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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/doc/qws.doc:440 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Qt/Embedded Pointer Handling</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>Qt/Embedded Pointer Handling</h1> Pointer handling in Qt/Embedded works for any mouse or mouse-likedevice such as touchpanels and trackballs.<p> Usually only one pointer device is supported in an embedded device,but for demonstration purposes, Qt/Embedded includes a large number ofsupported devices.<p> <h2> Mouse Protocols</h2><a name="1"></a><p> Qt/Embedded normally auto-detects the mouse type and device if it is one ofthe supported types on <tt>/dev/psaux</tt> or one of the <tt>/dev/ttyS?</tt>serial lines. If multiple mice are detected, all may be used simultaneously.<p> Alternatively, you may set the environment variable <tt>QWS_MOUSE_PROTO</tt> todetermine which mouse to use. This environment variable may be set to:<blockquote><em><protocol></em><tt>:</tt><em><device></em></blockquote>where <em><protocol></em> is one of:<ul><li> MouseMan<li> IntelliMouse<li> Microsoft</ul>and <em><device></em> is the mouse device, often <tt>/dev/mouse</tt>.If no such variable is specified, the built-in defaultis <tt>Auto</tt>, which enables auto-detection of the mouse protocoland device.<p> To add another protocol, new subclasses of QAutoMouseSubHandler orQMouseHandler can be written in <tt>kernel/qwsmouse_qws.cpp</tt>.<p> <h2> Touch Panels</h2><a name="2"></a><p> Qt/Embedded ships with support for the NEC Vr41XX touchpaneland the iPAQ touchpanel.These are subclasses of QCalibratedMouseHandler which is in turna subclass of QMouseHandler in <tt>kernel/qwsmouse_qws.cpp</tt>.<p> <!-- eof --><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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