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<h1 align=center>QWidget类参考</h1>
<p>QWidget类是所有用户界面对象的基类。
<a href="#details">详情请见……</a>
<p><tt>#include <<a href="qwidget-h.html">qwidget.h</a>></tt>
<p>继承<a href="qobject.html">QObject</a>和<a href="qpaintdevice.html">QPaintDevice</a>。
<p>被<a href="qbutton.html">QButton</a>、<a href="qframe.html">QFrame</a>、<a href="qdialog.html">QDialog</a>、<a href="qcombobox.html">QComboBox</a>、<a href="qdatabrowser.html">QDataBrowser</a>、<a href="qdataview.html">QDataView</a>、<a href="qdatetimeedit.html">QDateTimeEdit</a>、<a href="qdesktopwidget.html">QDesktopWidget</a>、<a href="qdial.html">QDial</a>、<a href="qdockarea.html">QDockArea</a>、<a href="qglwidget.html">QGLWidget</a>、<a href="qheader.html">QHeader</a>、<a href="qmainwindow.html">QMainWindow</a>、<a href="qnpwidget.html">QNPWidget</a>、<a href="qscrollbar.html">QScrollBar</a>、<a href="qsizegrip.html">QSizeGrip</a>、<a href="qslider.html">QSlider</a>、<a href="qspinbox.html">QSpinBox</a>、<a href="qstatusbar.html">QStatusBar</a>、<a href="qtabbar.html">QTabBar</a>、<a href="qtabwidget.html">QTabWidget</a>、<a href="qworkspace.html">QWorkspace</a>和<a href="qxtwidget.html">QXtWidget</a>继承。
<p><a href="qwidget-members.html">所有成员函数的列表。</a>
<h2>公有成员</h2>
<ul>
<li><div class=fn><a href="#QWidget"><b>QWidget</b></a> ( QWidget * parent = 0, const char * name = 0, WFlags f = 0 )</div></li>
<li><div class=fn><a href="#~QWidget"><b>~QWidget</b></a> ()</div></li>
<li><div class=fn>WId <a href="#winId"><b>winId</b></a> () const</div></li>
<li><div class=fn>QStyle & <a href="#style"><b>style</b></a> () const</div></li>
<li><div class=fn>void <a href="#setStyle"><b>setStyle</b></a> ( QStyle * style )</div></li>
<li><div class=fn>QStyle * <a href="#setStyle-2"><b>setStyle</b></a> ( const QString & style )</div></li>
<li><div class=fn>bool <a href="#isTopLevel"><b>isTopLevel</b></a> () const</div></li>
<li><div class=fn>bool <a href="#isDialog"><b>isDialog</b></a> () const</div></li>
<li><div class=fn>bool <a href="#isPopup"><b>isPopup</b></a> () const</div></li>
<li><div class=fn>bool <a href="#isDesktop"><b>isDesktop</b></a> () const</div></li>
<li><div class=fn>bool <a href="#isModal"><b>isModal</b></a> () const</div></li>
<li><div class=fn>bool <a href="#isEnabled"><b>isEnabled</b></a> () const</div></li>
<li><div class=fn>bool <a href="#isEnabledTo"><b>isEnabledTo</b></a> ( QWidget * ancestor ) const</div></li>
<li><div class=fn>bool isEnabledToTLW () const <em>(obsolete)</em></div></li>
<li><div class=fn>QRect <a href="#frameGeometry"><b>frameGeometry</b></a> () const</div></li>
<li><div class=fn>const QRect & <a href="#geometry"><b>geometry</b></a> () const</div></li>
<li><div class=fn>int <a href="#x"><b>x</b></a> () const</div></li>
<li><div class=fn>int <a href="#y"><b>y</b></a> () const</div></li>
<li><div class=fn>QPoint <a href="#pos"><b>pos</b></a> () const</div></li>
<li><div class=fn>QSize <a href="#frameSize"><b>frameSize</b></a> () const</div></li>
<li><div class=fn>QSize <a href="#size"><b>size</b></a> () const</div></li>
<li><div class=fn>int <a href="#width"><b>width</b></a> () const</div></li>
<li><div class=fn>int <a href="#height"><b>height</b></a> () const</div></li>
<li><div class=fn>QRect <a href="#rect"><b>rect</b></a> () const</div></li>
<li><div class=fn>QRect <a href="#childrenRect"><b>childrenRect</b></a> () const</div></li>
<li><div class=fn>QRegion <a href="#childrenRegion"><b>childrenRegion</b></a> () const</div></li>
<li><div class=fn>QSize <a href="#minimumSize"><b>minimumSize</b></a> () const</div></li>
<li><div class=fn>QSize <a href="#maximumSize"><b>maximumSize</b></a> () const</div></li>
<li><div class=fn>int <a href="#minimumWidth"><b>minimumWidth</b></a> () const</div></li>
<li><div class=fn>int <a href="#minimumHeight"><b>minimumHeight</b></a> () const</div></li>
<li><div class=fn>int <a href="#maximumWidth"><b>maximumWidth</b></a> () const</div></li>
<li><div class=fn>int <a href="#maximumHeight"><b>maximumHeight</b></a> () const</div></li>
<li><div class=fn>void <a href="#setMinimumSize"><b>setMinimumSize</b></a> ( const QSize & )</div></li>
<li><div class=fn>virtual void <a href="#setMinimumSize-2"><b>setMinimumSize</b></a> ( int minw, int minh )</div></li>
