qpushbutton.3qt

linux下GUI编程工具qt的在线连接帮助手册

Constructs a push button with no text.
.PP
The \fIparent\fR and \fIname\fR arguments are sent to the QWidget constructor.
.SH "QPushButton::QPushButton ( const QString & text, QWidget * parent, const char * name = 0 )"
Constructs a push button called \fIname\fR with the parent \fIparent\fR and the text \fItext\fR.
.SH "QPushButton::QPushButton ( const QIconSet & icon, const QString & text, QWidget * parent, const char * name = 0 )"
Constructs a push button with an \fIicon\fR and a \fItext\fR.
.PP
Note that you can also pass a QPixmap object as an icon (thanks to the implicit type conversion provided by C++).
.PP
The \fIparent\fR and \fIname\fR arguments are sent to the QWidget constructor.
.SH "QPushButton::~QPushButton ()"
Destroys the push button
.SH "QKeySequence QButton::accel () const"
Returns the accelerator associated with the button. See the "accel" property for details.
.SH "bool QPushButton::autoDefault () const"
Returns TRUE if the push button is the auto default button; otherwise returns FALSE. See the "autoDefault" property for details.
.SH "bool QButton::autoRepeat () const"
Returns TRUE if autoRepeat is enabled; otherwise returns FALSE. See the "autoRepeat" property for details.
.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), when the accelerator key is typed or when animateClick() is called.
.PP
The QButtonGroup::clicked() signal does the same job, if you want to connect several buttons to the same slot.
.PP
See also pressed(), released() and toggled().
.PP
Examples:
.)l fonts/simple-qfont-demo/viewer.cpp, listbox/listbox.cpp, network/clientserver/client/client.cpp, network/ftpclient/ftpmainwindow.cpp, richtext/richtext.cpp, t2/main.cpp and t4/main.cpp.
.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 QButtonGroup.
.SH "QIconSet * QPushButton::iconSet () const"
Returns the icon set on the push button. See the "iconSet" property for details.
.SH "bool QPushButton::isDefault () const"
Returns TRUE if the push button is the default button; otherwise returns FALSE. See the "default" property for details.
.SH "bool QButton::isDown () const"
Returns TRUE if the button is pressed; otherwise returns FALSE. See the "down" property for details.
.SH "bool QButton::isExclusiveToggle () const"
Returns TRUE if the button is an exclusive toggle; otherwise returns FALSE. See the "exclusiveToggle" property for details.
.SH "bool QPushButton::isFlat () const"
Returns TRUE if the border is disabled; otherwise returns FALSE. See the "flat" property for details.
.SH "bool QPushButton::isMenuButton () const"
Returns TRUE if the push button has a menu button on it; otherwise returns FALSE. See the "menuButton" property for details.
.SH "bool QButton::isOn () const"
Returns TRUE if the button is toggled; otherwise returns FALSE. See the "on" property for details.
.SH "bool QButton::isToggleButton () const"
Returns TRUE if the button is a toggle button; otherwise returns FALSE. See the "toggleButton" property for details.
.SH "const QPixmap * QButton::pixmap () const"
Returns the pixmap shown on the button. See the "pixmap" property for details.
.SH "QPopupMenu * QPushButton::popup () const"
Returns the button's associated popup menu or 0 if no popup menu has been defined.
.PP
See also setPopup().
.SH "void QButton::pressed ()\fC [signal]\fR"
This signal is emitted when the button is pressed down.
.PP
See also released() and clicked().
.PP
Examples:
.)l network/httpd/httpd.cpp and popup/popup.cpp.
.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 ( const QKeySequence & )\fC [virtual]\fR"
Sets the accelerator associated with the button. See the "accel" property for details.
.SH "void QPushButton::setAutoDefault ( bool autoDef )\fC [virtual]\fR"
Sets whether the push button is the auto default button to \fIautoDef\fR. See the "autoDefault" property for details.
.SH "void QButton::setAutoRepeat ( bool )\fC [virtual]\fR"
Sets whether autoRepeat is enabled. See the "autoRepeat" property for details.
.SH "void QPushButton::setDefault ( bool def )\fC [virtual]\fR"
Sets whether the push button is the default button to \fIdef\fR. See the "default" property for details.
.SH "void QButton::setDown ( bool )\fC [virtual]\fR"
Sets whether the button is pressed. See the "down" property for details.
.SH "void QPushButton::setFlat ( bool )"
Sets whether the border is disabled. See the "flat" property for details.
.SH "void QPushButton::setIconSet ( const QIconSet & )"
Sets the icon set on the push button. See the "iconSet" property for details.
.SH "void QPushButton::setIsMenuButton ( bool enable )\fC [virtual]\fR"
\fBThis function is obsolete.\fR It is provided to keep old source working. We strongly advise against using it in new code.
.SH "void QPushButton::setOn ( bool )\fC [virtual slot]\fR"
Sets whether the push button is toggled. See the "on" property for details.
.SH "void QButton::setPixmap ( const QPixmap & )\fC [virtual]\fR"
Sets the pixmap shown on the button. See the "pixmap" property for details.
.SH "void QPushButton::setPopup ( QPopupMenu * popup )"
Associates the popup menu \fIpopup\fR with this push button and thus turns it into a menu button.
