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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/src/kernel/qabstractlayout.cpp:71 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>QSpacerItem Class</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: #ffffff; color: black; }--></style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr bgcolor="#E5E5E5"><td valign=center> <a href="index.html"><font color="#004faf">Home</font></a> | <a href="classes.html"><font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> | <a href="annotated.html"><font color="#004faf">Annotated</font></a> | <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"><font color="#004faf">Functions</font></a></td><td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QSpacerItem Class Reference</h1><p>The QSpacerItem class provides blank space in a layout.<a href="#details">More...</a><p><tt>#include <<a href="qlayout-h.html">qlayout.h</a>></tt><p>Inherits <a href="qlayoutitem.html">QLayoutItem</a>.<p><a href="qspaceritem-members.html">List of all member functions.</a><h2>Public Members</h2><ul><li><div class=fn><a href="#QSpacerItem"><b>QSpacerItem</b></a> ( int w, int h, QSizePolicy::SizeType hData = QSizePolicy::Minimum, QSizePolicy::SizeType vData = QSizePolicy::Minimum )</div></li><li><div class=fn>void <a href="#changeSize"><b>changeSize</b></a> ( int w, int h, QSizePolicy::SizeType hData = QSizePolicy::Minimum, QSizePolicy::SizeType vData = QSizePolicy::Minimum )</div></li><li><div class=fn>virtual QSize <a href="#sizeHint"><b>sizeHint</b></a> () const</div></li><li><div class=fn>virtual QSize <a href="#minimumSize"><b>minimumSize</b></a> () const</div></li><li><div class=fn>virtual QSize <a href="#maximumSize"><b>maximumSize</b></a> () const</div></li><li><div class=fn>virtual QSizePolicy::ExpandData <a href="#expanding"><b>expanding</b></a> () const</div></li><li><div class=fn>virtual bool <a href="#isEmpty"><b>isEmpty</b></a> () const</div></li><li><div class=fn>virtual void <a href="#setGeometry"><b>setGeometry</b></a> ( const QRect & r )</div></li></ul><hr><a name="details"></a><h2>Detailed Description</h2>The QSpacerItem class provides blank space in a layout.<p> This class is used by custom layouts.<p> <p>See also <a href="qlayout.html">QLayout</a>, <a href="qlayoutitem.html#spacerItem">QLayout::spacerItem</a>(), <a href="appearance.html">Widget Appearance and Style</a> and <a href="geomanagement.html">Layout Management</a>.<hr><h2>Member Function Documentation</h2><h3 class=fn><a name="QSpacerItem"></a>QSpacerItem::QSpacerItem ( int w, int h, <a href="qsizepolicy.html#SizeType-enum">QSizePolicy::SizeType</a> hData = QSizePolicy::Minimum, <a href="qsizepolicy.html#SizeType-enum">QSizePolicy::SizeType</a> vData = QSizePolicy::Minimum )</h3><p> Constructs a spacer item with preferred width <em>w</em>, preferredheight <em>h</em>, horizontal size policy <em>hData</em> and vertical sizepolicy <em>vData</em>.<p> The default values provide a gap that is able to stretch ifnothing else wants the space.<h3 class=fn>void <a name="changeSize"></a>QSpacerItem::changeSize ( int w, int h, <a href="qsizepolicy.html#SizeType-enum">QSizePolicy::SizeType</a> hData = QSizePolicy::Minimum, <a href="qsizepolicy.html#SizeType-enum">QSizePolicy::SizeType</a> vData = QSizePolicy::Minimum )</h3>Changes this spacer item to have preferred width <em>w</em>, preferredheight <em>h</em>, horizontal size policy <em>hData</em> and vertical sizepolicy <em>vData</em>.<p> The default values provide a gap that is able to stretch ifnothing else wants the space.<h3 class=fn><a href="qsizepolicy.html#ExpandData-enum">QSizePolicy::ExpandData</a> <a name="expanding"></a>QSpacerItem::expanding () const<tt> [virtual]</tt></h3>Returns TRUE if this spacer item is expanding; otherwise returnsFALSE.<p>Reimplemented from <a href="qlayoutitem.html#expanding">QLayoutItem</a>.<h3 class=fn>bool <a name="isEmpty"></a>QSpacerItem::isEmpty () const<tt> [virtual]</tt></h3>Returns TRUE because a spacer item never contains widgets.<p>Reimplemented from <a href="qlayoutitem.html#isEmpty">QLayoutItem</a>.<h3 class=fn><a href="qsize.html">QSize</a> <a name="maximumSize"></a>QSpacerItem::maximumSize () const<tt> [virtual]</tt></h3>Returns the maximum size of this spacer item.<p>Reimplemented from <a href="qlayoutitem.html#maximumSize">QLayoutItem</a>.<h3 class=fn><a href="qsize.html">QSize</a> <a name="minimumSize"></a>QSpacerItem::minimumSize () const<tt> [virtual]</tt></h3>Returns the minimum size of this spacer item.<p>Reimplemented from <a href="qlayoutitem.html#minimumSize">QLayoutItem</a>.<h3 class=fn>void <a name="setGeometry"></a>QSpacerItem::setGeometry ( const <a href="qrect.html">QRect</a> & r )<tt> [virtual]</tt></h3>Stores the spacer item's rect <em>r</em> so that it can be returned by<a href="qlayoutitem.html#geometry">geometry</a>().<p>Reimplemented from <a href="qlayoutitem.html#setGeometry">QLayoutItem</a>.<h3 class=fn><a href="qsize.html">QSize</a> <a name="sizeHint"></a>QSpacerItem::sizeHint () const<tt> [virtual]</tt></h3>Returns the preferred size of this spacer item.<p>Reimplemented from <a href="qlayoutitem.html#sizeHint">QLayoutItem</a>.<!-- eof --><hr><p>This file is part of the <a href="index.html">Qt toolkit</a>.Copyright © 1995-2002<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center><table width=100% cellspacing=0 border=0><tr><td>Copyright © 2002 <a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a><td align=right><div align=right>Qt version 3.0.5</div></table></div></address></body></html>⌨️ 快捷键说明
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