QDesignerFormWindowManagerInterface Class

The QDesignerFormWindowManagerInterface class allows you to manipulate the collection of form windows in Qt Designer, and control Qt Designer's form editing actions.

Article lu fois.

L'auteur

The Qt Company Ltd.

L'article

Publié le 26 janvier 2024 - Mis à jour le 26 janvier 2024

Liens sociaux

QDesignerFormWindowManagerInterface Class▲

Header: QDesignerFormWindowManagerInterface
CMake:

find_package(Qt6 REQUIRED COMPONENTS Designer)

target_link_libraries(mytarget PRIVATE Qt6::Designer)
qmake: QT += designer
Inherits: QObject

Detailed Description▲

QDesignerFormWindowManagerInterface is not intended to be instantiated directly. Qt Designer uses the form window manager to control the various form windows in its workspace. You can retrieve an interface to Qt Designer's form window manager using the QDesignerFormEditorInterface::formWindowManager() function. For example:

Sélectionnez

        auto *manager = formEditor-&gt;formWindowManager();
        auto *formWindow = manager-&gt;formWindow(0);

        manager-&gt;setActiveFormWindow(formWindow);

When implementing a custom widget plugin, a pointer to Qt Designer's current QDesignerFormEditorInterface object (formEditor in the example above) is provided by the QDesignerCustomWidgetInterface::initialize() function's parameter. You must subclass the QDesignerCustomWidgetInterface to expose your plugin to Qt Designer.

The form window manager interface provides the createFormWindow() function that enables you to create a new form window which you can add to the collection of form windows that the manager maintains, using the addFormWindow() slot. It also provides the formWindowCount() function returning the number of form windows currently under the manager's control, the formWindow() function returning the form window associated with a given index, and the activeFormWindow() function returning the currently selected form window. The removeFormWindow() slot allows you to reduce the number of form windows the manager must maintain, and the setActiveFormWindow() slot allows you to change the form window focus in Qt Designer's workspace.

In addition, QDesignerFormWindowManagerInterface contains a collection of functions that enables you to intervene and control Qt Designer's form editing actions. All these functions return the original action, making it possible to propagate the function further after intervention.

Finally, the interface provides three signals which are emitted when a form window is added, when the currently selected form window changes, or when a form window is removed, respectively. All the signals carry the form window in question as their parameter.

Member Type Documentation▲

[since 5.0] enum QDesignerFormWindowManagerInterface::Action▲

Specifies an action of Qt Designer.

Constant	Value	Description
QDesignerFormWindowManagerInterface::CutAction	100	Clipboard Cut
QDesignerFormWindowManagerInterface::CopyAction	101	Clipboard Copy
QDesignerFormWindowManagerInterface::PasteAction	102	Clipboard Paste
QDesignerFormWindowManagerInterface::DeleteAction	103	Clipboard Delete
QDesignerFormWindowManagerInterface::SelectAllAction	104	Select All
QDesignerFormWindowManagerInterface::LowerAction	200	Lower current widget
QDesignerFormWindowManagerInterface::RaiseAction	201	Raise current widget
QDesignerFormWindowManagerInterface::UndoAction	300	Undo
QDesignerFormWindowManagerInterface::RedoAction	301	Redo
QDesignerFormWindowManagerInterface::HorizontalLayoutAction	400	Lay out using QHBoxLayout
QDesignerFormWindowManagerInterface::VerticalLayoutAction	401	Lay out using QVBoxLayout
QDesignerFormWindowManagerInterface::SplitHorizontalAction	402	Lay out in horizontal QSplitter
QDesignerFormWindowManagerInterface::SplitVerticalAction	403	Lay out in vertical QSplitter
QDesignerFormWindowManagerInterface::GridLayoutAction	404	Lay out using QGridLayout
QDesignerFormWindowManagerInterface::FormLayoutAction	405	Lay out using QFormLayout
QDesignerFormWindowManagerInterface::BreakLayoutAction	406	Break existing layout
QDesignerFormWindowManagerInterface::AdjustSizeAction	407	Adjust size
QDesignerFormWindowManagerInterface::SimplifyLayoutAction	408	Simplify QGridLayout or QFormLayout
QDesignerFormWindowManagerInterface::DefaultPreviewAction	500	Create a preview in default style
QDesignerFormWindowManagerInterface::FormWindowSettingsDialogAction	600	Show dialog with form settings

This enum was introduced or modified in Qt 5.0.

[since 5.0] enum QDesignerFormWindowManagerInterface::ActionGroup▲

Specifies an action group of Qt Designer.