.PP
Ownership of the popup menu is \fInot\fR transferred to the push button.
.PP
See also popup().
.PP
Example: qdir/qdir.cpp.
.SH "void QButton::setText ( const QString & )\fC [virtual]\fR"
Sets the text shown on the button. See the "text" property for details.
.SH "void QPushButton::setToggleButton ( bool )"
Sets whether the button is a toggle button. See the "toggleButton" property for details.
.SH "ToggleState QButton::state () const"
Returns TRUE if the button is toggled; otherwise returns FALSE. See the "toggleState" property for details.
.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 text shown on the button. See the "text" property for details.
.SH "void QButton::toggle ()\fC [slot]\fR"
Toggles the state of a toggle button.
.PP
See also on, on, toggled() and toggleButton.
.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().
.PP
Example: listbox/listbox.cpp.
.SS "Property Documentation"
.SH "QKeySequence accel"
This property holds the accelerator associated with the button.
.PP
This property is 0 if there is no accelerator set. If you set this property to 0 then any current accelerator is removed.
.PP
Set this property's value with setAccel() and get this property's value with accel().
.SH "bool autoDefault"
This property holds whether the push button is the auto default button.
.PP
If this property is set to TRUE then the push button will be the focused item in a dialog when the dialog is first shown.
.PP
Set this property's value with setAutoDefault() and get this property's value with autoDefault().
.SH "bool autoMask"
This property holds whether the button is automatically masked.
.PP
See also QWidget::autoMask.
.SH "bool autoRepeat"
This property holds whether autoRepeat is enabled.
.PP
If autoRepeat is enabled then the clicked() signal is emitted at regular intervals if the button is down. This property has no effect on toggle buttons.
.PP
Set this property's value with setAutoRepeat() and get this property's value with autoRepeat().
.SH "bool default"
This property holds whether the push button is the default button.
.PP
If this property is set to TRUE then the push button will be pressed if the user hits the Enter key in a dialog.
.PP
Set this property's value with setDefault() and get this property's value with isDefault().
.SH "bool flat"
This property holds whether the border is disabled.
.PP
Set this property's value with setFlat() and get this property's value with isFlat().
.SH "QIconSet iconSet"
This property holds the icon set on the push button.
.PP
This property will return 0 if the push button has no iconset
.PP
Set this property's value with setIconSet() and get this property's value with iconSet().
.SH "bool menuButton"
This property holds whether the push button has a menu button on it.
.PP
\fBThis property is obsolete.\fR It is provided to keep old source working. We strongly advise against using it in new code.
.PP
If this property is set to TRUE, then a down arrow is drawn on the push button to indicate that a menu will pop up if the user clicks on the arrow.
.PP
Get this property's value with isMenuButton().
.SH "bool on"
This property holds whether the push button is toggled.
.PP
This property should only be set for toggle push buttons.
.PP
See also on, toggle(), toggled() and toggleButton.
.PP
Set this property's value with setOn().
.SH "QPixmap pixmap"
This property holds the pixmap shown on the button.
.PP
If the pixmap is monochrome (i.e., it is a QBitmap or its depth is 1) and it does not have a mask, this property will set the pixmap to be its own mask. The purpose of this is to draw transparent bitmaps which are important for toggle buttons, for example.
.PP
pixmap() returns 0 if no pixmap was set.
.PP
Set this property's value with setPixmap() and get this property's value with pixmap().
.SH "QString text"
This property holds the text shown on the button.
.PP
This property will return a null string if the button has no text. If the text has an ampersand ('&') in it, then an accelerator is automatically created for it using the character after the '&' as the accelerator key.
.PP
Set this property's value with setText() and get this property's value with text().
.SH "bool toggleButton"
This property holds whether the button is a toggle button.
.PP
Toggle buttons have an on/off state similar to check boxes. A push button is initially not a toggle button.
.PP
See also on, toggle(), toggleButton and toggled().
.PP
Set this property's value with setToggleButton().

.SH "SEE ALSO"
.BR http://doc.trolltech.com/qpushbutton.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 help us to help you. Thank you.
.P
The definitive Qt documentation is provided in HTML format; it is
located at $QTDIR/doc/html and can be read using Qt Assistant or with
a web browser. This man page is provided as a convenience for those
users who prefer man pages, although this format is not officially
supported by Trolltech. 
.P
If you find errors in this manual page, please report them to
.BR [e-mail] .
Please include the name of the manual page (qpushbutton.3qt) and the Qt
version (3.0.0).