Qt Namespace

Type Documentation

enum Qt::AlignmentFlag
flags Qt::Alignment

This enum type is used to describe alignment. It contains horizontal and vertical flags that can be combined to produce the required effect.

The TextElideMode enum can also be used in many situations to fine-tune the appearance of aligned text.

The horizontal flags are:

Constant	Value	Description
Qt::AlignLeft	0x0001	Aligns with the left edge.
Qt::AlignRight	0x0002	Aligns with the right edge.
Qt::AlignHCenter	0x0004	Centers horizontally in the available space.
Qt::AlignJustify	0x0008	Justifies the text in the available space.

The vertical flags are:

Constant	Value	Description
Qt::AlignTop	0x0020	Aligns with the top.
Qt::AlignBottom	0x0040	Aligns with the bottom.
Qt::AlignVCenter	0x0080	Centers vertically in the available space.

You can use only one of the horizontal flags at a time. There is one two-dimensional flag:

Constant	Value	Description
Qt::AlignCenter	AlignVCenter | AlignHCenter	Centers in both dimensions.

You can use at most one horizontal and one vertical flag at a time. Qt::AlignCenter counts as both horizontal and vertical.

Three enum values are useful in applications that can be run in right-to-left mode:

Constant	Value	Description
Qt::AlignAbsolute	0x0010	If the widget's layout direction is Qt::RightToLeft (instead of Qt::LeftToRight, the default), Qt::AlignLeft refers to the right edge and Qt::AlignRight to the left edge. This is normally the desired behavior. If you want Qt::AlignLeft to always mean "left" and Qt::AlignRight to always mean "right", combine the flag with Qt::AlignAbsolute.
Qt::AlignLeading	AlignLeft	Synonym for Qt::AlignLeft.
Qt::AlignTrailing	AlignRight	Synonym for Qt::AlignRight.

Masks:

Constant	Value
Qt::AlignHorizontal_Mask	AlignLeft | AlignRight | AlignHCenter | AlignJustify | AlignAbsolute
Qt::AlignVertical_Mask	AlignTop | AlignBottom | AlignVCenter

Conflicting combinations of flags have undefined meanings.

The Alignment type is a typedef for QFlags<AlignmentFlag>. It stores an OR combination of AlignmentFlag values.

enum Qt::AnchorAttribute

An anchor has one or more of the following attributes:

Constant	Value	Description
Qt::AnchorName	0	the name attribute of the anchor. This attribute is used when scrolling to an anchor in the document.
Qt::AnchorHref	1	the href attribute of the anchor. This attribute is used when a link is clicked to determine what content to load.

enum Qt::AnchorPoint

Specifies a side of a layout item that can be anchored. This is used by QGraphicsAnchorLayout.

Constant	Value	Description
Qt::AnchorLeft	0	The left side of a layout item.
Qt::AnchorHorizontalCenter	1	A "virtual" side that is centered between the left and the right side of a layout item.
Qt::AnchorRight	2	The right side of a layout item.
Qt::AnchorTop	3	The top side of a layout item.
Qt::AnchorVerticalCenter	4	A "virtual" side that is centered between the top and the bottom side of a layout item.
Qt::AnchorBottom	5	The bottom side of a layout item.

See also QGraphicsAnchorLayout.

enum Qt::ApplicationAttribute

This enum describes attributes that change the behavior of application-wide features. These are enabled and disabled using QCoreApplication::setAttribute(), and can be tested for with QCoreApplication::testAttribute().

Constant	Value	Description
Qt::AA_ImmediateWidgetCreation	0	Ensures that widgets are created as soon as they are constructed. By default, resources for widgets are allocated on demand to improve efficiency and minimize resource usage. Setting or clearing this attribute affects widgets constructed after the change. Setting it tells Qt to create toplevel windows immediately. Therefore, if it is important to minimize resource consumption, do not set this attribute.
Qt::AA_MSWindowsUseDirect3DByDefault	1	This value is obsolete and has no effect.
Qt::AA_DontShowIconsInMenus	2	Actions with the Icon property won't be shown in any menus unless specifically set by the QAction::iconVisibleInMenu property. Menus that are currently open or menus already created in the native Mac OS X menubar may not pick up a change in this attribute. Changes in the QAction::iconVisibleInMenu property will always be picked up.
Qt::AA_NativeWindows	3	Ensures that widgets have native windows.
Qt::AA_DontCreateNativeWidgetSiblings	4	Ensures that siblings of native widgets stay non-native unless specifically set by the Qt::WA_NativeWindow attribute.
Qt::AA_MacPluginApplication	5	Stops the Qt mac application from doing specific initializations that do not necessarily make sense when using Qt to author a plugin. This includes avoiding loading our nib for the main menu and not taking possession of the native menu bar. When setting this attribute to true will also set the AA_DontUseNativeMenuBar attribute to true.
Qt::AA_DontUseNativeMenuBar	6	All menubars created while this attribute is set to true won't be used as a native menubar (e.g, the menubar at the top of the main screen on Mac OS X or at the bottom in Windows CE).
Qt::AA_MacDontSwapCtrlAndMeta	7	On Mac OS X by default, Qt swaps the Control and Meta (Command) keys (i.e., whenever Control is pressed, Qt sends Meta, and whenever Meta is pressed Control is sent). When this attribute is true, Qt will not do the flip. QKeySequence::StandardShortcuts will also flip accordingly (i.e., QKeySequence::Copy will be Command+C on the keyboard regardless of the value set, though what is output for QKeySequence::toString(QKeySequence::PortableText) will be different).
Qt::AA_S60DontConstructApplicationPanes	8	Stops Qt from initializing the S60 status pane and softkey pane on Symbian. This is useful to save memory and reduce startup time for applications that will run in fullscreen mode during their whole lifetime. This attribute must be set before QApplication is constructed.
Qt::AA_S60DisablePartialScreenInputMode	9	By default in Symbian^3, a separate editing window is opened on top of an application. This is exactly like editing on previous versions of Symbian behave. When this attribute is false, a non-fullscreen virtual keyboard window is shown on top of application and it is ensured that the focused text input widget is visible. The auto-translation of input widget is only supported for applications based on QGraphicsView, but the non-fullscreen virtual keyboard will work for any kind of application (i.e. QWidgets-based). By default this attribute is true. This attribute must be set after QApplication is constructed. This is only supported in Symbian^3 and later Symbian releases.

enum Qt::ArrowType

Constant	Value
Qt::NoArrow	0
Qt::UpArrow	1
Qt::DownArrow	2
Qt::LeftArrow	3
Qt::RightArrow	4

enum Qt::AspectRatioMode

This enum type defines what happens to the aspect ratio when scaling an rectangle.

Constant	Value	Description
Qt::IgnoreAspectRatio	0	The size is scaled freely. The aspect ratio is not preserved.
Qt::KeepAspectRatio	1	The size is scaled to a rectangle as large as possible inside a given rectangle, preserving the aspect ratio.
Qt::KeepAspectRatioByExpanding	2	The size is scaled to a rectangle as small as possible outside a given rectangle, preserving the aspect ratio.

See also QSize::scale() and QImage::scaled().

enum Qt::Axis

This enum type defines three values to represent the three axes in the cartesian coordinate system.

Constant	Value	Description
Qt::XAxis	0	The X axis.
Qt::YAxis	1	The Y axis.
Qt::ZAxis	2	The Z axis.

See also QTransform::rotate() and QTransform::rotateRadians().

enum Qt::BGMode

Background mode:

Constant	Value
Qt::TransparentMode	0
Qt::OpaqueMode	1

enum Qt::BrushStyle

This enum type defines the brush styles supported by Qt, i.e. the fill pattern of shapes drawn using QPainter.

Constant	Value	Description
Qt::NoBrush	0	No brush pattern.
Qt::SolidPattern	1	Uniform color.
Qt::Dense1Pattern	2	Extremely dense brush pattern.
Qt::Dense2Pattern	3	Very dense brush pattern.
Qt::Dense3Pattern	4	Somewhat dense brush pattern.
Qt::Dense4Pattern	5	Half dense brush pattern.
Qt::Dense5Pattern	6	Somewhat sparse brush pattern.
Qt::Dense6Pattern	7	Very sparse brush pattern.
Qt::Dense7Pattern	8	Extremely sparse brush pattern.
Qt::HorPattern	9	Horizontal lines.
Qt::VerPattern	10	Vertical lines.
Qt::CrossPattern	11	Crossing horizontal and vertical lines.
Qt::BDiagPattern	12	Backward diagonal lines.
Qt::FDiagPattern	13	Forward diagonal lines.
Qt::DiagCrossPattern	14	Crossing diagonal lines.
Qt::LinearGradientPattern	15	Linear gradient (set using a dedicated QBrush constructor).
Qt::ConicalGradientPattern	17	Conical gradient (set using a dedicated QBrush constructor).
Qt::RadialGradientPattern	16	Radial gradient (set using a dedicated QBrush constructor).
Qt::TexturePattern	24	Custom pattern (see QBrush::setTexture()).

See also QBrush.

enum Qt::CaseSensitivity

Constant	Value
Qt::CaseInsensitive	0
Qt::CaseSensitive	1

enum Qt::CheckState

This enum describes the state of checkable items, controls, and widgets.

Constant	Value	Description
Qt::Unchecked	0	The item is unchecked.
Qt::PartiallyChecked	1	The item is partially checked. Items in hierarchical models may be partially checked if some, but not all, of their children are checked.
Qt::Checked	2	The item is checked.

See also QCheckBox, Qt::ItemFlags, and Qt::ItemDataRole.

enum Qt::ClipOperation

Constant	Value	Description
Qt::NoClip	0	This operation turns clipping off.
Qt::ReplaceClip	1	Replaces the current clip path/rect/region with the one supplied in the function call.
Qt::IntersectClip	2	Intersects the current clip path/rect/region with the one supplied in the function call.
Qt::UniteClip	3	Unites the current clip path/rect/region with the one supplied in the function call.

enum Qt::ConnectionType

This enum describes the types of connection that can be used between signals and slots. In particular, it determines whether a particular signal is delivered to a slot immediately or queued for delivery at a later time.

Constant	Value	Description
Qt::AutoConnection	0	(default) If the signal is emitted from a different thread than the receiving object, the signal is queued, behaving as Qt::QueuedConnection. Otherwise, the slot is invoked directly, behaving as Qt::DirectConnection. The type of connection is determined when the signal is emitted.
Qt::DirectConnection	1	The slot is invoked immediately, when the signal is emitted.
Qt::QueuedConnection	2	The slot is invoked when control returns to the event loop of the receiver's thread. The slot is executed in the receiver's thread.
Qt::BlockingQueuedConnection	4	Same as QueuedConnection, except the current thread blocks until the slot returns. This connection type should only be used where the emitter and receiver are in different threads. Note: Violating this rule can cause your application to deadlock.
Qt::UniqueConnection	0x80	Same as AutoConnection, but the connection is made only if it does not duplicate an existing connection. i.e., if the same signal is already connected to the same slot for the same pair of objects, then the connection will fail. This connection type was introduced in Qt 4.6.
Qt::AutoCompatConnection	3	The default type when Qt 3 support is enabled. Same as AutoConnection but will also cause warnings to be output in certain situations. See Compatibility Signals and Slots for further information.

With queued connections, the parameters must be of types that are known to Qt's meta-object system, because Qt needs to copy the arguments to store them in an event behind the scenes. If you try to use a queued connection and get the error message:

 QObject::connect: Cannot queue arguments of type 'MyType'

Call qRegisterMetaType() to register the data type before you establish the connection.

When using signals and slots with multiple threads, see Signals and Slots Across Threads.

See also Thread Support in Qt, QObject::connect(), and qRegisterMetaType().

enum Qt::ContextMenuPolicy

This enum type defines the various policies a widget can have with respect to showing a context menu.

Constant	Value	Description
Qt::NoContextMenu	0	the widget does not feature a context menu, context menu handling is deferred to the widget's parent.
Qt::PreventContextMenu	4	the widget does not feature a context menu, and in contrast to NoContextMenu, the handling is not deferred to the widget's parent. This means that all right mouse button events are guaranteed to be delivered to the widget itself through mousePressEvent(), and mouseReleaseEvent().
Qt::DefaultContextMenu	1	the widget's QWidget::contextMenuEvent() handler is called.
Qt::ActionsContextMenu	2	the widget displays its QWidget::actions() as context menu.
Qt::CustomContextMenu	3	the widget emits the QWidget::customContextMenuRequested() signal.

enum Qt::CoordinateSystem

This enum specifies the coordinate system.

Constant	Value	Description
Qt::DeviceCoordinates	0	Coordinates are relative to the upper-left corner of the object's paint device.
Qt::LogicalCoordinates	1	Coordinates are relative to the upper-left corner of the object.

This enum was introduced or modified in Qt 4.6.

enum Qt::Corner

This enum type specifies a corner in a rectangle:

Constant	Value	Description
Qt::TopLeftCorner	0x00000	The top-left corner of the rectangle.
Qt::TopRightCorner	0x00001	The top-right corner of the rectangle.
Qt::BottomLeftCorner	0x00002	The bottom-left corner of the rectangle.
Qt::BottomRightCorner	0x00003	The bottom-right corner of the rectangle.

enum Qt::CursorShape

This enum type defines the various cursors that can be used.

The standard arrow cursor is the default for widgets in a normal state.

