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diff --git a/doc/html/process-example.html b/doc/html/process-example.html new file mode 100644 index 0000000..4c226f3 --- /dev/null +++ b/doc/html/process-example.html @@ -0,0 +1,148 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> +<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/process/process.doc:5 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>Starting processes with IO redirection</title> +<style type="text/css"><!-- +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>Starting processes with IO redirection</h1> + + +<p> +<p> This example shows you how to start other processes with Qt and how +IO redirection is done. The example tries to start the uic (a tool +that comes with the Qt Designer) on a certain ui file and displays the +output of the command. +<p> <hr> +<p> Implementation (process.cpp): +<p> <pre>/**************************************************************************** +** $Id: qt/process.cpp 3.3.8 edited Jan 11 14:37 $ +** +** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. +** +** This file is part of an example program for Qt. This example +** program may be used, distributed and modified without limitation. +** +*****************************************************************************/ + +#include <<a href="qobject-h.html">qobject.h</a>> +#include <<a href="qprocess-h.html">qprocess.h</a>> +#include <<a href="qvbox-h.html">qvbox.h</a>> +#include <<a href="qtextview-h.html">qtextview.h</a>> +#include <<a href="qpushbutton-h.html">qpushbutton.h</a>> +#include <<a href="qapplication-h.html">qapplication.h</a>> +#include <<a href="qmessagebox-h.html">qmessagebox.h</a>> + +#include <stdlib.h> + +class UicManager : public <a href="qvbox.html">QVBox</a> +{ + <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a> + +public: + UicManager(); + ~UicManager() {} + +public slots: + void readFromStdout(); + void scrollToTop(); + +private: + <a href="qprocess.html">QProcess</a> *proc; + <a href="qtextview.html">QTextView</a> *output; + <a href="qpushbutton.html">QPushButton</a> *quitButton; +}; + +<a name="f204"></a>UicManager::UicManager() +{ + // Layout + output = new <a href="qtextview.html">QTextView</a>( this ); + quitButton = new <a href="qpushbutton.html">QPushButton</a>( <a href="qobject.html#tr">tr</a>("Quit"), this ); + <a href="qobject.html#connect">connect</a>( quitButton, SIGNAL(<a href="qbutton.html#clicked">clicked</a>()), + qApp, SLOT(<a href="qapplication.html#quit">quit</a>()) ); + <a href="qwidget.html#resize">resize</a>( 500, 500 ); + + // QProcess related code + proc = new <a href="qprocess.html">QProcess</a>( this ); + + // Set up the command and arguments. + // On the command line you would do: + // uic -tr <a href="i18n.html#i18n">i18n</a> "small_dialog.ui" +<a name="x97"></a> proc-><a href="qprocess.html#addArgument">addArgument</a>( "uic" ); + proc-><a href="qprocess.html#addArgument">addArgument</a>( "-tr" ); + proc-><a href="qprocess.html#addArgument">addArgument</a>( "i18n" ); + proc-><a href="qprocess.html#addArgument">addArgument</a>( "small_dialog.ui" ); + +<a name="x100"></a> <a href="qobject.html#connect">connect</a>( proc, SIGNAL(<a href="qprocess.html#readyReadStdout">readyReadStdout</a>()), + this, SLOT(readFromStdout()) ); +<a name="x98"></a> <a href="qobject.html#connect">connect</a>( proc, SIGNAL(<a href="qprocess.html#processExited">processExited</a>()), + this, SLOT(scrollToTop()) ); + +<a name="x101"></a> if ( !proc-><a href="qprocess.html#start">start</a>() ) { + // error handling +<a name="x96"></a> QMessageBox::<a href="qmessagebox.html#critical">critical</a>( 0, + <a href="qobject.html#tr">tr</a>("Fatal error"), + <a href="qobject.html#tr">tr</a>("Could not start the uic command."), + <a href="qobject.html#tr">tr</a>("Quit") ); + exit( -1 ); + } +} + +void <a name="f205"></a>UicManager::readFromStdout() +{ + // Read and process the data. + // Bear in mind that the data might be output in chunks. +<a name="x99"></a><a name="x103"></a> output-><a href="qtextedit.html#append">append</a>( proc-><a href="qprocess.html#readStdout">readStdout</a>() ); +} + +void <a name="f206"></a>UicManager::scrollToTop() +{ +<a name="x102"></a> output-><a href="qscrollview.html#setContentsPos">setContentsPos</a>( 0, 0 ); +} + +int main( int argc, char **argv ) +{ + <a href="qapplication.html">QApplication</a> a( argc, argv ); + UicManager manager; + a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &manager ); + manager.<a href="qwidget.html#show">show</a>(); + return a.<a href="qapplication.html#exec">exec</a>(); +} + +#include "process.moc" +</pre> + +<p>See also <a href="qprocess-examples.html">QProcess Examples</a>. + +<!-- eof --> +<p><address><hr><div align=center> +<table width=100% cellspacing=0 border=0><tr> +<td>Copyright © 2007 +<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> +<td align=right><div align=right>Qt 3.3.8</div> +</table></div></address></body> +</html> |