qbutton.3qt

qt-embedded-2.3.8.tar.gz源码

.PP
See also setAccel().
.SH "void QButton::animateClick () \fC[slot]\fR"
Performs an animated click: The button is pressed and a short while later released.
.PP
pressed(), released(), clicked(), toggled(), and stateChanged() signals are emitted as appropriate.
.PP
This function does nothing if the button is disabled.
.PP
See also setAccel().
.SH "bool QButton::autoRepeat () const"
Returns TRUE if the button is auto-repeating, else FALSE.
.PP
The default is FALSE.
.PP
See also setAutoRepeat().
.SH "bool QButton::autoResize () const"
\fBThis function is obsolete.\fR It is provided to keep old source working, and will probably be removed in a future version of Qt. We strongly advise against using it in new code.
.PP
Strange pre-layout stuff.
.PP
Returns TRUE if auto-resizing is enabled, or FALSE if auto-resizing is disabled.
.PP
Auto-resizing is disabled by default.
.PP
See also setAutoResize().
.SH "void QButton::clicked () \fC[signal]\fR"
This signal is emitted when the button is activated, i.e. first pressed down and then released when the mouse cursor is inside the button, or when the accelerator key is typed, or when animateClick() is called.
.PP
See also pressed(), released() and toggled().
.SH "void QButton::drawButton ( QPainter * ) \fC[virtual protected]\fR"
Draws the button. The default implementation does nothing.
.PP
This virtual function is reimplemented by subclasses to draw real buttons. At some point in time, these reimplementations are supposed to call drawButtonLabel().
.PP
See also drawButtonLabel() and paintEvent().
.PP
Reimplemented in QToolButton, QCheckBox, QPushButton and QRadioButton.
.SH "void QButton::drawButtonLabel ( QPainter * ) \fC[virtual protected]\fR"
Draws the button text or pixmap.
.PP
This virtual function is reimplemented by subclasses to draw real buttons. It's invoked by drawButton().
.PP
See also drawButton() and paintEvent().
.PP
Reimplemented in QRadioButton, QPushButton, QCheckBox and QToolButton.
.SH "void QButton::enabledChange ( bool e ) \fC[virtual protected]\fR"
Reimplemented for internal reasons; the API is not affected.
.PP
Reimplemented from QWidget.
.SH "void QButton::focusInEvent ( QFocusEvent * e ) \fC[virtual protected]\fR"
Reimplemented for internal reasons; the API is not affected.
.PP
Reimplemented from QWidget.
.SH "bool QButton::focusNextPrevChild ( bool next ) \fC[virtual]\fR"
Reimplemented for internal reasons; the API is not affected.
.PP
Reimplemented from QWidget.
.SH "void QButton::focusOutEvent ( QFocusEvent * e ) \fC[virtual protected]\fR"
Reimplemented for internal reasons; the API is not affected.
.PP
Reimplemented from QWidget.
.SH "QButtonGroup * QButton::group () const"
Returns a pointer to the group of which this button is a member.
.PP
If the button is not a member of any QButtonGroup, this function returns 0.
.PP
See also setGroup() and QButtonGroup.
.SH "bool QButton::hitButton ( const QPoint & pos ) const \fC[virtual protected]\fR"
Returns TRUE if \fIpos\fR is inside the clickable button rectangle, or FALSE if it is outside.
.PP
Per default, the clickable area is the entire widget. Subclasses may reimplement it, though.
.PP
Reimplemented in QRadioButton.
.SH "bool QButton::isDown () const"
Returns TRUE if the button pressed down, or FALSE if it is standing up.
.PP
See also setDown().
.SH "bool QButton::isExclusiveToggle () const"
Returns TRUE if this button behaves exclusively inside a QButtonGroup. In that case, this button can only be toggled off by another button being toggled on.
.SH "bool QButton::isOn () const"
Returns TRUE if this toggle button is switched on, or FALSE if it is switched off.
.PP
See also setOn() and isToggleButton().
.PP
Examples:
.(l
qmag/qmag.cpp
.)l
.SH "bool QButton::isToggleButton () const"
Returns TRUE if the button is a toggle button.