Constant	Value	Description
Qt::ArrowCursor	0	The standard arrow cursor.
Qt::UpArrowCursor	1	An arrow pointing upwards toward the top of the screen.
Qt::CrossCursor	2	A crosshair cursor, typically used to help the user accurately select a point on the screen.
Qt::WaitCursor	3	An hourglass or watch cursor, usually shown during operations that prevent the user from interacting with the application.
Qt::IBeamCursor	4	A caret or ibeam cursor, indicating that a widget can accept and display text input.
Qt::SizeVerCursor	5	A cursor used for elements that are used to vertically resize top-level windows.
Qt::SizeHorCursor	6	A cursor used for elements that are used to horizontally resize top-level windows.
Qt::SizeBDiagCursor	7	A cursor used for elements that are used to diagonally resize top-level windows at their top-right and bottom-left corners.
Qt::SizeFDiagCursor	8	A cursor used for elements that are used to diagonally resize top-level windows at their top-left and bottom-right corners.
Qt::SizeAllCursor	9	A cursor used for elements that are used to resize top-level windows in any direction.
Qt::BlankCursor	10	A blank/invisible cursor, typically used when the cursor shape needs to be hidden.
Qt::SplitVCursor	11	A cursor used for vertical splitters, indicating that a handle can be dragged horizontally to adjust the use of available space.
Qt::SplitHCursor	12	A cursor used for horizontal splitters, indicating that a handle can be dragged vertically to adjust the use of available space.
Qt::PointingHandCursor	13	A pointing hand cursor that is typically used for clickable elements such as hyperlinks.
Qt::ForbiddenCursor	14	A slashed circle cursor, typically used during drag and drop operations to indicate that dragged content cannot be dropped on particular widgets or inside certain regions.
Qt::OpenHandCursor	17	A cursor representing an open hand, typically used to indicate that the area under the cursor is the visible part of a canvas that the user can click and drag in order to scroll around.
Qt::ClosedHandCursor	18	A cursor representing a closed hand, typically used to indicate that a dragging operation is in progress that involves scrolling.
Qt::WhatsThisCursor	15	An arrow with a question mark, typically used to indicate the presence of What's This? help for a widget.
Qt::BusyCursor	16	An hourglass or watch cursor, usually shown during operations that allow the user to interact with the application while they are performed in the background.
Qt::DragMoveCursor	20	A cursor that is usually used when dragging an item.
Qt::DragCopyCursor	19	A cursor that is usually used when dragging an item to copy it.
Qt::DragLinkCursor	21	A cursor that is usually used when dragging an item to make a link to it.
Qt::BitmapCursor	24

enum Qt::DateFormat

Constant	Value	Description
Qt::TextDate	0	The default Qt format, which includes the day and month name, the day number in the month, and the year in full. The day and month names will be short, localized names. This is basically equivalent to using the date format string, "ddd MMM d yyyy". See QDate::toString() for more information.
Qt::ISODate	1	ISO 8601 extended format: either YYYY-MM-DD for dates or YYYY-MM-DDTHH:MM:SS, YYYY-MM-DDTHH:MM:SSTZD (e.g., 1997-07-16T19:20:30+01:00) for combined dates and times.
Qt::SystemLocaleShortDate	?	The short format used by the operating system.
Qt::SystemLocaleLongDate	?	The long format used by the operating system.
Qt::DefaultLocaleShortDate	?	The short format specified by the application's locale.
Qt::DefaultLocaleLongDate	?	The long format used by the application's locale.
Qt::SystemLocaleDate	2	This enum value is deprecated. Use Qt::SystemLocaleShortDate instead (or Qt::SystemLocaleLongDate if you want long dates).
Qt::LocaleDate	?	This enum value is deprecated. Use Qt::DefaultLocaleShortDate instead (or Qt::DefaultLocaleLongDate if you want long dates).
Qt::LocalDate	SystemLocaleDate	This enum value is deprecated. Use Qt::SystemLocaleShortDate instead (or Qt::SystemLocaleLongDate if you want long dates).

Note: For ISODate formats, each Y, M and D represents a single digit of the year, month and day used to specify the date. Each H, M and S represents a single digit of the hour, minute and second used to specify the time. The presence of a literal T character is used to separate the date and time when both are specified.

enum Qt::DayOfWeek

Constant	Value
Qt::Monday	1
Qt::Tuesday	2
Qt::Wednesday	3
Qt::Thursday	4
Qt::Friday	5
Qt::Saturday	6
Qt::Sunday	7

enum Qt::DockWidgetArea
flags Qt::DockWidgetAreas

Constant	Value
Qt::LeftDockWidgetArea	0x1
Qt::RightDockWidgetArea	0x2
Qt::TopDockWidgetArea	0x4
Qt::BottomDockWidgetArea	0x8
Qt::AllDockWidgetAreas	DockWidgetArea_Mask
Qt::NoDockWidgetArea	0

The DockWidgetAreas type is a typedef for QFlags<DockWidgetArea>. It stores an OR combination of DockWidgetArea values.

enum Qt::DropAction
flags Qt::DropActions

Constant	Value	Description
Qt::CopyAction	0x1	Copy the data to the target.
Qt::MoveAction	0x2	Move the data from the source to the target.
Qt::LinkAction	0x4	Create a link from the source to the target.
Qt::ActionMask	0xff
Qt::IgnoreAction	0x0	Ignore the action (do nothing with the data).
Qt::TargetMoveAction	0x8002	On Windows, this value is used when the ownership of the D&D data should be taken over by the target application, i.e., the source application should not delete the data. On X11 this value is used to do a move. TargetMoveAction is not used on the Mac.

The DropActions type is a typedef for QFlags<DropAction>. It stores an OR combination of DropAction values.

enum Qt::EventPriority

This enum can be used to specify event priorities.

Constant	Value	Description
Qt::HighEventPriority	1	Events with this priority are sent before events with NormalEventPriority or LowEventPriority.
Qt::NormalEventPriority	0	Events with this priority are sent after events with HighEventPriority, but before events with LowEventPriority.
Qt::LowEventPriority	-1	Events with this priority are sent after events with HighEventPriority or NormalEventPriority.

Note that these values are provided purely for convenience, since event priorities can be any value between INT_MAX and INT_MIN, inclusive. For example, you can define custom priorities as being relative to each other:

 enum CustomEventPriority
 {
     // An important event
     ImportantEventPriority = Qt::HighEventPriority,

     // A more important event
     MoreImportantEventPriority = ImportantEventPriority + 1,

     // A critical event
     CriticalEventPriority = 100 * MoreImportantEventPriority,

     // Not that important
     StatusEventPriority = Qt::LowEventPriority,

     // These are less important than Status events
     IdleProcessingDoneEventPriority = StatusEventPriority - 1
 };

See also QCoreApplication::postEvent().

enum Qt::FillRule

Specifies which method should be used to fill the paths and polygons.

Constant	Value	Description
Qt::OddEvenFill	0	Specifies that the region is filled using the odd even fill rule. With this rule, we determine whether a point is inside the shape by using the following method. Draw a horizontal line from the point to a location outside the shape, and count the number of intersections. If the number of intersections is an odd number, the point is inside the shape. This mode is the default.
Qt::WindingFill	1	Specifies that the region is filled using the non zero winding rule. With this rule, we determine whether a point is inside the shape by using the following method. Draw a horizontal line from the point to a location outside the shape. Determine whether the direction of the line at each intersection point is up or down. The winding number is determined by summing the direction of each intersection. If the number is non zero, the point is inside the shape. This fill mode can also in most cases be considered as the intersection of closed shapes.

enum Qt::FocusPolicy

This enum type defines the various policies a widget can have with respect to acquiring keyboard focus.

Constant	Value	Description
Qt::TabFocus	0x1	the widget accepts focus by tabbing.
Qt::ClickFocus	0x2	the widget accepts focus by clicking.
Qt::StrongFocus	TabFocus | ClickFocus | 0x8	the widget accepts focus by both tabbing and clicking. On Mac OS X this will also be indicate that the widget accepts tab focus when in 'Text/List focus mode'.
Qt::WheelFocus	StrongFocus | 0x4	like Qt::StrongFocus plus the widget accepts focus by using the mouse wheel.
Qt::NoFocus	0	the widget does not accept focus.

enum Qt::FocusReason

This enum specifies why the focus changed. It will be passed through QWidget::setFocus and can be retrieved in the QFocusEvent sent to the widget upon focus change.

Constant	Value	Description
Qt::MouseFocusReason	0	A mouse action occurred.
Qt::TabFocusReason	1	The Tab key was pressed.
Qt::BacktabFocusReason	2	A Backtab occurred. The input for this may include the Shift or Control keys; e.g. Shift+Tab.
Qt::ActiveWindowFocusReason	3	The window system made this window either active or inactive.
Qt::PopupFocusReason	4	The application opened/closed a pop-up that grabbed/released the keyboard focus.
Qt::ShortcutFocusReason	5	The user typed a label's buddy shortcut
Qt::MenuBarFocusReason	6	The menu bar took focus.
Qt::OtherFocusReason	7	Another reason, usually application-specific.

See also Keyboard Focus.

enum Qt::GestureFlag
flags Qt::GestureFlags

This enum type describes additional flags that can be used when subscribing to a gesture.

Constant	Value	Description
Qt::DontStartGestureOnChildren	0x01	By default gestures can start on the widget or over any of its children. Use this flag to disable this and allow a gesture to start on the widget only.
Qt::ReceivePartialGestures	0x02	Allows any ignored gesture events to be propagated to parent widgets which have specified this hint. By default only gestures that are in the Qt::GestureStarted state are propagated and the widget always gets the full gesture sequence starting with a gesture in the Qt::GestureStarted state and ending with a gesture in the Qt::GestureFinished or Qt::GestureCanceled states.
Qt::IgnoredGesturesPropagateToParent	0x04	Since Qt 4.7, this flag allows you to fine-tune gesture event propagation. By setting the flag when grabbing a gesture all ignored partial gestures will propagate to their parent items.

This enum was introduced or modified in Qt 4.6.

The GestureFlags type is a typedef for QFlags<GestureFlag>. It stores an OR combination of GestureFlag values.

See also QWidget::grabGesture() and QGraphicsObject::grabGesture().

enum Qt::GestureState

This enum type describes the state of a gesture.

Constant	Value	Description
Qt::GestureStarted	1	A continuous gesture has started.
Qt::GestureUpdated	2	A gesture continues.
Qt::GestureFinished	3	A gesture has finished.
Qt::GestureCanceled	4	A gesture was canceled.

This enum was introduced or modified in Qt 4.6.

See also QGesture.

enum Qt::GestureType

This enum type describes the standard gestures.

Constant	Value	Description
Qt::TapGesture	1	A Tap gesture.
Qt::TapAndHoldGesture	2	A Tap-And-Hold (Long-Tap) gesture.
Qt::PanGesture	3	A Pan gesture.
Qt::PinchGesture	4	A Pinch gesture.
Qt::SwipeGesture	5	A Swipe gesture.
Qt::CustomGesture	0x0100	A flag that can be used to test if the gesture is a user-defined gesture ID.

User-defined gestures are registered with the QGestureRecognizer::registerRecognizer() function which generates a custom gesture ID with the Qt::CustomGesture flag set.

This enum was introduced or modified in Qt 4.6.

See also QGesture, QWidget::grabGesture(), and QGraphicsObject::grabGesture().

enum Qt::GlobalColor

Qt's predefined QColor objects:

Constant	Value	Description
Qt::white	3	White (#ffffff)
Qt::black	2	Black (#000000)
Qt::red	7	Red (#ff0000)
Qt::darkRed	13	Dark red (#800000)
Qt::green	8	Green (#00ff00)
Qt::darkGreen	14	Dark green (#008000)
Qt::blue	9	Blue (#0000ff)
Qt::darkBlue	15	Dark blue (#000080)
Qt::cyan	10	Cyan (#00ffff)
Qt::darkCyan	16	Dark cyan (#008080)
Qt::magenta	11	Magenta (#ff00ff)
Qt::darkMagenta	17	Dark magenta (#800080)
Qt::yellow	12	Yellow (#ffff00)
Qt::darkYellow	18	Dark yellow (#808000)
Qt::gray	5	Gray (#a0a0a4)
Qt::darkGray	4	Dark gray (#808080)
Qt::lightGray	6	Light gray (#c0c0c0)
Qt::transparent	19	a transparent black value (i.e., QColor(0, 0, 0, 0))
Qt::color0	0	0 pixel value (for bitmaps)
Qt::color1	1	1 pixel value (for bitmaps)

See also QColor.

typedef Qt::HANDLE

Platform-specific handle type for system objects. This is equivalent to void * on Mac OS X and embedded Linux, and to unsigned long on X11. On Windows it is the DWORD returned by the Win32 function getCurrentThreadId().

Warning: Using this type is not portable.

enum Qt::HitTestAccuracy

This enum contains the types of accuracy that can be used by the QTextDocument class when testing for mouse clicks on text documents.

Constant	Value	Description
Qt::ExactHit	0	The point at which input occurred must coincide exactly with input-sensitive parts of the document.
Qt::FuzzyHit	1	The point at which input occurred can lie close to input-sensitive parts of the document.

This enum is defined in the <QTextDocument> header file.

enum Qt::ImageConversionFlag
flags Qt::ImageConversionFlags

The options marked "(default)" are set if no other values from the list are included (since the defaults are zero):

Color/Mono preference (ignored for QBitmap):

Constant	Value	Description
Qt::AutoColor	0x00000000	(default) - If the image has depth 1 and contains only black and white pixels, the pixmap becomes monochrome.
Qt::ColorOnly	0x00000003	The pixmap is dithered/converted to the native display depth.
Qt::MonoOnly	0x00000002	The pixmap becomes monochrome. If necessary, it is dithered using the chosen dithering algorithm.

