QMouseEvent Class Reference


The QMouseEvent class contains parameters that describe a mouse event. More...

#include <qevent.h>

Inherits QEvent.

List of all member functions.

Public Members


Detailed Description

The QMouseEvent class contains parameters that describe a mouse event.

Mouse events occur when a mouse button is pressed or released inside a widget, or when the mouse cursor is moved.

Mouse move events will only occur when some mouse button is pressed down, unless mouse tracking has been enabled.

Qt make an automatic mouse grab when a mouse button is pressed inside a widget, and the widget will continue to receive mouse events until the last mouse button is released.

The QWidget::setEnable() function can be used to enable or disable mouse and keyboard events for a widget.

The QCursor widget has static functions for reading and setting the position of the mouse cursor.

The event handlers QWidget::mousePressEvent(), QWidget::mouseReleaseEvent(), QWidget::mouseDoubleClickEvent() and QWidget::mouseMoveEvent() receive mouse events.

See also: QWidget::setMouseTracking() and QWidget::grabMouse().

Examples: table/table.cpp dclock/dclock.cpp connect/connect.cpp tooltip/tooltip.cpp hello/hello.cpp qmag/qmag.cpp widgets/widgets.cpp


Member Function Documentation

QMouseEvent::QMouseEvent ( int type, const QPoint &pos, int button, int state)

Constructs a mouse event object.

The type parameter must be Event_MouseButtonPress, Event_MouseButtonRelease, Event_MouseButtonDblClick or Event_MouseMove.

int QMouseEvent::button () const

Returns the button that caused the event.

Possible return values are LeftButton, RightButton, MidButton and NoButton.

Note that the returned value is always NoButton (0) when a mouse move event is received.

See also: state().

Examples: dclock/dclock.cpp widgets/widgets.cpp

const QPoint & QMouseEvent::pos () const

Returns the position of the mouse relative to the widget that received the event.

Examples: connect/connect.cpp tooltip/tooltip.cpp hello/hello.cpp qmag/qmag.cpp

int QMouseEvent::state () const

Returns the current button state (a combination of mouse buttons and keyboard modifiers).

The returned value is LeftButton, RightButton, MidButton, ShiftButton, ControlButton and AltButton OR'ed together.

See also: button().

Examples: widgets/widgets.cpp


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