.PP
See also setToggleButton().
.SH "void QButton::keyPressEvent ( QKeyEvent * e ) \fC[virtual protected]\fR"
Reimplemented for internal reasons; the API is not affected.
.PP
Reimplemented from QWidget.
.SH "void QButton::keyReleaseEvent ( QKeyEvent * e ) \fC[virtual protected]\fR"
Reimplemented for internal reasons; the API is not affected.
.PP
Reimplemented from QWidget.
.SH "void QButton::mouseMoveEvent ( QMouseEvent * e ) \fC[virtual protected]\fR"
Reimplemented for internal reasons; the API is not affected.
.PP
Reimplemented from QWidget.
.SH "void QButton::mousePressEvent ( QMouseEvent * e ) \fC[virtual protected]\fR"
Reimplemented for internal reasons; the API is not affected.
.PP
Reimplemented from QWidget.
.SH "void QButton::mouseReleaseEvent ( QMouseEvent * e ) \fC[virtual protected]\fR"
Reimplemented for internal reasons; the API is not affected.
.PP
Reimplemented from QWidget.
.SH "void QButton::paintEvent ( QPaintEvent * event ) \fC[virtual protected]\fR"
Handles paint events for buttons. Small and typically complex buttons (less than 300x100 pixels) are painted double-buffered to reduce flicker. The actually drawing is done in the virtual functions drawButton() and drawButtonLabel().
.PP
See also drawButton() and drawButtonLabel().
.PP
Reimplemented from QWidget.
.SH "const QPixmap * QButton::pixmap () const"
Returns the button pixmap, or 0 if the button has no pixmap.
.SH "void QButton::pressed () \fC[signal]\fR"
This signal is emitted when the button is pressed down.
.PP
See also released() and clicked().
.SH "void QButton::released () \fC[signal]\fR"
This signal is emitted when the button is released.
.PP
See also pressed(), clicked() and toggled().
.SH "void QButton::setAccel ( int key ) \fC[virtual]\fR"
Specifies an accelerator \fIkey\fR for the button, or removes the accelerator if \fIkey\fR is 0.
.PP
Setting a button text containing a shortcut character (for example the 'x' in E&xit) automatically defines an ALT+letter accelerator for the button. You only need to call this function in order to specify a custom accelerator.
.PP
Example:
.PP
.nf
.br
    QPushButton *b1 = new QPushButton;
.br
    b1->setText( "&OK" );               // sets accel ALT+'O'
.br
.br
    QPushButton *b2 = new QPushButton;
.br
    b2->setPixmap( printIcon );         // pixmap instead of text
.br
    b2->setAccel( CTRL+'P' );           // custom accel
.fi
.PP
See also accel(), setText() and QAccel.
.SH "void QButton::setAutoRepeat ( bool enable ) \fC[virtual]\fR"
Turns on auto-repeat for the button if \fIenable\fR is TRUE, or turns it off if \fIenable\fR is FALSE.
.PP
When auto-repeat is enabled, the clicked() signal is emitted at regular intervals while the buttons is down.
.PP
setAutoRepeat() has no effect for toggle buttons.
.PP
See also isDown(), autoRepeat() and clicked().
.SH "void QButton::setAutoResize ( bool enable ) \fC[virtual]\fR"
\fBThis function is obsolete.\fR It is provided to keep old source working, and will probably be removed in a future version of Qt. We strongly advise against using it in new code.
.PP
Strange pre-layout stuff.
.PP
Enables auto-resizing if \fIenable\fR is TRUE, or disables it if \fIenable\fR is FALSE.
.PP
When auto-resizing is enabled, the button will resize itself whenever the contents change.
.PP
See also autoResize() and adjustSize().
.SH "void QButton::setDown ( bool enable ) \fC[virtual]\fR"
Sets the state of the button to pressed down if \fIenable\fR is TRUE or to standing up if \fIenable\fR is FALSE.
.PP
If the button is a toggle button, it is \fInot\fR toggled. Call toggle() as well if you need to do that. The pressed() and released() signals are not emitted by this function.