Dithering mode preference for RGB channels:

Constant	Value	Description
Qt::DiffuseDither	0x00000000	(default) - A high-quality dither.
Qt::OrderedDither	0x00000010	A faster, more ordered dither.
Qt::ThresholdDither	0x00000020	No dithering; closest color is used.

Dithering mode preference for alpha channel:

Constant	Value	Description
Qt::ThresholdAlphaDither	0x00000000	(default) - No dithering.
Qt::OrderedAlphaDither	0x00000004	A faster, more ordered dither.
Qt::DiffuseAlphaDither	0x00000008	A high-quality dither.

Color matching versus dithering preference:

Constant	Value	Description
Qt::PreferDither	0x00000040	(default when converting to a pixmap) - Always dither 32-bit images when the image is converted to 8 bits.
Qt::AvoidDither	0x00000080	(default when converting for the purpose of saving to file) - Dither 32-bit images only if the image has more than 256 colors and it is being converted to 8 bits.
Qt::NoOpaqueDetection	0x00000100	Do not check whether the image contains non-opaque pixels. Use this if you know that the image is semi-transparent and you want to avoid the overhead of checking the pixels in the image until a non-opaque pixel is found, or if you want the pixmap to retain an alpha channel for some other reason. If the image has no alpha channel this flag has no effect.

Don't do any format conversions on the image. Can be useful when converting a QImage to a QPixmap for a one-time rendering operation for example.

The ImageConversionFlags type is a typedef for QFlags<ImageConversionFlag>. It stores an OR combination of ImageConversionFlag values.

enum Qt::InputMethodHint
flags Qt::InputMethodHints

Constant	Value	Description
Qt::ImhNone	0x0	No hints.

Flags that alter the behavior:

Constant	Value	Description
Qt::ImhHiddenText	0x1	Characters should be hidden, as is typically used when entering passwords. This is automatically set when setting QLineEdit::echoMode to Password.
Qt::ImhNoAutoUppercase	0x2	The input method should not try to automatically switch to upper case when a sentence ends.
Qt::ImhPreferNumbers	0x4	Numbers are preferred (but not required).
Qt::ImhPreferUppercase	0x8	Upper case letters are preferred (but not required).
Qt::ImhPreferLowercase	0x10	Lower case letters are preferred (but not required).
Qt::ImhNoPredictiveText	0x20	Do not use predictive text (i.e. dictionary lookup) while typing.

Flags that restrict input (exclusive flags):

Constant	Value	Description
Qt::ImhDigitsOnly	0x10000	Only digits are allowed.
Qt::ImhFormattedNumbersOnly	0x20000	Only number input is allowed. This includes decimal point and minus sign.
Qt::ImhUppercaseOnly	0x40000	Only upper case letter input is allowed.
Qt::ImhLowercaseOnly	0x80000	Only lower case letter input is allowed.
Qt::ImhDialableCharactersOnly	0x100000	Only characters suitable for phone dialling are allowed.
Qt::ImhEmailCharactersOnly	0x200000	Only characters suitable for email addresses are allowed.
Qt::ImhUrlCharactersOnly	0x400000	Only characters suitable for URLs are allowed.

Masks:

Constant	Value	Description
Qt::ImhExclusiveInputMask	0xffff0000	This mask yields nonzero if any of the exclusive flags are used.

Note: If several exclusive flags are ORed together, the resulting character set will consist of the union of the specified sets. For instance specifying ImhNumbersOnly and ImhUppercaseOnly would yield a set consisting of numbers and uppercase letters.

The InputMethodHints type is a typedef for QFlags<InputMethodHint>. It stores an OR combination of InputMethodHint values.

See also QGraphicsItem::inputMethodHints().

enum Qt::InputMethodQuery

Constant	Value	Description
Qt::ImMicroFocus	0	The rectangle covering the area of the input cursor in widget coordinates.
Qt::ImFont	1	The currently used font for text input.
Qt::ImCursorPosition	2	The logical position of the cursor within the text surrounding the input area (see ImSurroundingText).
Qt::ImSurroundingText	3	The plain text around the input area, for example the current paragraph.
Qt::ImCurrentSelection	4	The currently selected text.
Qt::ImMaximumTextLength	5	The maximum number of characters that the widget can hold. If there is no limit, QVariant() is returned.
Qt::ImAnchorPosition	6	The position of the selection anchor. This may be less or greater than ImCursorPosition, depending on which side of selection the cursor is. If there is no selection, it returns the same as ImCursorPosition.

enum Qt::ItemDataRole

Each item in the model has a set of data elements associated with it, each with its own role. The roles are used by the view to indicate to the model which type of data it needs. Custom models should return data in these types.

The general purpose roles (and the associated types) are:

Constant	Value	Description
Qt::DisplayRole	0	The key data to be rendered in the form of text. (QString)
Qt::DecorationRole	1	The data to be rendered as a decoration in the form of an icon. (QColor, QIcon or QPixmap)
Qt::EditRole	2	The data in a form suitable for editing in an editor. (QString)
Qt::ToolTipRole	3	The data displayed in the item's tooltip. (QString)
Qt::StatusTipRole	4	The data displayed in the status bar. (QString)
Qt::WhatsThisRole	5	The data displayed for the item in "What's This?" mode. (QString)
Qt::SizeHintRole	13	The size hint for the item that will be supplied to views. (QSize)

Roles describing appearance and meta data (with associated types):

Constant	Value	Description
Qt::FontRole	6	The font used for items rendered with the default delegate. (QFont)
Qt::TextAlignmentRole	7	The alignment of the text for items rendered with the default delegate. (Qt::AlignmentFlag)
Qt::BackgroundRole	8	The background brush used for items rendered with the default delegate. (QBrush)
Qt::BackgroundColorRole	8	This role is obsolete. Use BackgroundRole instead.
Qt::ForegroundRole	9	The foreground brush (text color, typically) used for items rendered with the default delegate. (QBrush)
Qt::TextColorRole	9	This role is obsolete. Use ForegroundRole instead.
Qt::CheckStateRole	10	This role is used to obtain the checked state of an item. (Qt::CheckState)

Accessibility roles (with associated types):

Constant	Value	Description
Qt::AccessibleTextRole	11	The text to be used by accessibility extensions and plugins, such as screen readers. (QString)
Qt::AccessibleDescriptionRole	12	A description of the item for accessibility purposes. (QString)

User roles:

Constant	Value	Description
Qt::UserRole	32	The first role that can be used for application-specific purposes.

For user roles, it is up to the developer to decide which types to use and ensure that components use the correct types when accessing and setting data.

enum Qt::ItemFlag
flags Qt::ItemFlags

This enum describes the properties of an item:

Constant	Value	Description
Qt::NoItemFlags	0	It does not have any properties set.
Qt::ItemIsSelectable	1	It can be selected.
Qt::ItemIsEditable	2	It can be edited.
Qt::ItemIsDragEnabled	4	It can be dragged.
Qt::ItemIsDropEnabled	8	It can be used as a drop target.
Qt::ItemIsUserCheckable	16	It can be checked or unchecked by the user.
Qt::ItemIsEnabled	32	The user can interact with the item.
Qt::ItemIsTristate	64	The item is checkable with three separate states.

Note that checkable items need to be given both a suitable set of flags and an initial state, indicating whether the item is checked or not. This is handled automatically for model/view components, but needs to be explicitly set for instances of QListWidgetItem, QTableWidgetItem, and QTreeWidgetItem.

The ItemFlags type is a typedef for QFlags<ItemFlag>. It stores an OR combination of ItemFlag values.

See also QAbstractItemModel.

enum Qt::ItemSelectionMode

This enum is used in QGraphicsItem, QGraphicsScene and QGraphicsView to specify how items are selected, or how to determine if a shapes and items collide.

Constant	Value	Description
Qt::ContainsItemShape	0x0	The output list contains only items whose shape is fully contained inside the selection area. Items that intersect with the area's outline are not included.
Qt::IntersectsItemShape	0x1	The output list contains both items whose shape is fully contained inside the selection area, and items that intersect with the area's outline. This is a common mode for rubber band selection.
Qt::ContainsItemBoundingRect	0x2	The output list contains only items whose bounding rectangle is fully contained inside the selection area. Items that intersect with the area's outline are not included.
Qt::IntersectsItemBoundingRect	0x3	The output list contains both items whose bounding rectangle is fully contained inside the selection area, and items that intersect with the area's outline. This method is commonly used for determining areas that need redrawing.

See also QGraphicsScene::items(), QGraphicsScene::collidingItems(), QGraphicsView::items(), QGraphicsItem::collidesWithItem(), and QGraphicsItem::collidesWithPath().

enum Qt::Key

The key names used by Qt.

