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65 lines
2.7 KiB
65 lines
2.7 KiB
14 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/doc/qws.doc:452 -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>Porting your applications to Qt/Embedded</title>
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<style type="text/css"><!--
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--></style>
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</head>
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<body>
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<table border="0" cellpadding="0" cellspacing="0" width="100%">
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Main Classes</font></a>
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<font color="#004faf">Annotated</font></a>
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<font color="#004faf">Functions</font></a>
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</td>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Porting your applications to Qt/Embedded</h1>
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<p> Existing Qt applications should require no porting provided there is no
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platform dependent code. Platform dependent code includes system calls,
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calls to the underlying window system (Windows or X11), and Qt platform
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specific methods such as <a href="qapplication.html#x11EventFilter">QApplication::x11EventFilter</a>().
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<p> For cases where it is necessary to use platform dependent code there are
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macros defined that can be used to enable/disable code for each platform
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using <tt>#ifdef</tt> directives:
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<p> <center><table cellpadding="4" cellspacing="2" border="0">
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<tr bgcolor="#a2c511"> <th valign="top">Platform <th valign="top">Macro
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<tr bgcolor="#f0f0f0"> <td valign="top">Qt/X11 <td valign="top">Q_WS_X11
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<tr bgcolor="#d0d0d0"> <td valign="top">Qt/Windows <td valign="top">Q_WS_WIN
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<tr bgcolor="#f0f0f0"> <td valign="top">Qt/Embedded <td valign="top">Q_WS_QWS
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</table></center>
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<p> Qt/Embedded also requires the following flags to be defined when compiling
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applications:
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<pre>
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-DQWS -fno-exceptions -fno-rtti
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</pre>
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<p> Exceptions and RTTI are disabled in Qt/Embedded because they incur a large
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overhead in both size and speed.
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<!-- eof -->
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<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>Qt 3.3.8</div>
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</table></div></address></body>
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</html>
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