QPlatformCursor Class

The QPlatformCursor class provides information about pointer device events (movement, buttons), and requests to change the currently displayed cursor. 更多...

头：	#include <QPlatformCursor>
Since:	Qt 4.8
继承：	QObject

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公共函数

	QPlatformCursor (QPlatformScreen * screen )
virtual void	changeCursor (QCursor * widgetCursor , QWidget * widget ) = 0
virtual void	pointerEvent (const QMouseEvent & event )
virtual QPoint	pos () const
virtual void	setPos (const QPoint & pos )

29 公共函数继承自 QObject

额外继承成员

1 特性继承自 QObject
1 公共槽继承自 QObject
1 信号继承自 QObject
7 静态公共成员继承自 QObject
8 保护函数继承自 QObject

详细描述

The QPlatformCursor class provides information about pointer device events (movement, buttons), and requests to change the currently displayed cursor.

注意， QPlatformCursor does not include any graphics for display. An application that sets a QCursor may provide its own graphics.

另请参阅 QPlatformCursorImage .

成员函数文档编制

QPlatformCursor:: QPlatformCursor ( QPlatformScreen * screen )

构造 QPlatformCursor 为给定 screen .

`[pure virtual]` void QPlatformCursor:: changeCursor ( QCursor * widgetCursor , QWidget * widget )

This method is called by Qt whenever the cursor graphic should be changed.

Implementation of this method is mandatory for a subclass of QPlatformCursor .

widgetCursor is a pointer to the QCursor that should be displayed.

widget is a pointer to the widget currently displayed at QCursor::pos (). Note that this may be 0 if the current position is not occupied by a displayed widget.

另请参阅 QCursor::pos ().

`[虚拟]` void QPlatformCursor:: pointerEvent (const QMouseEvent & event )

This method is called by Qt whenever a QMouseEvent is generated by the underlying pointer input. event is a reference to the QMouseEvent in question. A default do-nothing implementation is provided.

`[虚拟]` QPoint QPlatformCursor:: pos () const

另请参阅 setPos ().

`[虚拟]` void QPlatformCursor:: setPos (const QPoint & pos )

另请参阅 pos ().

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