Constant	Value	Description
Qt::Key_Escape	0x01000000
Qt::Key_Tab	0x01000001
Qt::Key_Backtab	0x01000002
Qt::Key_Backspace	0x01000003
Qt::Key_Return	0x01000004
Qt::Key_Enter	0x01000005	Typically located on the keypad.
Qt::Key_Insert	0x01000006
Qt::Key_Delete	0x01000007
Qt::Key_Pause	0x01000008	The Pause/Break key (Note: Not anything to do with pausing media)
Qt::Key_Print	0x01000009
Qt::Key_SysReq	0x0100000a
Qt::Key_Clear	0x0100000b
Qt::Key_Home	0x01000010
Qt::Key_End	0x01000011
Qt::Key_Left	0x01000012
Qt::Key_Up	0x01000013
Qt::Key_Right	0x01000014
Qt::Key_Down	0x01000015
Qt::Key_PageUp	0x01000016
Qt::Key_PageDown	0x01000017
Qt::Key_Shift	0x01000020
Qt::Key_Control	0x01000021	On Mac OS X, this corresponds to the Command keys.
Qt::Key_Meta	0x01000022	On Mac OS X, this corresponds to the Control keys. On Windows keyboards, this key is mapped to the Windows key.
Qt::Key_Alt	0x01000023
Qt::Key_AltGr	0x01001103	On Windows, when the KeyDown event for this key is sent, the Ctrl+Alt modifiers are also set.
Qt::Key_CapsLock	0x01000024
Qt::Key_NumLock	0x01000025
Qt::Key_ScrollLock	0x01000026
Qt::Key_F1	0x01000030
Qt::Key_F2	0x01000031
Qt::Key_F3	0x01000032
Qt::Key_F4	0x01000033
Qt::Key_F5	0x01000034
Qt::Key_F6	0x01000035
Qt::Key_F7	0x01000036
Qt::Key_F8	0x01000037
Qt::Key_F9	0x01000038
Qt::Key_F10	0x01000039
Qt::Key_F11	0x0100003a
Qt::Key_F12	0x0100003b
Qt::Key_F13	0x0100003c
Qt::Key_F14	0x0100003d
Qt::Key_F15	0x0100003e
Qt::Key_F16	0x0100003f
Qt::Key_F17	0x01000040
Qt::Key_F18	0x01000041
Qt::Key_F19	0x01000042
Qt::Key_F20	0x01000043
Qt::Key_F21	0x01000044
Qt::Key_F22	0x01000045
Qt::Key_F23	0x01000046
Qt::Key_F24	0x01000047
Qt::Key_F25	0x01000048
Qt::Key_F26	0x01000049
Qt::Key_F27	0x0100004a
Qt::Key_F28	0x0100004b
Qt::Key_F29	0x0100004c
Qt::Key_F30	0x0100004d
Qt::Key_F31	0x0100004e
Qt::Key_F32	0x0100004f
Qt::Key_F33	0x01000050
Qt::Key_F34	0x01000051
Qt::Key_F35	0x01000052
Qt::Key_Super_L	0x01000053
Qt::Key_Super_R	0x01000054
Qt::Key_Menu	0x01000055
Qt::Key_Hyper_L	0x01000056
Qt::Key_Hyper_R	0x01000057
Qt::Key_Help	0x01000058
Qt::Key_Direction_L	0x01000059
Qt::Key_Direction_R	0x01000060
Qt::Key_Space	0x20
Qt::Key_Any	Key_Space
Qt::Key_Exclam	0x21
Qt::Key_QuoteDbl	0x22
Qt::Key_NumberSign	0x23
Qt::Key_Dollar	0x24
Qt::Key_Percent	0x25
Qt::Key_Ampersand	0x26
Qt::Key_Apostrophe	0x27
Qt::Key_ParenLeft	0x28
Qt::Key_ParenRight	0x29
Qt::Key_Asterisk	0x2a
Qt::Key_Plus	0x2b
Qt::Key_Comma	0x2c
Qt::Key_Minus	0x2d
Qt::Key_Period	0x2e
Qt::Key_Slash	0x2f
Qt::Key_0	0x30
Qt::Key_1	0x31
Qt::Key_2	0x32
Qt::Key_3	0x33
Qt::Key_4	0x34
Qt::Key_5	0x35
Qt::Key_6	0x36
Qt::Key_7	0x37
Qt::Key_8	0x38
Qt::Key_9	0x39
Qt::Key_Colon	0x3a
Qt::Key_Semicolon	0x3b
Qt::Key_Less	0x3c
Qt::Key_Equal	0x3d
Qt::Key_Greater	0x3e
Qt::Key_Question	0x3f
Qt::Key_At	0x40
Qt::Key_A	0x41
Qt::Key_B	0x42
Qt::Key_C	0x43
Qt::Key_D	0x44
Qt::Key_E	0x45
Qt::Key_F	0x46
Qt::Key_G	0x47
Qt::Key_H	0x48
Qt::Key_I	0x49
Qt::Key_J	0x4a
Qt::Key_K	0x4b
Qt::Key_L	0x4c
Qt::Key_M	0x4d
Qt::Key_N	0x4e
Qt::Key_O	0x4f
Qt::Key_P	0x50
Qt::Key_Q	0x51
Qt::Key_R	0x52
Qt::Key_S	0x53
Qt::Key_T	0x54
Qt::Key_U	0x55
Qt::Key_V	0x56
Qt::Key_W	0x57
Qt::Key_X	0x58
Qt::Key_Y	0x59
Qt::Key_Z	0x5a
Qt::Key_BracketLeft	0x5b
Qt::Key_Backslash	0x5c
Qt::Key_BracketRight	0x5d
Qt::Key_AsciiCircum	0x5e
Qt::Key_Underscore	0x5f
Qt::Key_QuoteLeft	0x60
Qt::Key_BraceLeft	0x7b
Qt::Key_Bar	0x7c
Qt::Key_BraceRight	0x7d
Qt::Key_AsciiTilde	0x7e
Qt::Key_nobreakspace	0x0a0
Qt::Key_exclamdown	0x0a1
Qt::Key_cent	0x0a2
Qt::Key_sterling	0x0a3
Qt::Key_currency	0x0a4
Qt::Key_yen	0x0a5
Qt::Key_brokenbar	0x0a6
Qt::Key_section	0x0a7
Qt::Key_diaeresis	0x0a8
Qt::Key_copyright	0x0a9
Qt::Key_ordfeminine	0x0aa
Qt::Key_guillemotleft	0x0ab
Qt::Key_notsign	0x0ac
Qt::Key_hyphen	0x0ad
Qt::Key_registered	0x0ae
Qt::Key_macron	0x0af
Qt::Key_degree	0x0b0
Qt::Key_plusminus	0x0b1
Qt::Key_twosuperior	0x0b2
Qt::Key_threesuperior	0x0b3
Qt::Key_acute	0x0b4
Qt::Key_mu	0x0b5
Qt::Key_paragraph	0x0b6
Qt::Key_periodcentered	0x0b7
Qt::Key_cedilla	0x0b8
Qt::Key_onesuperior	0x0b9
Qt::Key_masculine	0x0ba
Qt::Key_guillemotright	0x0bb
Qt::Key_onequarter	0x0bc
Qt::Key_onehalf	0x0bd
Qt::Key_threequarters	0x0be
Qt::Key_questiondown	0x0bf
Qt::Key_Agrave	0x0c0
Qt::Key_Aacute	0x0c1
Qt::Key_Acircumflex	0x0c2
Qt::Key_Atilde	0x0c3
Qt::Key_Adiaeresis	0x0c4
Qt::Key_Aring	0x0c5
Qt::Key_AE	0x0c6
Qt::Key_Ccedilla	0x0c7
Qt::Key_Egrave	0x0c8
Qt::Key_Eacute	0x0c9
Qt::Key_Ecircumflex	0x0ca
Qt::Key_Ediaeresis	0x0cb
Qt::Key_Igrave	0x0cc
Qt::Key_Iacute	0x0cd
Qt::Key_Icircumflex	0x0ce
Qt::Key_Idiaeresis	0x0cf
Qt::Key_ETH	0x0d0
Qt::Key_Ntilde	0x0d1
Qt::Key_Ograve	0x0d2
Qt::Key_Oacute	0x0d3
Qt::Key_Ocircumflex	0x0d4
Qt::Key_Otilde	0x0d5
Qt::Key_Odiaeresis	0x0d6
Qt::Key_multiply	0x0d7
Qt::Key_Ooblique	0x0d8
Qt::Key_Ugrave	0x0d9
Qt::Key_Uacute	0x0da
Qt::Key_Ucircumflex	0x0db
Qt::Key_Udiaeresis	0x0dc
Qt::Key_Yacute	0x0dd
Qt::Key_THORN	0x0de
Qt::Key_ssharp	0x0df
Qt::Key_division	0x0f7
Qt::Key_ydiaeresis	0x0ff
Qt::Key_Multi_key	0x01001120
Qt::Key_Codeinput	0x01001137
Qt::Key_SingleCandidate	0x0100113c
Qt::Key_MultipleCandidate	0x0100113d
Qt::Key_PreviousCandidate	0x0100113e
Qt::Key_Mode_switch	0x0100117e
Qt::Key_Kanji	0x01001121
Qt::Key_Muhenkan	0x01001122
Qt::Key_Henkan	0x01001123
Qt::Key_Romaji	0x01001124
Qt::Key_Hiragana	0x01001125
Qt::Key_Katakana	0x01001126
Qt::Key_Hiragana_Katakana	0x01001127
Qt::Key_Zenkaku	0x01001128
Qt::Key_Hankaku	0x01001129
Qt::Key_Zenkaku_Hankaku	0x0100112a
Qt::Key_Touroku	0x0100112b
Qt::Key_Massyo	0x0100112c
Qt::Key_Kana_Lock	0x0100112d
Qt::Key_Kana_Shift	0x0100112e
Qt::Key_Eisu_Shift	0x0100112f
Qt::Key_Eisu_toggle	0x01001130
Qt::Key_Hangul	0x01001131
Qt::Key_Hangul_Start	0x01001132
Qt::Key_Hangul_End	0x01001133
Qt::Key_Hangul_Hanja	0x01001134
Qt::Key_Hangul_Jamo	0x01001135
Qt::Key_Hangul_Romaja	0x01001136
Qt::Key_Hangul_Jeonja	0x01001138
Qt::Key_Hangul_Banja	0x01001139
Qt::Key_Hangul_PreHanja	0x0100113a
Qt::Key_Hangul_PostHanja	0x0100113b
Qt::Key_Hangul_Special	0x0100113f
Qt::Key_Dead_Grave	0x01001250
Qt::Key_Dead_Acute	0x01001251
Qt::Key_Dead_Circumflex	0x01001252
Qt::Key_Dead_Tilde	0x01001253
Qt::Key_Dead_Macron	0x01001254
Qt::Key_Dead_Breve	0x01001255
Qt::Key_Dead_Abovedot	0x01001256
Qt::Key_Dead_Diaeresis	0x01001257
Qt::Key_Dead_Abovering	0x01001258
Qt::Key_Dead_Doubleacute	0x01001259
Qt::Key_Dead_Caron	0x0100125a
Qt::Key_Dead_Cedilla	0x0100125b
Qt::Key_Dead_Ogonek	0x0100125c
Qt::Key_Dead_Iota	0x0100125d
Qt::Key_Dead_Voiced_Sound	0x0100125e
Qt::Key_Dead_Semivoiced_Sound	0x0100125f
Qt::Key_Dead_Belowdot	0x01001260
Qt::Key_Dead_Hook	0x01001261
Qt::Key_Dead_Horn	0x01001262
Qt::Key_Back	0x01000061
Qt::Key_Forward	0x01000062
Qt::Key_Stop	0x01000063
Qt::Key_Refresh	0x01000064
Qt::Key_VolumeDown	0x01000070
Qt::Key_VolumeMute	0x01000071
Qt::Key_VolumeUp	0x01000072
Qt::Key_BassBoost	0x01000073
Qt::Key_BassUp	0x01000074
Qt::Key_BassDown	0x01000075
Qt::Key_TrebleUp	0x01000076
Qt::Key_TrebleDown	0x01000077
Qt::Key_MediaPlay	0x01000080	A key setting the state of the media player to play
Qt::Key_MediaStop	0x01000081	A key setting the state of the media player to stop
Qt::Key_MediaPrevious	0x01000082
Qt::Key_MediaNext	0x01000083
Qt::Key_MediaRecord	0x01000084
Qt::Key_MediaPause	0x1000085	A key setting the state of the media player to pause (Note: not the pause/break key)
Qt::Key_MediaTogglePlayPause	0x1000086	A key to toggle the play/pause state in the media player (rather than setting an absolute state)
Qt::Key_HomePage	0x01000090
Qt::Key_Favorites	0x01000091
Qt::Key_Search	0x01000092
Qt::Key_Standby	0x01000093
Qt::Key_OpenUrl	0x01000094
Qt::Key_LaunchMail	0x010000a0
Qt::Key_LaunchMedia	0x010000a1
Qt::Key_Launch0	0x010000a2	On X11 this key is mapped to "My Computer" (XF86XK_MyComputer) key for legacy reasons.
Qt::Key_Launch1	0x010000a3	On X11 this key is mapped to "Calculator" (XF86XK_Calculator) key for legacy reasons.
Qt::Key_Launch2	0x010000a4	On X11 this key is mapped to XF86XK_Launch0 key for legacy reasons.
Qt::Key_Launch3	0x010000a5	On X11 this key is mapped to XF86XK_Launch1 key for legacy reasons.
Qt::Key_Launch4	0x010000a6	On X11 this key is mapped to XF86XK_Launch2 key for legacy reasons.
Qt::Key_Launch5	0x010000a7	On X11 this key is mapped to XF86XK_Launch3 key for legacy reasons.
Qt::Key_Launch6	0x010000a8	On X11 this key is mapped to XF86XK_Launch4 key for legacy reasons.
Qt::Key_Launch7	0x010000a9	On X11 this key is mapped to XF86XK_Launch5 key for legacy reasons.
Qt::Key_Launch8	0x010000aa	On X11 this key is mapped to XF86XK_Launch6 key for legacy reasons.
Qt::Key_Launch9	0x010000ab	On X11 this key is mapped to XF86XK_Launch7 key for legacy reasons.
Qt::Key_LaunchA	0x010000ac	On X11 this key is mapped to XF86XK_Launch8 key for legacy reasons.
Qt::Key_LaunchB	0x010000ad	On X11 this key is mapped to XF86XK_Launch9 key for legacy reasons.
Qt::Key_LaunchC	0x010000ae	On X11 this key is mapped to XF86XK_LaunchA key for legacy reasons.
Qt::Key_LaunchD	0x010000af	On X11 this key is mapped to XF86XK_LaunchB key for legacy reasons.
Qt::Key_LaunchE	0x010000b0	On X11 this key is mapped to XF86XK_LaunchC key for legacy reasons.
Qt::Key_LaunchF	0x010000b1	On X11 this key is mapped to XF86XK_LaunchD key for legacy reasons.
Qt::Key_LaunchG	0x0100010e	On X11 this key is mapped to XF86XK_LaunchE key for legacy reasons.
Qt::Key_LaunchH	0x0100010f	On X11 this key is mapped to XF86XK_LaunchF key for legacy reasons.
Qt::Key_MonBrightnessUp	0x010000b2
Qt::Key_MonBrightnessDown	0x010000b3
Qt::Key_KeyboardLightOnOff	0x010000b4
Qt::Key_KeyboardBrightnessUp	0x010000b5
Qt::Key_KeyboardBrightnessDown	0x010000b6
Qt::Key_PowerOff	0x010000b7
Qt::Key_WakeUp	0x010000b8
Qt::Key_Eject	0x010000b9
Qt::Key_ScreenSaver	0x010000ba
Qt::Key_WWW	0x010000bb
Qt::Key_Memo	0x010000bc
Qt::Key_LightBulb	0x010000bd
Qt::Key_Shop	0x010000be
Qt::Key_History	0x010000bf
Qt::Key_AddFavorite	0x010000c0
Qt::Key_HotLinks	0x010000c1
Qt::Key_BrightnessAdjust	0x010000c2
Qt::Key_Finance	0x010000c3
Qt::Key_Community	0x010000c4
Qt::Key_AudioRewind	0x010000c5
Qt::Key_BackForward	0x010000c6
Qt::Key_ApplicationLeft	0x010000c7
Qt::Key_ApplicationRight	0x010000c8
Qt::Key_Book	0x010000c9
Qt::Key_CD	0x010000ca
Qt::Key_Calculator	0x010000cb	On X11 this key is not mapped for legacy reasons. Use Qt::Key_Launch1 instead.
Qt::Key_ToDoList	0x010000cc
Qt::Key_ClearGrab	0x010000cd
Qt::Key_Close	0x010000ce
Qt::Key_Copy	0x010000cf
Qt::Key_Cut	0x010000d0
Qt::Key_Display	0x010000d1
Qt::Key_DOS	0x010000d2
Qt::Key_Documents	0x010000d3
Qt::Key_Excel	0x010000d4
Qt::Key_Explorer	0x010000d5
Qt::Key_Game	0x010000d6
Qt::Key_Go	0x010000d7
Qt::Key_iTouch	0x010000d8
Qt::Key_LogOff	0x010000d9
Qt::Key_Market	0x010000da
Qt::Key_Meeting	0x010000db
Qt::Key_MenuKB	0x010000dc
Qt::Key_MenuPB	0x010000dd
Qt::Key_MySites	0x010000de
Qt::Key_News	0x010000df
Qt::Key_OfficeHome	0x010000e0
Qt::Key_Option	0x010000e1
Qt::Key_Paste	0x010000e2
Qt::Key_Phone	0x010000e3
Qt::Key_Calendar	0x010000e4
Qt::Key_Reply	0x010000e5
Qt::Key_Reload	0x010000e6
Qt::Key_RotateWindows	0x010000e7
Qt::Key_RotationPB	0x010000e8
Qt::Key_RotationKB	0x010000e9
Qt::Key_Save	0x010000ea
Qt::Key_Send	0x010000eb
Qt::Key_Spell	0x010000ec
Qt::Key_SplitScreen	0x010000ed
Qt::Key_Support	0x010000ee
Qt::Key_TaskPane	0x010000ef
Qt::Key_Terminal	0x010000f0
Qt::Key_Tools	0x010000f1
Qt::Key_Travel	0x010000f2
Qt::Key_Video	0x010000f3
Qt::Key_Word	0x010000f4
Qt::Key_Xfer	0x010000f5
Qt::Key_ZoomIn	0x010000f6
Qt::Key_ZoomOut	0x010000f7
Qt::Key_Away	0x010000f8
Qt::Key_Messenger	0x010000f9
Qt::Key_WebCam	0x010000fa
Qt::Key_MailForward	0x010000fb
Qt::Key_Pictures	0x010000fc
Qt::Key_Music	0x010000fd
Qt::Key_Battery	0x010000fe
Qt::Key_Bluetooth	0x010000ff
Qt::Key_WLAN	0x01000100
Qt::Key_UWB	0x01000101
Qt::Key_AudioForward	0x01000102
Qt::Key_AudioRepeat	0x01000103
Qt::Key_AudioRandomPlay	0x01000104
Qt::Key_Subtitle	0x01000105
Qt::Key_AudioCycleTrack	0x01000106
Qt::Key_Time	0x01000107
Qt::Key_Hibernate	0x01000108
Qt::Key_View	0x01000109
Qt::Key_TopMenu	0x0100010a
Qt::Key_PowerDown	0x0100010b
Qt::Key_Suspend	0x0100010c
Qt::Key_ContrastAdjust	0x0100010d
Qt::Key_MediaLast	0x0100ffff
Qt::Key_unknown	0x01ffffff
Qt::Key_Call	0x01100004	A key to answer or initiate a call (see Qt::Key_ToggleCallHangup for a key to toggle current call state)
Qt::Key_Camera	0x01100020	A key to activate the camera shutter
Qt::Key_CameraFocus	0x01100021	A key to focus the camera
Qt::Key_Context1	0x01100000
Qt::Key_Context2	0x01100001
Qt::Key_Context3	0x01100002
Qt::Key_Context4	0x01100003
Qt::Key_Flip	0x01100006
Qt::Key_Hangup	0x01100005	A key to end an ongoing call (see Qt::Key_ToggleCallHangup for a key to toggle current call state)
Qt::Key_No	0x01010002
Qt::Key_Select	0x01010000
Qt::Key_Yes	0x01010001
Qt::Key_ToggleCallHangup	0x01100007	A key to toggle the current call state (ie. either answer, or hangup) depending on current call state
Qt::Key_VoiceDial	0x01100008
Qt::Key_LastNumberRedial	0x01100009
Qt::Key_Execute	0x01020003
Qt::Key_Printer	0x01020002
Qt::Key_Play	0x01020005
Qt::Key_Sleep	0x01020004
Qt::Key_Zoom	0x01020006
Qt::Key_Cancel	0x01020001

