QPushButton Class Reference |
A push button shown in the Macintosh widget style. Note that when a button's width becomes smaller than 50 or its height becomes smaller than 30, the button's corners are changed from round to square. Use the setMinimumSize() function to prevent this behavior. | |
A push button shown in the Windows XP widget style. | |
A push button shown in the Plastique widget style. |
In Qt, the QAbstractButton base class provides most of the modes and other API, and QPushButton provides GUI logic. See QAbstractButton for more information about the API.
See also QToolButton, QRadioButton, QCheckBox, and GUI Design Handbook: Push Button.
This property holds whether the push button is an auto default button.
If this property is set to true then the push button is an auto default button.
In some GUI styles a default button is drawn with an extra frame around it, up to 3 pixels or more. Qt automatically keeps this space free around auto-default buttons, i.e. auto-default buttons may have a slightly larger size hint.
This property's default is true for buttons that have a QDialog parent; otherwise it defaults to false.
See the default property for details of how default and auto-default interact.
Access functions:
This property holds whether the push button is the default button.
Default and autodefault buttons decide what happens when the user presses enter in a dialog.
A button with this property set to true (i.e., the dialog's default button,) will automatically be pressed when the user presses enter, with one exception: if an autoDefault button currently has focus, the autoDefault button is pressed. When the dialog has autoDefault buttons but no default button, pressing enter will press either the autoDefault button that currently has focus, or if no button has focus, the next autoDefault button in the focus chain.
In a dialog, only one push button at a time can be the default button. This button is then displayed with an additional frame (depending on the GUI style).
The default button behavior is provided only in dialogs. Buttons can always be clicked from the keyboard by pressing Spacebar when the button has focus.
If the default property is set to false on the current default button while the dialog is visible, a new default will automatically be assigned the next time a pushbutton in the dialog receives focus.
This property's default is false.
Access functions:
This property holds whether the button border is raised.
This property's default is false. If this property is set, most styles will not paint the button background unless the button is being pressed. setAutoFillBackground() can be used to ensure that the background is filled using the QPalette::Button brush.
Access functions:
Constructs a push button with no text and a parent.
Constructs a push button with the parent parent and the text text.
Constructs a push button with an icon and a text, and a parent.
Note that you can also pass a QPixmap object as an icon (thanks to the implicit type conversion provided by C++).
Destroys the push button.
Initialize option with the values from this QPushButton. This method is useful for subclasses when they need a QStyleOptionButton, but don't want to fill in all the information themselves.
See also QStyleOption::initFrom().
Returns the button's associated popup menu or 0 if no popup menu has been set.
See also setMenu().
Associates the popup menu menu with this push button. This turns the button into a menu button, which in some styles will produce a small triangle to the right of the button's text.
Ownership of the menu is not transferred to the push button.
Push buttons with popup menus shown in the Plastique widget style (left) and Cleanlooks widget style (right). |
See also menu().
Shows (pops up) the associated popup menu. If there is no such menu, this function does nothing. This function does not return until the popup menu has been closed by the user.
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