Constant	Value	Description
QDesignerFormWindowManagerInterface::StyledPreviewActionGroup	100	Action group containing styled preview actions

This enum was introduced or modified in Qt 5.0.

Member Function Documentation▲

[explicit] QDesignerFormWindowManagerInterface::QDesignerFormWindowManagerInterface(QObject *parent = nullptr)▲

Constructs an interface with the given parent for the form window manager.

[virtual] QDesignerFormWindowManagerInterface::~QDesignerFormWindowManagerInterface()▲

Destroys the interface for the form window manager.

[pure virtual, since 5.0] QAction *QDesignerFormWindowManagerInterface::action(QDesignerFormWindowManagerInterface::Action action) const▲

Returns the action specified by the enumeration value action.

Obsoletes the action accessors of Qt 4.X.

This function was introduced in Qt 5.0.

[pure virtual, since 5.0] QActionGroup *QDesignerFormWindowManagerInterface::actionGroup(QDesignerFormWindowManagerInterface::ActionGroup actionGroup) const▲

Returns the action group specified by the enumeration value actionGroup.

This function was introduced in Qt 5.0.

[pure virtual] QDesignerFormWindowInterface *QDesignerFormWindowManagerInterface::activeFormWindow() const▲

Returns the currently active form window in Qt Designer's workspace.

void QDesignerFormWindowManagerInterface::activeFormWindowChanged(QDesignerFormWindowInterface *formWindow)▲

This signal is emitted when the contents of the currently active form window in Qt Designer's workspace changed. A pointer to the currently active formWindow is passed as an argument.

[pure virtual] void QDesignerFormWindowManagerInterface::addFormWindow(QDesignerFormWindowInterface *formWindow)▲

Adds the given formWindow to the collection of windows that Qt Designer's form window manager maintains.

[pure virtual, since 5.0] void QDesignerFormWindowManagerInterface::closeAllPreviews()▲

Close all currently open previews.

This function was introduced in Qt 5.0.

[pure virtual] QDesignerFormEditorInterface *QDesignerFormWindowManagerInterface::core() const▲

Returns a pointer to Qt Designer's current QDesignerFormEditorInterface object.

[pure virtual] QDesignerFormWindowInterface QDesignerFormWindowManagerInterface::createFormWindow(QWidget parent = nullptr, Qt::WindowFlags flags = Qt::WindowFlags())▲

Creates a form window with the given parent and the given window flags.

[pure virtual] QPixmap QDesignerFormWindowManagerInterface::createPreviewPixmap() const▲

Creates a pixmap representing the preview of the currently active form.

[pure virtual] QDesignerFormWindowInterface *QDesignerFormWindowManagerInterface::formWindow(int index) const▲

Returns the form window at the given index.

void QDesignerFormWindowManagerInterface::formWindowAdded(QDesignerFormWindowInterface *formWindow)▲

This signal is emitted when a new form window is added to the collection of windows that Qt Designer's form window manager maintains. A pointer to the new formWindow is passed as an argument.

[pure virtual] int QDesignerFormWindowManagerInterface::formWindowCount() const▲

Returns the number of form windows maintained by Qt Designer's form window manager.

void QDesignerFormWindowManagerInterface::formWindowRemoved(QDesignerFormWindowInterface *formWindow)▲

This signal is emitted when a form window is removed from the collection of windows that Qt Designer's form window manager maintains. A pointer to the removed formWindow is passed as an argument.

void QDesignerFormWindowManagerInterface::formWindowSettingsChanged(QDesignerFormWindowInterface *formWindow)▲

This signal is emitted when the settings of the form window change. It can be used to update window titles, etc. accordingly. A pointer to the formWindow is passed as an argument.

[pure virtual] void QDesignerFormWindowManagerInterface::removeFormWindow(QDesignerFormWindowInterface *formWindow)▲

Removes the given formWindow from the collection of windows that Qt Designer's form window manager maintains.

[pure virtual] void QDesignerFormWindowManagerInterface::setActiveFormWindow(QDesignerFormWindowInterface *formWindow)▲

Sets the given formWindow to be the currently active form window in Qt Designer's workspace.

[pure virtual, since 5.0] void QDesignerFormWindowManagerInterface::showPluginDialog()▲

Opens a dialog showing the plugins loaded by Qt Designer's and its plugin load failures.

This function was introduced in Qt 5.0.

[pure virtual, since 5.0] void QDesignerFormWindowManagerInterface::showPreview()▲

Show a preview of the current form using the default parameters.

This function was introduced in Qt 5.0.

Obsolete Members for QDesignerFormWindowManagerInterface▲

The following members of class QDesignerFormWindowManagerInterface are deprecated. We strongly advise against using them in new code.