See also QKeyEvent::key().

enum Qt::KeyboardModifier
flags Qt::KeyboardModifiers

This enum describes the modifier keys.

Constant	Value	Description
Qt::NoModifier	0x00000000	No modifier key is pressed.
Qt::ShiftModifier	0x02000000	A Shift key on the keyboard is pressed.
Qt::ControlModifier	0x04000000	A Ctrl key on the keyboard is pressed.
Qt::AltModifier	0x08000000	An Alt key on the keyboard is pressed.
Qt::MetaModifier	0x10000000	A Meta key on the keyboard is pressed.
Qt::KeypadModifier	0x20000000	A keypad button is pressed.
Qt::GroupSwitchModifier	0x40000000	X11 only. A Mode_switch key on the keyboard is pressed.

Note: On Mac OS X, the ControlModifier value corresponds to the Command keys on the Macintosh keyboard, and the MetaModifier value corresponds to the Control keys. The KeypadModifier value will also be set when an arrow key is pressed as the arrow keys are considered part of the keypad.

Note: On Windows Keyboards, Qt::MetaModifier and Qt::Key_Meta are mapped to the Windows key.

The KeyboardModifiers type is a typedef for QFlags<KeyboardModifier>. It stores an OR combination of KeyboardModifier values.

See also MouseButton and Modifier.

enum Qt::LayoutDirection

Specifies the direction of Qt's layouts and text handling.

Constant	Value	Description
Qt::LeftToRight	0	Left-to-right layout.
Qt::RightToLeft	1	Right-to-left layout.
Qt::LayoutDirectionAuto	2	Automatic layout.

Right-to-left layouts are necessary for certain languages, notably Arabic and Hebrew.

LayoutDirectionAuto serves two purposes. When used in conjunction with widgets and layouts, it will imply to use the layout direction set on the parent widget or QApplication. This has the same effect as QWidget::unsetLayoutDirection().

When LayoutDirectionAuto is used in conjunction with text layouting, it will imply that the text directionality is determined from the content of the string to be layouted.

See also QApplication::setLayoutDirection(), QWidget::setLayoutDirection(), QTextOption::setTextDirection(), and QString::isRightToLeft().

enum Qt::MaskMode

This enum specifies the behavior of the QPixmap::createMaskFromColor() and QImage::createMaskFromColor() functions.

Constant	Value	Description
Qt::MaskInColor	0	Creates a mask where all pixels matching the given color are opaque.
Qt::MaskOutColor	1	Creates a mask where all pixels matching the given color are transparent.

enum Qt::MatchFlag
flags Qt::MatchFlags

This enum describes the type of matches that can be used when searching for items in a model.

Constant	Value	Description
Qt::MatchExactly	0	Performs QVariant-based matching.
Qt::MatchFixedString	8	Performs string-based matching. String-based comparisons are case-insensitive unless the MatchCaseSensitive flag is also specified.
Qt::MatchContains	1	The search term is contained in the item.
Qt::MatchStartsWith	2	The search term matches the start of the item.
Qt::MatchEndsWith	3	The search term matches the end of the item.
Qt::MatchCaseSensitive	16	The search is case sensitive.
Qt::MatchRegExp	4	Performs string-based matching using a regular expression as the search term.
Qt::MatchWildcard	5	Performs string-based matching using a string with wildcards as the search term.
Qt::MatchWrap	32	Perform a search that wraps around, so that when the search reaches the last item in the model, it begins again at the first item and continues until all items have been examined.
Qt::MatchRecursive	64	Searches the entire hierarchy.

The MatchFlags type is a typedef for QFlags<MatchFlag>. It stores an OR combination of MatchFlag values.

See also QString::compare() and QRegExp.

enum Qt::Modifier

This enum provides shorter names for the keyboard modifier keys supported by Qt.

Note: On Mac OS X, the CTRL value corresponds to the Command keys on the Macintosh keyboard, and the META value corresponds to the Control keys.

Constant	Value	Description
Qt::SHIFT	Qt::ShiftModifier	The Shift keys provided on all standard keyboards.
Qt::META	Qt::MetaModifier	The Meta keys.
Qt::CTRL	Qt::ControlModifier	The Ctrl keys.
Qt::ALT	Qt::AltModifier	The normal Alt keys, but not keys like AltGr.
Qt::UNICODE_ACCEL	0x00000000	The shortcut is specified as a Unicode code point, not as a Qt Key.

See also KeyboardModifier and MouseButton.

enum Qt::MouseButton
flags Qt::MouseButtons

This enum type describes the different mouse buttons.

Constant	Value	Description
Qt::NoButton	0x00000000	The button state does not refer to any button (see QMouseEvent::button()).
Qt::LeftButton	0x00000001	The left button is pressed, or an event refers to the left button. (The left button may be the right button on left-handed mice.)
Qt::RightButton	0x00000002	The right button.
Qt::MidButton	0x00000004	The middle button.
Qt::MiddleButton	MidButton	The middle button.
Qt::XButton1	0x00000008	The first X button.
Qt::XButton2	0x00000010	The second X button.

The MouseButtons type is a typedef for QFlags<MouseButton>. It stores an OR combination of MouseButton values.

See also KeyboardModifier and Modifier.

enum Qt::NavigationMode

This enum type describes the mode for moving focus.

Constant	Value	Description
Qt::NavigationModeNone	0	Only the touch screen is used.
Qt::NavigationModeKeypadTabOrder	1	Qt::Key_Up and Qt::Key_Down are used to change focus.
Qt::NavigationModeKeypadDirectional	2	Qt::Key_Up, Qt::Key_Down, Qt::Key_Left and Qt::Key_Right are used to change focus.
Qt::NavigationModeCursorAuto	3	The mouse cursor is used to change focus, it is displayed only on non touchscreen devices. The keypad is used to implement a virtual cursor, unless the device has an analog mouse type of input device (e.g. touchpad). This is the recommended setting for an application such as a web browser that needs pointer control on both touch and non-touch devices.
Qt::NavigationModeCursorForceVisible	4	The mouse cursor is used to change focus, it is displayed regardless of device type. The keypad is used to implement a virtual cursor, unless the device has an analog mouse type of input device (e.g. touchpad)

Note:: in 4.6, cursor navigation is only implemented for Symbian OS. On other platforms, it behaves as NavigationModeNone.

This enum was introduced or modified in Qt 4.6.

See also QApplication::setNavigationMode() and QApplication::navigationMode().

enum Qt::Orientation
flags Qt::Orientations

This type is used to signify an object's orientation.

Constant	Value
Qt::Horizontal	0x1
Qt::Vertical	0x2

Orientation is used with QScrollBar for example.

The Orientations type is a typedef for QFlags<Orientation>. It stores an OR combination of Orientation values.

enum Qt::PenCapStyle

This enum type defines the pen cap styles supported by Qt, i.e. the line end caps that can be drawn using QPainter.

Qt::SquareCap	Qt::FlatCap	Qt::RoundCap

Constant	Value	Description
Qt::FlatCap	0x00	a square line end that does not cover the end point of the line.
Qt::SquareCap	0x10	a square line end that covers the end point and extends beyond it by half the line width.
Qt::RoundCap	0x20	a rounded line end.

See also QPen.

enum Qt::PenJoinStyle

This enum type defines the pen join styles supported by Qt, i.e. which joins between two connected lines can be drawn using QPainter.

Qt::BevelJoin	Qt::MiterJoin	Qt::RoundJoin

Constant	Value	Description
Qt::MiterJoin	0x00	The outer edges of the lines are extended to meet at an angle, and this area is filled.
Qt::BevelJoin	0x40	The triangular notch between the two lines is filled.
Qt::RoundJoin	0x80	A circular arc between the two lines is filled.
Qt::SvgMiterJoin	0x100	A miter join corresponding to the definition of a miter join in the SVG 1.2 Tiny specification.

See also QPen.

enum Qt::PenStyle

This enum type defines the pen styles that can be drawn using QPainter. The styles are:

Qt::SolidLine	Qt::DashLine	Qt::DotLine
Qt::DashDotLine	Qt::DashDotDotLine	Qt::CustomDashLine

Constant	Value	Description
Qt::NoPen	0	no line at all. For example, QPainter::drawRect() fills but does not draw any boundary line.
Qt::SolidLine	1	A plain line.
Qt::DashLine	2	Dashes separated by a few pixels.
Qt::DotLine	3	Dots separated by a few pixels.
Qt::DashDotLine	4	Alternate dots and dashes.
Qt::DashDotDotLine	5	One dash, two dots, one dash, two dots.
Qt::CustomDashLine	6	A custom pattern defined using QPainterPathStroker::setDashPattern().

See also QPen.

enum Qt::ScrollBarPolicy

This enum type describes the various modes of QAbstractScrollArea's scroll bars.

Constant	Value	Description
Qt::ScrollBarAsNeeded	0	QAbstractScrollArea shows a scroll bar when the content is too large to fit and not otherwise. This is the default.
Qt::ScrollBarAlwaysOff	1	QAbstractScrollArea never shows a scroll bar.
Qt::ScrollBarAlwaysOn	2	QAbstractScrollArea always shows a scroll bar.

(The modes for the horizontal and vertical scroll bars are independent.)

enum Qt::ShortcutContext

For a QEvent::Shortcut event to occur, the shortcut's key sequence must be entered by the user in a context where the shortcut is active. The possible contexts are these:

Constant	Value	Description
Qt::WidgetShortcut	0	The shortcut is active when its parent widget has focus.
Qt::WidgetWithChildrenShortcut	3	The shortcut is active when its parent widget, or any of its children has focus. Children which are top-level widgets, except pop-ups, are not affected by this shortcut context.
Qt::WindowShortcut	1	The shortcut is active when its parent widget is a logical subwidget of the active top-level window.
Qt::ApplicationShortcut	2	The shortcut is active when one of the applications windows are active.

enum Qt::SizeHint

This enum is used by QGraphicsLayoutItem::sizeHint()

Constant	Value	Description
Qt::MinimumSize	0	is used to specify the minimum size of a graphics layout item.
Qt::PreferredSize	1	is used to specify the preferred size of a graphics layout item.
Qt::MaximumSize	2	is used to specify the maximum size of a graphics layout item.
Qt::MinimumDescent	3	is used to specify the minimum descent of a text string in a graphics layout item.

This enum was introduced or modified in Qt 4.4.

