qmouseevent.3qt

tmark1.11:用于生成QT/EMBEDDED应用工程的Markfile文件

.TH QMouseEvent 3qt "6 July 1999" "Troll Tech AS" \" -*- nroff -*-
.\" Copyright 1992-1999 Troll Tech AS.  All rights reserved.  See the
.\" license file included in the distribution for a complete license
.\" statement.
.\"
.ad l
.nh
.SH NAME
QMouseEvent \- Parameters that describe a mouse event
.SH SYNOPSIS
.br
.PP
\fC#include <qevent.h>\fR
.PP
Inherits QEvent.
.PP
.SS "Public Members"
.in +1c
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.BI "\fBQMouseEvent\fR ( Type " "type" ", const QPoint & " "pos" ", int " "button" ", int state )"
.br
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.BI "\fBQMouseEvent\fR ( Type " "type" ", const QPoint & " "pos" ", const QPoint & " "globalPos" ", int " "button" ", int state )"
.br
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.BI "const QPoint& \fBpos\fR () const"
.br
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.BI "const QPoint& \fBglobalPos\fR () const"
.br
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.BI "int \fBx\fR () const"
.br
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.BI "int \fBy\fR () const"
.br
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.BI "int \fBglobalX\fR () const"
.br
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.BI "int \fBglobalY\fR () const"
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.BI "ButtonState \fBbutton\fR () const"
.br
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.BI "ButtonState \fBstate\fR () const"
.br
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.BI "ButtonState \fBstateAfter\fR () const"
.br
.in -1c
.SH DESCRIPTION
The QMouseEvent class contains parameters that describe a mouse event.
.PP
Mouse events occur when a mouse button is pressed or released inside a widget, or when the mouse cursor is moved.
.PP
Mouse move events will only occur when some mouse button is pressed down, unless mouse tracking has been enabled.
.PP
Qt makes 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.
.PP
The QWidget::setEnable() function can be used to enable or disable mouse and keyboard events for a widget.
.PP
The QCursor widget has static functions for reading and setting the position of the mouse cursor.
.PP
The event handlers QWidget::mousePressEvent(), QWidget::mouseReleaseEvent(), QWidget::mouseDoubleClickEvent() and QWidget::mouseMoveEvent() receive mouse events.
.PP
See also: QWidget::setMouseTracking() and QWidget::grabMouse().
.PP
Examples:
.(l
qtimage/qtimage.cpp drawlines/connect.cpp popup/popup.cpp qmag/qmag.cpp scrollview/scrollview.cpp trivial/trivial.cpp movies/main.cpp
.)l
.SH MEMBER FUNCTION DOCUMENTATION
.SH "QMouseEvent::QMouseEvent ( Type type, const QPoint & pos, const QPoint & globalPos, int button, int state )"
Constructs a mouse event object.
.PP
The type parameter must be \fCQEvent::MouseButtonPress, QEvent::MouseButtonRelease, QEvent::MouseButtonDblClick\fR or \fCQEvent::MouseMove.\fR
.SH "QMouseEvent::QMouseEvent ( Type type, const QPoint & pos, int button, int state )"
Constructs a mouse event object.
.PP
The type parameter must be \fCQEvent::MouseButtonPress, QEvent::MouseButtonRelease, QEvent::MouseButtonDblClick\fR or \fCQEvent::MouseMove.\fR
.SH "ButtonState QMouseEvent::button () const"
Returns the button that caused the event.
.PP
Possible return values are \fCLeftButton, RightButton, MidButton\fR and \fCNoButton.\fR
.PP
Note that the returned value is always \fCNoButton\fR (0) for mouse move events.
.PP
See also: state().
.PP
Examples:
.(l
movies/main.cpp
.)l
.SH "const QPoint & QMouseEvent::globalPos () const"
Returns the global position of the mouse pointer \fIat the time\fR of the event. This is important on asynchronous window systems like X11: Whenever you move your widgets around in response to mouse evens, globalPos() can differ a lot from the current pointer position QCursor::pos().
.PP
See also: globalX() and globalY().
.SH "int QMouseEvent::globalX () const"
Returns the global X position of the mouse pointer at the time of the event
.PP
See also: globalY() and globalPos().
.SH "int QMouseEvent::globalY () const"
Returns the global Y position of the mouse pointer at the time of the event
.PP
See also: globalX() and globalPos().
.SH "const QPoint & QMouseEvent::pos () const"
Returns the position of the mouse pointer, relative to the widget that received the event.
.PP
See also: x() and y().
.PP
Examples:
.(l
qtimage/qtimage.cpp drawlines/connect.cpp qmag/qmag.cpp
.)l
.SH "ButtonState QMouseEvent::state () const"
Returns the button state (a combination of mouse buttons and keyboard modifiers), i.e. what buttons and keys were being held depressed immediately before the event was generated.
.PP
Note that this means that for \fCQEvent::MouseButtonPress\fR and \fCQEvent::MouseButtonDblClick,\fR the flag for the button() itself will not be set in the state; while for \fCQEvent::MouseButtonRelease,\fR it will.
.PP
The returned value is \fCLeftButton, RightButton, MidButton, ShiftButton, ControlButton\fR and \fCAltButton\fR OR'ed together.
.PP
See also: button() and stateAfter().
.PP
Examples:
.(l
movies/main.cpp
.)l
.SH "ButtonState QMouseEvent::stateAfter () const"
Returns the state of buttons after the event.
.PP
See also: state().
.SH "int QMouseEvent::x () const"
Returns the X position of the mouse pointer, relative to the widget that received the event.
.PP
See also: y() and pos().
.PP
Examples:
.(l
scrollview/scrollview.cpp
.)l
.SH "int QMouseEvent::y () const"
Returns the Y position of the mouse pointer, relative to the widget that received the event.
.PP
See also: x() and pos().
.PP
Examples:
.(l
scrollview/scrollview.cpp
.)l
.SH "SEE ALSO"
.BR http://www.troll.no/qt/qmouseevent.html
.SH COPYRIGHT
Copyright 1992-1999 Troll Tech AS.  See the license file included in
the distribution for a complete license statement.
.SH AUTHOR
Generated automatically from the source code.