.PP
This method is provided in case you need to reimplement the mouse event handlers.
.PP
See also isDown(), setOn(), toggle() and toggled().
.SH "void QButton::setOn ( bool enable ) \fC[protected]\fR"
Switches a toggle button on if \fIenable\fR is TRUE or off if \fIenable\fR is FALSE. This function should be called only for toggle buttons.
.PP
See also isOn() and isToggleButton().
.SH "void QButton::setPixmap ( const QPixmap & pixmap ) \fC[virtual]\fR"
Sets the button to display \fIpixmap\fR
.PP
If \fIpixmap\fR is monochrome (i.e. it is a QBitmap or its depth is 1) and it does not have a mask, this function sets the pixmap to be its own mask. The purpose of this is to draw transparent bitmaps, which is important for e.g. toggle buttons.
.PP
See also pixmap(), setText(), setAccel() and QPixmap::mask().
.SH "void QButton::setState ( ToggleState t ) \fC[protected]\fR"
This protected function sets the button state into state t but does \fInot\fR cause repainting.
.PP
See also setToggleType().
.SH "void QButton::setText ( const QString & text ) \fC[virtual]\fR"
Sets the button to display \fItext.\fR
.PP
If the text contains an ampersand, QButton creates an automatic accelerator for it, such as Alt-c for "&Cancel".
.PP
See also text(), setPixmap(), setAccel() and QPixmap::mask().
.PP
Examples:
.(l
layout/layout.cpp qmag/qmag.cpp xform/xform.cpp
.)l
.SH "void QButton::setToggleButton ( bool enable ) \fC[protected]\fR"
Makes the button a toggle button if \fIenable\fR is TRUE, or a normal button if \fIenable\fR is FALSE.
.PP
Note that this function is protected. It is called from subclasses to enable the toggle functionality. QCheckBox and QRadioButton are toggle buttons. QPushButton is initially not a toggle button, but QPushButton::setToggleButton() can be called to create toggle buttons.
.PP
See also isToggleButton().
.SH "void QButton::setToggleType ( ToggleType type ) \fC[protected]\fR"
Sets the type of toggling behavior. The default is \fISingleShot.\fR
.PP
Subclasses use this, and present it with a more comfortable interface.
.SH "QButton::ToggleState QButton::state() const"
Returns the state of the button.
.PP
See also ToggleState, ToggleType and setState().
.SH "void QButton::stateChanged ( int state ) \fC[signal]\fR"
This signal is emitted whenever a toggle button changes status. \fIstate\fR is 2 if the button is on, 1 if it is in the" no change" state or 0 if the button is off.
.PP
This may be the result of a user action, toggle() slot activation, setState(), or because setOn() was called.
.PP
See also clicked().
.SH "QString QButton::text () const"
Returns the button text, or null string if the button has no text.
.PP
See also setText().
.SH "void QButton::toggle () \fC[slot]\fR"
if this is a toggle button, toggles it.
.SH "QButton::ToggleType QButton::toggleType() const"
Returns the current toggle type.
.PP
See also setToggleType().
.SH "void QButton::toggled ( bool on ) \fC[signal]\fR"
This signal is emitted whenever a toggle button changes status. \fIon\fR is TRUE if the button is on, or FALSE if the button is off.
.PP
This may be the result of a user action, toggle() slot activation, or because setOn() was called.
.PP
See also  clicked().
.SH "SEE ALSO"
.BR http://doc.trolltech.com/qbutton.html
.BR http://www.trolltech.com/faq/tech.html
.SH COPYRIGHT
Copyright 1992-2001 Trolltech AS, http://www.trolltech.com.  See the
license file included in the distribution for a complete license
statement.
.SH AUTHOR
Generated automatically from the source code.
.SH BUGS
If you find a bug in Qt, please report it as described in
.BR http://doc.trolltech.com/bughowto.html .
Good bug reports make our job much simpler. Thank you.
.P
In case of content or formattting problems with this manual page, please
report them to
.BR [e-mail] .
Please include the name of the manual page (qbutton.3qt) and the Qt
version (2.3.8).