See also QGraphicsLayoutItem::sizeHint().

enum Qt::SizeMode

This enum is used by QPainter::drawRoundedRect() and QPainterPath::addRoundedRect() functions to specify the radii of rectangle corners with respect to the dimensions of the bounding rectangles specified.

Constant	Value	Description
Qt::AbsoluteSize	0	Specifies the size using absolute measurements.
Qt::RelativeSize	1	Specifies the size relative to the bounding rectangle, typically using percentage measurements.

This enum was introduced or modified in Qt 4.4.

enum Qt::SortOrder

This enum describes how the items in a widget are sorted.

Constant	Value	Description
Qt::AscendingOrder	0	The items are sorted ascending e.g. starts with 'AAA' ends with 'ZZZ' in Latin-1 locales
Qt::DescendingOrder	1	The items are sorted descending e.g. starts with 'ZZZ' ends with 'AAA' in Latin-1 locales

enum Qt::TextElideMode

This enum specifies where the ellipsis should appear when displaying texts that don't fit:

Constant	Value	Description
Qt::ElideLeft	0	The ellipsis should appear at the beginning of the text.
Qt::ElideRight	1	The ellipsis should appear at the end of the text.
Qt::ElideMiddle	2	The ellipsis should appear in the middle of the text.
Qt::ElideNone	3	Ellipsis should NOT appear in the text.

Qt::ElideMiddle is normally the most appropriate choice for URLs (e.g., "http://bugreports.qt.../QTWEBSITE-13/"), whereas Qt::ElideRight is appropriate for other strings (e.g., "Deploying Applications on Ma...").

See also QAbstractItemView::textElideMode, QFontMetrics::elidedText(), AlignmentFlag, and QTabBar::elideMode.

enum Qt::TextFlag

This enum type is used to define some modifier flags. Some of these flags only make sense in the context of printing:

Constant	Value	Description
Qt::TextSingleLine	0x0100	Treats all whitespace as spaces and prints just one line.
Qt::TextDontClip	0x0200	If it's impossible to stay within the given bounds, it prints outside.
Qt::TextExpandTabs	0x0400	Makes the U+0009 (ASCII tab) character move to the next tab stop.
Qt::TextShowMnemonic	0x0800	Displays the string "&P" as P (see QButton for an example). For an ampersand, use "&&".
Qt::TextWordWrap	0x1000	Breaks lines at appropriate points, e.g. at word boundaries.
Qt::TextWrapAnywhere	0x2000	Breaks lines anywhere, even within words.
Qt::TextHideMnemonic	0x8000	Same as Qt::TextShowMnemonic but doesn't draw the underlines.
Qt::TextDontPrint	0x4000	Treat this text as "hidden" and don't print it.
Qt::IncludeTrailingSpaces	TextIncludeTrailingSpaces	When this option is set, QTextLine::naturalTextWidth() and naturalTextRect() will return a value that includes the width of trailing spaces in the text; otherwise this width is excluded.
Qt::TextIncludeTrailingSpaces	0x08000000	Same as IncludeTrailingSpaces
Qt::TextJustificationForced	0x10000	Ensures that text lines are justified.

Ensures that the longest variant is always used when computing the size of a multi-variant string. (Internal)

You can use as many modifier flags as you want, except that Qt::TextSingleLine and Qt::TextWordWrap cannot be combined.

Flags that are inappropriate for a given use are generally ignored.

enum Qt::TextFormat

This enum is used in widgets that can display both plain text and rich text, e.g. QLabel. It is used for deciding whether a text string should be interpreted as one or the other. This is normally done by passing one of the enum values to a setTextFormat() function.

Constant	Value	Description
Qt::PlainText	0	The text string is interpreted as a plain text string.
Qt::RichText	1	The text string is interpreted as a rich text string.
Qt::AutoText	2	The text string is interpreted as for Qt::RichText if Qt::mightBeRichText() returns true, otherwise as Qt::PlainText.
Qt::LogText	3	A special, limited text format which is only used by Q3TextEdit in an optimized mode.

enum Qt::TextInteractionFlag
flags Qt::TextInteractionFlags

This enum specifies how a text displaying widget reacts to user input.

Constant	Value	Description
Qt::NoTextInteraction	0	No interaction with the text is possible.
Qt::TextSelectableByMouse	1	Text can be selected with the mouse and copied to the clipboard using a context menu or standard keyboard shortcuts.
Qt::TextSelectableByKeyboard	2	Text can be selected with the cursor keys on the keyboard. A text cursor is shown.
Qt::LinksAccessibleByMouse	4	Links can be highlighted and activated with the mouse.
Qt::LinksAccessibleByKeyboard	8	Links can be focused using tab and activated with enter.
Qt::TextEditable	16	The text is fully editable.
Qt::TextEditorInteraction	TextSelectableByMouse | TextSelectableByKeyboard | TextEditable	The default for a text editor.
Qt::TextBrowserInteraction	TextSelectableByMouse | LinksAccessibleByMouse | LinksAccessibleByKeyboard	The default for QTextBrowser.

The TextInteractionFlags type is a typedef for QFlags<TextInteractionFlag>. It stores an OR combination of TextInteractionFlag values.

enum Qt::TileRule

This enum describes how to repeat or stretch the parts of an image when drawing.

Constant	Value	Description
Qt::StretchTile	0	Scale the image to fit to the available area.
Qt::RepeatTile	1	Repeat the image until there is no more space. May crop the last image.
Qt::RoundTile	2	Similar to Repeat, but scales the image down to ensure that the last tile is not cropped.

This enum was introduced or modified in Qt 4.6.

enum Qt::TimeSpec

Constant	Value	Description
Qt::LocalTime	0	Locale dependent time (Timezones and Daylight Savings Time).
Qt::UTC	1	Coordinated Universal Time, replaces Greenwich Mean Time.
Qt::OffsetFromUTC	2	An offset in seconds from Coordinated Universal Time.

enum Qt::ToolBarArea
flags Qt::ToolBarAreas

Constant	Value
Qt::LeftToolBarArea	0x1
Qt::RightToolBarArea	0x2
Qt::TopToolBarArea	0x4
Qt::BottomToolBarArea	0x8
Qt::AllToolBarAreas	ToolBarArea_Mask
Qt::NoToolBarArea	0

The ToolBarAreas type is a typedef for QFlags<ToolBarArea>. It stores an OR combination of ToolBarArea values.

enum Qt::ToolButtonStyle

The style of the tool button, describing how the button's text and icon should be displayed.

Constant	Value	Description
Qt::ToolButtonIconOnly	0	Only display the icon.
Qt::ToolButtonTextOnly	1	Only display the text.
Qt::ToolButtonTextBesideIcon	2	The text appears beside the icon.
Qt::ToolButtonTextUnderIcon	3	The text appears under the icon.
Qt::ToolButtonFollowStyle	4	Follow the style.

enum Qt::TouchPointState
flags Qt::TouchPointStates

This enum represents the state of a touch point at the time the QTouchEvent occurred.

Constant	Value	Description
Qt::TouchPointPressed	0x01	The touch point is now pressed.
Qt::TouchPointMoved	0x02	The touch point moved.
Qt::TouchPointStationary	0x04	The touch point did not move.
Qt::TouchPointReleased	0x08	The touch point was released.

This enum was introduced or modified in Qt 4.6.

The TouchPointStates type is a typedef for QFlags<TouchPointState>. It stores an OR combination of TouchPointState values.

enum Qt::TransformationMode

This enum type defines whether image transformations (e.g., scaling) should be smooth or not.

Constant	Value	Description
Qt::FastTransformation	0	The transformation is performed quickly, with no smoothing.
Qt::SmoothTransformation	1	The resulting image is transformed using bilinear filtering.

See also QImage::scaled().

enum Qt::UIEffect

This enum describes the available UI effects.

By default, Qt will try to use the platform specific desktop settings for each effect. Use the QApplication::setDesktopSettingsAware() function (passing false as argument) to prevent this, and the QApplication::setEffectEnabled() to enable or disable a particular effect.

Note that all effects are disabled on screens running at less than 16-bit color depth.

Constant	Value	Description
Qt::UI_AnimateMenu	1	Show animated menus.
Qt::UI_FadeMenu	2	Show faded menus.
Qt::UI_AnimateCombo	3	Show animated comboboxes.
Qt::UI_AnimateTooltip	4	Show tooltip animations.
Qt::UI_FadeTooltip	5	Show tooltip fading effects.
Qt::UI_AnimateToolBox	6	Reserved

See also QApplication::setEffectEnabled() and QApplication::setDesktopSettingsAware().

typedef Qt::WFlags

Synonym for Qt::WindowFlags.

enum Qt::WhiteSpaceMode

This enum describes the types of whitespace mode that are used by the QTextDocument class to meet the requirements of different kinds of textual information.

Constant	Value	Description
Qt::WhiteSpaceNormal	0	The whitespace mode used to display normal word wrapped text in paragraphs.
Qt::WhiteSpacePre	1	A preformatted text mode in which whitespace is reproduced exactly.
Qt::WhiteSpaceNoWrap	2

This enum is defined in the <QTextDocument> header file.

enum Qt::WidgetAttribute

This enum type is used to specify various widget attributes. Attributes are set and cleared with QWidget::setAttribute(), and queried with QWidget::testAttribute(), although some have special convenience functions which are mentioned below.

