<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- /tmp/qt-3.0-reggie-28534/qt-x11-free-3.0.2/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-like device 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 of supported 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 of the 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> to determine 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 default is <tt>Auto</tt>, which enables auto-detection of the mouse protocol and device. <p> To add another protocol, new subclasses of QAutoMouseSubHandler or QMouseHandler 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 touchpanel and the iPAQ touchpanel. These are subclasses of QCalibratedMouseHandler which is in turn a 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 © 2001 <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 3.0.2</div> </table></div></address></body> </html>