<li><div class=fn>void <a href="#setMaximumSize"><b>setMaximumSize</b></a> ( const QSize & )</div></li>
<li><div class=fn>virtual void <a href="#setMaximumSize-2"><b>setMaximumSize</b></a> ( int maxw, int maxh )</div></li>
<li><div class=fn>void <a href="#setMinimumWidth"><b>setMinimumWidth</b></a> ( int minw )</div></li>
<li><div class=fn>void <a href="#setMinimumHeight"><b>setMinimumHeight</b></a> ( int minh )</div></li>
<li><div class=fn>void <a href="#setMaximumWidth"><b>setMaximumWidth</b></a> ( int maxw )</div></li>
<li><div class=fn>void <a href="#setMaximumHeight"><b>setMaximumHeight</b></a> ( int maxh )</div></li>
<li><div class=fn>QSize <a href="#sizeIncrement"><b>sizeIncrement</b></a> () const</div></li>
<li><div class=fn>void <a href="#setSizeIncrement"><b>setSizeIncrement</b></a> ( const QSize & )</div></li>
<li><div class=fn>virtual void <a href="#setSizeIncrement-2"><b>setSizeIncrement</b></a> ( int w, int h )</div></li>
<li><div class=fn>QSize <a href="#baseSize"><b>baseSize</b></a> () const</div></li>
<li><div class=fn>void <a href="#setBaseSize"><b>setBaseSize</b></a> ( const QSize & )</div></li>
<li><div class=fn>void <a href="#setBaseSize-2"><b>setBaseSize</b></a> ( int basew, int baseh )</div></li>
<li><div class=fn>void <a href="#setFixedSize"><b>setFixedSize</b></a> ( const QSize & s )</div></li>
<li><div class=fn>void <a href="#setFixedSize-2"><b>setFixedSize</b></a> ( int w, int h )</div></li>
<li><div class=fn>void <a href="#setFixedWidth"><b>setFixedWidth</b></a> ( int w )</div></li>
<li><div class=fn>void <a href="#setFixedHeight"><b>setFixedHeight</b></a> ( int h )</div></li>
<li><div class=fn>QPoint <a href="#mapToGlobal"><b>mapToGlobal</b></a> ( const QPoint & pos ) const</div></li>
<li><div class=fn>QPoint <a href="#mapFromGlobal"><b>mapFromGlobal</b></a> ( const QPoint & pos ) const</div></li>
<li><div class=fn>QPoint <a href="#mapToParent"><b>mapToParent</b></a> ( const QPoint & pos ) const</div></li>
<li><div class=fn>QPoint <a href="#mapFromParent"><b>mapFromParent</b></a> ( const QPoint & pos ) const</div></li>
<li><div class=fn>QPoint <a href="#mapTo"><b>mapTo</b></a> ( QWidget * parent, const QPoint & pos ) const</div></li>
<li><div class=fn>QPoint <a href="#mapFrom"><b>mapFrom</b></a> ( QWidget * parent, const QPoint & pos ) const</div></li>
<li><div class=fn>QWidget * <a href="#topLevelWidget"><b>topLevelWidget</b></a> () const</div></li>
<li><div class=fn>BackgroundMode <a href="#backgroundMode"><b>backgroundMode</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setBackgroundMode"><b>setBackgroundMode</b></a> ( BackgroundMode )</div></li>
<li><div class=fn>void <a href="#setBackgroundMode-2"><b>setBackgroundMode</b></a> ( BackgroundMode m, BackgroundMode visual )</div></li>
<li><div class=fn>const QColor & <a href="#foregroundColor"><b>foregroundColor</b></a> () const</div></li>
<li><div class=fn>const QColor & <a href="#eraseColor"><b>eraseColor</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setEraseColor"><b>setEraseColor</b></a> ( const QColor & color )</div></li>
<li><div class=fn>const QPixmap * <a href="#erasePixmap"><b>erasePixmap</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setErasePixmap"><b>setErasePixmap</b></a> ( const QPixmap & pixmap )</div></li>
<li><div class=fn>const QColorGroup & <a href="#colorGroup"><b>colorGroup</b></a> () const</div></li>
<li><div class=fn>const QPalette & <a href="#palette"><b>palette</b></a> () const</div></li>
<li><div class=fn>bool <a href="#ownPalette"><b>ownPalette</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setPalette"><b>setPalette</b></a> ( const QPalette & )</div></li>
<li><div class=fn>void <a href="#unsetPalette"><b>unsetPalette</b></a> ()</div></li>
<li><div class=fn>const QColor & <a href="#paletteForegroundColor"><b>paletteForegroundColor</b></a> () const</div></li>
<li><div class=fn>void <a href="#setPaletteForegroundColor"><b>setPaletteForegroundColor</b></a> ( const QColor & )</div></li>
<li><div class=fn>const QColor & <a href="#paletteBackgroundColor"><b>paletteBackgroundColor</b></a> () const</div></li>
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