Constant	Value	Description
Qt::WA_AcceptDrops	78	Allows data from drag and drop operations to be dropped onto the widget (see QWidget::setAcceptDrops()).
Qt::WA_AlwaysShowToolTips	84	Enables tooltips for inactive windows.
Qt::WA_ContentsPropagated	3	This flag is superfluous and obsolete; it no longer has any effect. Since Qt 4.1, all widgets that do not set WA_PaintOnScreen propagate their contents.
Qt::WA_CustomWhatsThis	47	Indicates that the widget wants to continue operating normally in "What's This?" mode. This is set by the widget's author.
Qt::WA_DeleteOnClose	55	Makes Qt delete this widget when the widget has accepted the close event (see QWidget::closeEvent()).
Qt::WA_Disabled	0	Indicates that the widget is disabled, i.e. it does not receive any mouse or keyboard events. There is also a getter functions QWidget::isEnabled(). This is set/cleared by the Qt kernel.
Qt::WA_DontShowOnScreen	103	Indicates that the widget is hidden or is not a part of the viewable Desktop.
Qt::WA_ForceDisabled	32	Indicates that the widget is explicitly disabled, i.e. it will remain disabled even when all its ancestors are set to the enabled state. This implies WA_Disabled. This is set/cleared by QWidget::setEnabled() and QWidget::setDisabled().
Qt::WA_ForceUpdatesDisabled	59	Indicates that updates are explicitly disabled for the widget; i.e. it will remain disabled even when all its ancestors are set to the updates-enabled state. This implies WA_UpdatesDisabled. This is set/cleared by QWidget::setUpdatesEnabled().
Qt::WA_GroupLeader	72	This attribute has been deprecated. Use QWidget::windowModality instead.
Qt::WA_Hover	74	Forces Qt to generate paint events when the mouse enters or leaves the widget. This feature is typically used when implementing custom styles; see the Styles example for details.
Qt::WA_InputMethodEnabled	14	Enables input methods for Asian languages. Must be set when creating custom text editing widgets. On Windows CE and Symbian this flag can be used in addition to QApplication::autoSipEnabled to automatically display the SIP when entering a widget.
Qt::WA_KeyboardFocusChange	77	Set on a toplevel window when the users changes focus with the keyboard (tab, backtab, or shortcut).
Qt::WA_KeyCompression	33	Enables key event compression if set, and disables it if not set. By default key compression is off, so widgets receive one key press event for each key press (or more, since autorepeat is usually on). If you turn it on and your program doesn't keep up with key input, Qt may try to compress key events so that more than one character can be processed in each event. For example, a word processor widget might receive 2, 3 or more characters in each QKeyEvent::text(), if the layout recalculation takes too long for the CPU. If a widget supports multiple character unicode input, it is always safe to turn the compression on. Qt performs key event compression only for printable characters. Qt::Modifier keys, cursor movement keys, function keys and miscellaneous action keys (e.g. Escape, Enter, Backspace, PrintScreen) will stop key event compression, even if there are more compressible key events available. Platforms other than Mac and X11 do not support this compression, in which case turning it on will have no effect. This is set/cleared by the widget's author.
Qt::WA_LayoutOnEntireRect	48	Indicates that the widget wants QLayout to operate on the entire QWidget::rect(), not only on QWidget::contentsRect(). This is set by the widget's author.
Qt::WA_LayoutUsesWidgetRect	92	Ignore the layout item rect from the style when laying out this widget with QLayout. This makes a difference in QMacStyle and QPlastiqueStyle for some widgets.
Qt::WA_MacNoClickThrough	12	When a widget that has this attribute set is clicked, and its window is inactive, the click will make the window active but won't be seen by the widget. Typical use of this attribute is on widgets with "destructive" actions, such as a "Delete" button. WA_MacNoClickThrough also applies to all child widgets of the widget that has it set.
Qt::WA_MacOpaqueSizeGrip	85	Indicates that the native Carbon size grip should be opaque instead of transparent (the default). This attribute is only applicable to Mac OS X and is set by the widget's author.
Qt::WA_MacShowFocusRect	88	Indicates that this widget should get a QFocusFrame around it. Some widgets draw their own focus halo regardless of this attribute. Not that the QWidget::focusPolicy also plays the main role in whether something is given focus or not, this only controls whether or not this gets the focus frame. This attribute is only applicable to Mac OS X.
Qt::WA_MacNormalSize	89	Indicates the widget should have the normal size for widgets in Mac OS X. This attribute is only applicable to Mac OS X.
Qt::WA_MacSmallSize	90	Indicates the widget should have the small size for widgets in Mac OS X. This attribute is only applicable to Mac OS X.
Qt::WA_MacMiniSize	91	Indicates the widget should have the mini size for widgets in Mac OS X. This attribute is only applicable to Mac OS X.
Qt::WA_MacVariableSize	102	Indicates the widget can choose between alternative sizes for widgets to avoid clipping. This attribute is only applicable to Mac OS X.
Qt::WA_MacBrushedMetal	46	Indicates the widget should be drawn in the brushed metal style as supported by the windowing system. This attribute is only applicable to Mac OS X.
Qt::WA_Mapped	11	Indicates that the widget is mapped on screen. This is set/cleared by the Qt kernel.
Qt::WA_MouseNoMask	71	Makes the widget receive mouse events for the entire widget regardless of the currently set mask, overriding QWidget::setMask(). This is not applicable for top-level windows.
Qt::WA_MouseTracking	2	Indicates that the widget has mouse tracking enabled. See QWidget::mouseTracking.
Qt::WA_Moved	43	Indicates that the widget has an explicit position. This is set/cleared by QWidget::move() and by QWidget::setGeometry().
Qt::WA_MSWindowsUseDirect3D	94	This value is obsolete and has no effect.
Qt::WA_NoBackground	WA_OpaquePaintEvent	This value is obsolete. Use WA_OpaquePaintEvent instead.
Qt::WA_NoChildEventsForParent	58	Indicates that the widget does not want ChildAdded or ChildRemoved events sent to its parent. This is rarely necessary but can help to avoid automatic insertion widgets like splitters and layouts. This is set by a widget's author.
Qt::WA_NoChildEventsFromChildren	39	Indicates that the widget does not want to receive ChildAdded or ChildRemoved events sent from its children. This is set by a widget's author.
Qt::WA_NoMouseReplay	54	Used for pop-up widgets. Indicates that the most recent mouse press event should not be replayed when the pop-up widget closes. The flag is set by the widget's author and cleared by the Qt kernel every time the widget receives a new mouse event.
Qt::WA_NoMousePropagation	73	Prohibits mouse events from being propagated to the widget's parent. This attribute is disabled by default.
Qt::WA_TransparentForMouseEvents	51	When enabled, this attribute disables the delivery of mouse events to the widget and its children. Mouse events are delivered to other widgets as if the widget and its children were not present in the widget hierarchy; mouse clicks and other events effectively "pass through" them. This attribute is disabled by default.
Qt::WA_NoSystemBackground	9	Indicates that the widget has no background, i.e. when the widget receives paint events, the background is not automatically repainted. Note: Unlike WA_OpaquePaintEvent, newly exposed areas are never filled with the background (e.g., after showing a window for the first time the user can see "through" it until the application processes the paint events). This flag is set or cleared by the widget's author.
Qt::WA_OpaquePaintEvent	4	Indicates that the widget paints all its pixels when it receives a paint event. Thus, it is not required for operations like updating, resizing, scrolling and focus changes to erase the widget before generating paint events. The use of WA_OpaquePaintEvent provides a small optimization by helping to reduce flicker on systems that do not support double buffering and avoiding computational cycles necessary to erase the background prior to painting. Note: Unlike WA_NoSystemBackground, WA_OpaquePaintEvent makes an effort to avoid transparent window backgrounds. This flag is set or cleared by the widget's author.
Qt::WA_OutsideWSRange	49	Indicates that the widget is outside the valid range of the window system's coordinate system. A widget outside the valid range cannot be mapped on screen. This is set/cleared by the Qt kernel.
Qt::WA_PaintOnScreen	8	Indicates that the widget wants to draw directly onto the screen. Widgets with this attribute set do not participate in composition management, i.e. they cannot be semi-transparent or shine through semi-transparent overlapping widgets. Note: This flag is only supported on X11 and it disables double buffering. On Qt for Embedded Linux, the flag only works when set on a top-level widget and it relies on support from the active screen driver. This flag is set or cleared by the widget's author. To render outside of Qt's paint system, e.g., if you require native painting primitives, you need to reimplement QWidget::paintEngine() to return 0 and set this flag.
Qt::WA_PaintOutsidePaintEvent	13	Makes it possible to use QPainter to paint on the widget outside paintEvent(). This flag is not supported on Windows, Mac OS X or Embedded Linux. We recommend that you use it only when porting Qt 3 code to Qt 4.
Qt::WA_PaintUnclipped	52	Makes all painters operating on this widget unclipped. Children of this widget or other widgets in front of it do not clip the area the painter can paint on. This flag is only supported for widgets with the WA_PaintOnScreen flag set. The preferred way to do this in a cross platform way is to create a transparent widget that lies in front of the other widgets.
Qt::WA_PendingMoveEvent	34	Indicates that a move event is pending, e.g., when a hidden widget was moved. This flag is set or cleared by the Qt kernel.
Qt::WA_PendingResizeEvent	35	Indicates that a resize event is pending, e.g., when a hidden widget was resized. This flag is set or cleared by the Qt kernel.
Qt::WA_QuitOnClose	76	Makes Qt quit the application when the last widget with the attribute set has accepted closeEvent(). This behavior can be modified with the QApplication::quitOnLastWindowClosed property. By default this attribute is set for all widgets of type Qt::Window.
Qt::WA_Resized	42	Indicates that the widget has an explicit size. This flag is set or cleared by QWidget::resize() and QWidget::setGeometry().
Qt::WA_RightToLeft	56	Indicates that the layout direction for the widget is right to left.
Qt::WA_SetCursor	38	Indicates that the widget has a cursor of its own. This flag is set or cleared by QWidget::setCursor() and QWidget::unsetCursor().
Qt::WA_SetFont	37	Indicates that the widget has a font of its own. This flag is set or cleared by QWidget::setFont().
Qt::WA_SetPalette	36	Indicates that the widget has a palette of its own. This flag is set or cleared by QWidget::setPalette().
Qt::WA_SetStyle	86	Indicates that the widget has a style of its own. This flag is set or cleared by QWidget::setStyle().
Qt::WA_ShowModal	70	This attribute has been deprecated. Use QWidget::windowModality instead.
Qt::WA_StaticContents	5	Indicates that the widget contents are north-west aligned and static. On resize, such a widget will receive paint events only for parts of itself that are newly visible. This flag is set or cleared by the widget's author.
Qt::WA_StyleSheet	97	Indicates that the widget is styled using a style sheet.
Qt::WA_TranslucentBackground	120	Indicates that the widget should have a translucent background, i.e., any non-opaque regions of the widgets will be translucent because the widget will have an alpha channel. Setting this flag causes WA_NoSystemBackground to be set. On Windows the widget also needs the Qt::FramelessWindowHint window flag to be set. This flag is set or cleared by the widget's author.
Qt::WA_UnderMouse	1	Indicates that the widget is under the mouse cursor. The value is not updated correctly during drag and drop operations. There is also a getter function, QWidget::underMouse(). This flag is set or cleared by the Qt kernel.
Qt::WA_UpdatesDisabled	10	Indicates that updates are blocked (including the system background). This flag is set or cleared by the Qt kernel.

Warning: This flag must never be set or cleared by the widget's author.

Constant	Value	Description
Qt::WA_WindowModified	41	Indicates that the window is marked as modified. On some platforms this flag will do nothing, on others (including Mac OS X and Windows) the window will take a modified appearance. This flag is set or cleared by QWidget::setWindowModified().
Qt::WA_WindowPropagation	80	Makes a toplevel window inherit font and palette from its parent.
Qt::WA_MacAlwaysShowToolWindow	96	On Mac OS X, show the tool window even when the application is not active. By default, all tool windows are hidden when the application is inactive.
Qt::WA_SetLocale	87	Indicates the locale should be taken into consideration in the widget.
Qt::WA_StyledBackground	93	Indicates the widget should be drawn using a styled background.
Qt::WA_ShowWithoutActivating	98	Show the widget without making it active.
Qt::WA_NativeWindow	100	Indicates that a native window is created for the widget. Enabling this flag will also force a native window for the widget's ancestors unless Qt::WA_DontCreateNativeAncestors is set.
Qt::WA_DontCreateNativeAncestors	101	Indicates that the widget's ancestors are kept non-native even though the widget itself is native.
Qt::WA_X11NetWmWindowTypeDesktop	104	Adds _NET_WM_WINDOW_TYPE_DESKTOP to the window's _NET_WM_WINDOW_TYPE X11 window property. See http://standards.freedesktop.org/wm-spec/ for more details. This attribute has no effect on non-X11 platforms.
Qt::WA_X11NetWmWindowTypeDock	105	Adds _NET_WM_WINDOW_TYPE_DOCK to the window's _NET_WM_WINDOW_TYPE X11 window property. See http://standards.freedesktop.org/wm-spec/ for more details. This attribute has no effect on non-X11 platforms.
Qt::WA_X11NetWmWindowTypeToolBar	106	Adds _NET_WM_WINDOW_TYPE_TOOLBAR to the window's _NET_WM_WINDOW_TYPE X11 window property. See http://standards.freedesktop.org/wm-spec/ for more details. This attribute has no effect on non-X11 platforms. Note: Qt automaticaly sets this attribute for QToolBar.
Qt::WA_X11NetWmWindowTypeMenu	107	Adds _NET_WM_WINDOW_TYPE_MENU to the window's _NET_WM_WINDOW_TYPE X11 window property. See http://standards.freedesktop.org/wm-spec/ for more details. This attribute has no effect on non-X11 platforms. Note: Qt automatically sets this attribute for QMenu when torn-off.
Qt::WA_X11NetWmWindowTypeUtility	108	Adds _NET_WM_WINDOW_TYPE_UTILITY to the window's _NET_WM_WINDOW_TYPE X11 window property. See http://standards.freedesktop.org/wm-spec/ for more details. This attribute has no effect on non-X11 platforms. Note: Qt automatically sets this attribute for the Qt::Tool window type.
Qt::WA_X11NetWmWindowTypeSplash	109	Adds _NET_WM_WINDOW_TYPE_SPLASH to the window's _NET_WM_WINDOW_TYPE X11 window property. See http://standards.freedesktop.org/wm-spec/ for more details. This attribute has no effect on non-X11 platforms. Note: Qt automatically sets this attribute for the Qt::SplashScreen window type.
Qt::WA_X11NetWmWindowTypeDialog	110	Adds _NET_WM_WINDOW_TYPE_DIALOG to the window's _NET_WM_WINDOW_TYPE X11 window property. See http://standards.freedesktop.org/wm-spec/ for more details. This attribute has no effect on non-X11 platforms. Note: Qt automatically sets this attribute for the Qt::Dialog and Qt::Sheet window types.
Qt::WA_X11NetWmWindowTypeDropDownMenu	111	Adds _NET_WM_WINDOW_TYPE_DROPDOWN_MENU to the window's _NET_WM_WINDOW_TYPE X11 window property. See http://standards.freedesktop.org/wm-spec/ for more details. This attribute has no effect on non-X11 platforms. Note: Qt automatically sets this attribute for QMenus added to a QMenuBar.
Qt::WA_X11NetWmWindowTypePopupMenu	112	Adds _NET_WM_WINDOW_TYPE_POPUP_MENU to the window's _NET_WM_WINDOW_TYPE X11 window property. See http://standards.freedesktop.org/wm-spec/ for more details. This attribute has no effect on non-X11 platforms. Note: Qt automatically sets this attribute for QMenu.
Qt::WA_X11NetWmWindowTypeToolTip	113	Adds _NET_WM_WINDOW_TYPE_TOOLTIP to the window's _NET_WM_WINDOW_TYPE X11 window property. See http://standards.freedesktop.org/wm-spec/ for more details. This attribute has no effect on non-X11 platforms. Note: Qt automatically sets this attribute for the Qt::ToolTip window type.
Qt::WA_X11NetWmWindowTypeNotification	114	Adds _NET_WM_WINDOW_TYPE_NOTIFICATION to the window's _NET_WM_WINDOW_TYPE X11 window property. See http://standards.freedesktop.org/wm-spec/ for more details. This attribute has no effect on non-X11 platforms.
Qt::WA_X11NetWmWindowTypeCombo	115	Adds _NET_WM_WINDOW_TYPE_COMBO to the window's _NET_WM_WINDOW_TYPE X11 window property. See http://standards.freedesktop.org/wm-spec/ for more details. This attribute has no effect on non-X11 platforms. Note: Qt automatically sets this attribute for the QComboBox pop-up.
Qt::WA_X11NetWmWindowTypeDND	116	Adds _NET_WM_WINDOW_TYPE_DND to the window's _NET_WM_WINDOW_TYPE X11 window property. See http://standards.freedesktop.org/wm-spec/ for more details. This attribute has no effect on non-X11 platforms. Note: Qt automatically sets this attribute on the feedback widget used during a drag.
Qt::WA_MacFrameworkScaled	117	Enables resolution independence aware mode on Mac when using Carbon. This attribute has no effect on Cocoa. The attribute is off by default and can be enabled on a per-window basis.
Qt::WA_AcceptTouchEvents	121	Allows touch events (see QTouchEvent) to be sent to the widget. Must be set on all widgets that can handle touch events. Without this attribute set, events from a touch device will be sent as mouse events.
Qt::WA_TouchPadAcceptSingleTouchEvents	123	Allows touchpad single touch events to be sent to the widget.
Qt::WA_MergeSoftkeys	124	Allows widget to merge softkeys with parent widget, i.e. widget can set only one softkeys and request softkey implementation to take rest of the softkeys from the parent. Note parents are traversed until WA_MergeSoftkeys is not set. See also Qt::WA_MergeSoftkeysRecursively This attribute currently has effect only on Symbian platforms
Qt::WA_MergeSoftkeysRecursively	125	Allows widget to merge softkeys recursively with all parents. If this attribute is set, the widget parents are traversed until window boundary (widget without parent or dialog) is found. This attribute currently has effect only on Symbian platforms
Qt::WA_X11DoNotAcceptFocus	132	Asks the window manager to not give focus to this top level window. This attribute has no effect on non-X11 platforms.
Qt::WA_LockPortraitOrientation	128	Locks the widget to a portrait orientation, ignoring changes to the display's orientation with respect to the user.
Qt::WA_LockLandscapeOrientation	129	Locks the widget to a landscape orientation, ignoring changes to the display's orientation with respect to the user.
Qt::WA_AutoOrientation	130	Causes the widget to change orientation whenever the display changes orientation with respect to the user.

enum Qt::WindowFrameSection

This enum is used to describe parts of a window frame. It is returned by QGraphicsWidget::windowFrameSectionAt() to describe what section of the window frame is under the mouse.

