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Q3Button Class Reference
[Qt3Support module]

The Q3Button class is a compatibility base class of button widgets More...

 #include <Q3Button>

This class is part of the Qt 3 support library. It is provided to keep old source code working. Мы настоятельно не рекомендуем использовать этот класс в новом коде. See Porting to Qt 4 for more information.

Inherits QAbstractButton.

Открытые функции

Защищенные функции

Дополнительные унаследованные члены


Подробное описание

The Q3Button class is a compatibility base class of button widgets

In new code, use QAbstractButton.

To subclass Q3Button, you must reimplement at least drawButton() (to draw the button's outline) and drawButtonLabel() (to draw its text or pixmap). It is generally advisable to reimplement sizeHint() as well, and sometimes hitButton() (to determine whether a button press is within the button).


Описание функций-членов

Q3Button::Q3Button ( QWidget * parent = 0, const char * name = 0, Qt::WindowFlags f = 0 )

Constructs a standard button called name with parent parent, using the widget flags f.

Q3Button::~Q3Button ()

Уничтожает кнопку.

void Q3Button::drawButton ( QPainter * painter )   [virtual protected]

Draws the button on the given painter. Реализация по-умолчанию ничего не делает.

This virtual function is reimplemented by subclasses to draw real buttons. At some point, these reimplementations should call drawButtonLabel().

See also drawButtonLabel() and paintEvent().

void Q3Button::drawButtonLabel ( QPainter * painter )   [virtual protected]

Draws the button text or pixmap on the given painter.

This virtual function is reimplemented by subclasses to draw real buttons. It is invoked by drawButton().

See also drawButton() and paintEvent().

void Q3Button::paintEvent ( QPaintEvent * event )   [virtual protected]

Handles paint events, received in event, for buttons. Small and typically complex buttons are painted double-buffered to reduce flicker. The actually drawing is done in the virtual functions drawButton() and drawButtonLabel().

Reimplemented from QWidget.

See also drawButton() and drawButtonLabel().


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Qt 4.3.5