Constant	Value
Qt::NoSection	0
Qt::LeftSection	1
Qt::TopLeftSection	2
Qt::TopSection	3
Qt::TopRightSection	4
Qt::RightSection	5
Qt::BottomRightSection	6
Qt::BottomSection	7
Qt::BottomLeftSection	8
Qt::TitleBarArea	9

This enum was introduced or modified in Qt 4.4.

See also QGraphicsWidget::windowFrameEvent(), QGraphicsWidget::paintWindowFrame(), and QGraphicsWidget::windowFrameSectionAt().

enum Qt::WindowModality

This enum specifies the behavior of a modal window. A modal window is one that blocks input to other windows. Note that windows that are children of a modal window are not blocked.

The values are:

Constant	Value	Description
Qt::NonModal	0	The window is not modal and does not block input to other windows.
Qt::WindowModal	1	The window is modal to a single window hierarchy and blocks input to its parent window, all grandparent windows, and all siblings of its parent and grandparent windows.
Qt::ApplicationModal	2	The window is modal to the application and blocks input to all windows.

See also QWidget::windowModality and QDialog.

enum Qt::WindowState
flags Qt::WindowStates

This enum type is used to specify the current state of a top-level window.

The states are

Constant	Value	Description
Qt::WindowNoState	0x00000000	The window has no state set (in normal state).
Qt::WindowMinimized	0x00000001	The window is minimized (i.e. iconified).
Qt::WindowMaximized	0x00000002	The window is maximized with a frame around it.
Qt::WindowFullScreen	0x00000004	The window fills the entire screen without any frame around it.
Qt::WindowActive	0x00000008	The window is the active window, i.e. it has keyboard focus.

The WindowStates type is a typedef for QFlags<WindowState>. It stores an OR combination of WindowState values.

enum Qt::WindowType
flags Qt::WindowFlags

This enum type is used to specify various window-system properties for the widget. They are fairly unusual but necessary in a few cases. Some of these flags depend on whether the underlying window manager supports them.

The main types are

Constant	Value	Description
Qt::Widget	0x00000000	This is the default type for QWidget. Widgets of this type are child widgets if they have a parent, and independent windows if they have no parent. See also Qt::Window and Qt::SubWindow.
Qt::Window	0x00000001	Indicates that the widget is a window, usually with a window system frame and a title bar, irrespective of whether the widget has a parent or not. Note that it is not possible to unset this flag if the widget does not have a parent.
Qt::Dialog	0x00000002 | Window	Indicates that the widget is a window that should be decorated as a dialog (i.e., typically no maximize or minimize buttons in the title bar). This is the default type for QDialog. If you want to use it as a modal dialog, it should be launched from another window, or have a parent and used with the QWidget::windowModality property. If you make it modal, the dialog will prevent other top-level windows in the application from getting any input. We refer to a top-level window that has a parent as a secondary window.
Qt::Sheet	0x00000004 | Window	Indicates that the window is a Macintosh sheet. Since using a sheet implies window modality, the recommended way is to use QWidget::setWindowModality(), or QDialog::open(), instead.
Qt::Drawer	0x00000006 | Window	Indicates that the widget is a Macintosh drawer.
Qt::Popup	0x00000008 | Window	Indicates that the widget is a pop-up top-level window, i.e. that it is modal, but has a window system frame appropriate for pop-up menus.
Qt::Tool	0x0000000a | Window	Indicates that the widget is a tool window. A tool window is often a small window with a smaller than usual title bar and decoration, typically used for collections of tool buttons. If there is a parent, the tool window will always be kept on top of it. If there isn't a parent, you may consider using Qt::WindowStaysOnTopHint as well. If the window system supports it, a tool window can be decorated with a somewhat lighter frame. It can also be combined with Qt::FramelessWindowHint. On Mac OS X, tool windows correspond to the Floating class of windows. This means that the window lives on a level above normal windows; it impossible to put a normal window on top of it. By default, tool windows will disappear when the application is inactive. This can be controlled by the Qt::WA_MacAlwaysShowToolWindow attribute.
Qt::ToolTip	0x0000000c | Window	Indicates that the widget is a tooltip. This is used internally to implement tooltips.
Qt::SplashScreen	0x0000000e | Window	Indicates that the window is a splash screen. This is the default type for QSplashScreen.
Qt::Desktop	0x00000010 | Window	Indicates that this widget is the desktop. This is the type for QDesktopWidget.
Qt::SubWindow	0x00000012	Indicates that this widget is a sub-window, such as a QMdiSubWindow widget.

There are also a number of flags which you can use to customize the appearance of top-level windows. These have no effect on other windows:

Constant	Value	Description
Qt::MSWindowsFixedSizeDialogHint	0x00000100	Gives the window a thin dialog border on Windows. This style is traditionally used for fixed-size dialogs.
Qt::MSWindowsOwnDC	0x00000200	Gives the window its own display context on Windows.
Qt::X11BypassWindowManagerHint	0x00000400	Bypass the window manager completely. This results in a borderless window that is not managed at all (i.e., no keyboard input unless you call QWidget::activateWindow() manually).
Qt::FramelessWindowHint	0x00000800	Produces a borderless window. The user cannot move or resize a borderless window via the window system. On X11, the result of the flag is dependent on the window manager and its ability to understand Motif and/or NETWM hints. Most existing modern window managers can handle this.

The CustomizeWindowHint flag is used to enable customization of the window controls. This flag must be set to allow the WindowTitleHint, WindowSystemMenuHint, WindowMinimizeButtonHint, WindowMaximizeButtonHint and WindowCloseButtonHint flags to be changed.

Constant	Value	Description
Qt::CustomizeWindowHint	0x02000000	Turns off the default window title hints.
Qt::WindowTitleHint	0x00001000	Gives the window a title bar.
Qt::WindowSystemMenuHint	0x00002000	Adds a window system menu, and possibly a close button (for example on Mac). If you need to hide or show a close button, it is more portable to use WindowCloseButtonHint.
Qt::WindowMinimizeButtonHint	0x00004000	Adds a minimize button. On some platforms this implies Qt::WindowSystemMenuHint for it to work.
Qt::WindowMaximizeButtonHint	0x00008000	Adds a maximize button. On some platforms this implies Qt::WindowSystemMenuHint for it to work.
Qt::WindowMinMaxButtonsHint	WindowMinimizeButtonHint | WindowMaximizeButtonHint	Adds a minimize and a maximize button. On some platforms this implies Qt::WindowSystemMenuHint for it to work.
Qt::WindowCloseButtonHint	0x08000000	Adds a close button. On some platforms this implies Qt::WindowSystemMenuHint for it to work.
Qt::WindowContextHelpButtonHint	0x00010000	Adds a context help button to dialogs. On some platforms this implies Qt::WindowSystemMenuHint for it to work.
Qt::MacWindowToolBarButtonHint	0x10000000	On Mac OS X adds a tool bar button (i.e., the oblong button that is on the top right of windows that have toolbars).
Qt::BypassGraphicsProxyWidget	0x20000000	Prevents the window and its children from automatically embedding themselves into a QGraphicsProxyWidget if the parent widget is already embedded. You can set this flag if you want your widget to always be a toplevel widget on the desktop, regardless of whether the parent widget is embedded in a scene or not.
Qt::WindowShadeButtonHint	0x00020000
Qt::WindowStaysOnTopHint	0x00040000	Informs the window system that the window should stay on top of all other windows. Note that on some window managers on X11 you also have to pass Qt::X11BypassWindowManagerHint for this flag to work correctly.
Qt::WindowStaysOnBottomHint	0x04000000	Informs the window system that the window should stay on bottom of all other windows. Note that on X11 this hint will work only in window managers that support _NET_WM_STATE_BELOW atom. If a window always on the bottom has a parent, the parent will also be left on the bottom. This window hint is currently not implemented for Mac OS X.
Qt::WindowOkButtonHint	0x00080000	Adds an OK button to the window decoration of a dialog. Only supported for Windows CE.
Qt::WindowCancelButtonHint	0x00100000	Adds a Cancel button to the window decoration of a dialog. Only supported for Windows CE.
Qt::WindowSoftkeysVisibleHint	0x40000000	Makes softkeys visible when widget is fullscreen. Only supported for Symbian.
Qt::WindowSoftkeysRespondHint	0x80000000	Makes softkeys to receive key events even when invisible. With this hint the softkey actions are triggered even the softkeys are invisible i.e. the window is displayed with showFullscreen(). Only supported for Symbian.
Qt::WindowType_Mask	0x000000ff	A mask for extracting the window type part of the window flags.

Obsolete flags:

Constant	Value	Description
Qt::WMouseNoMask	0x00080000	Use Qt::WA_MouseNoMask instead.
Qt::WDestructiveClose	0x00100000	Use Qt::WA_DeleteOnClose instead.
Qt::WStaticContents	0x00200000	Use Qt::WA_StaticContents instead.
Qt::WGroupLeader	0x00400000	No longer needed.
Qt::WShowModal	0x00800000	Use QWidget::windowModality instead.
Qt::WNoMousePropagation	0x01000000	Use Qt::WA_NoMousePropagation instead.
Qt::WType_TopLevel	Window	Use Qt::Window instead.
Qt::WType_Dialog	Dialog	Use Qt::Dialog instead.
Qt::WType_Popup	Popup	Use Qt::Popup instead.
Qt::WType_Desktop	Desktop	Use Qt::Desktop instead.
Qt::WType_Mask	WindowType_Mask	Use Qt::WindowType_Mask instead.
Qt::WStyle_Customize	0	No longer needed.
Qt::WStyle_NormalBorder	0	No longer needed.
Qt::WStyle_DialogBorder	MSWindowsFixedSizeDialogHint	Use Qt::MSWindowsFixedSizeDialogHint instead.
Qt::WStyle_NoBorder	FramelessWindowHint	Use Qt::FramelessWindowHint instead.
Qt::WStyle_Title	WindowTitleHint	Use Qt::WindowTitleHint instead.
Qt::WStyle_SysMenu	WindowSystemMenuHint	Use Qt::WindowSystemMenuHint instead.
Qt::WStyle_Minimize	WindowMinimizeButtonHint	Use Qt::WindowMinimizeButtonHint instead.
Qt::WStyle_Maximize	WindowMaximizeButtonHint	Use Qt::WindowMaximizeButtonHint instead.
Qt::WStyle_MinMax	WStyle_Minimize | WStyle_Maximize	Use Qt::WindowMinMaxButtonsHint instead.
Qt::WStyle_Tool	Tool	Use Qt::Tool instead.
Qt::WStyle_StaysOnTop	WindowStaysOnTopHint	Use Qt::WindowStaysOnTopHint instead.
Qt::WStyle_ContextHelp	WindowContextHelpButtonHint	Use Qt::WindowContextHelpButtonHint instead.
Qt::WPaintDesktop	0	No longer needed.
Qt::WPaintClever	0	No longer needed.
Qt::WX11BypassWM	X11BypassWindowManagerHint	Use Qt::X11BypassWindowManagerHint instead.
Qt::WWinOwnDC	MSWindowsOwnDC	Use Qt::MSWindowsOwnDC instead.
Qt::WMacSheet	Sheet	Use Qt::Sheet instead.
Qt::WMacDrawer	Drawer	Use Qt::Drawer instead.
Qt::WStyle_Splash	SplashScreen	Use Qt::SplashScreen instead.
Qt::WNoAutoErase	0	No longer needed.
Qt::WRepaintNoErase	0	No longer needed.
Qt::WNorthWestGravity	WStaticContents	Use Qt::WA_StaticContents instead.
Qt::WType_Modal	Dialog | WShowModal	Use Qt::Dialog and QWidget::windowModality instead.
Qt::WStyle_Dialog	Dialog	Use Qt::Dialog instead.
Qt::WStyle_NoBorderEx	FramelessWindowHint	Use Qt::FramelessWindowHint instead.
Qt::WResizeNoErase	0	No longer needed.
Qt::WMacNoSheet	0	No longer needed.

The WindowFlags type is a typedef for QFlags<WindowType>. It stores an OR combination of WindowType values.

See also QWidget::windowFlags and Window Flags Example.