[Qt-interest] problem in QProcess

[chandrasekar wagmare]

hi friends,
please help
i create a code to embed gtk window to my Qt app ..
*mainwindow.cpp*

        procc2 = new QProcess<http://doc.trolltech.com/latest/QProcess.html>
();

      procc2->setProcessChannelMode(QProcess
<http://doc.trolltech.com/latest/QProcess.html>::MergedChannels);
      connect(procc2, SIGNAL(readyReadStandardOutput()), this,
SLOT(readFromStdout2()));

*this is a timer function calling every 400 milli sec
      *

MainWindow::timeout{
     if(...)
    {
     QString <http://doc.trolltech.com/latest/QString.html> program4 =
"./gtk_demo2";
     QStringList <http://doc.trolltech.com/latest/QStringList.html> arguments2;
                if(procc2->state() != QProcess
<http://doc.trolltech.com/latest/QProcess.html>::Running)
                {
                        procc2->start(program4, arguments2);
                }
        }*
**readfromstdout() function will call the function to embed the process

*MainWindow::readFromStdout2()
{
        int j = 0;
        bool ok;
        QString <http://doc.trolltech.com/latest/QString.html> out;
        printf("in singal fin\n");
        out = procc2->readAllStandardOutput();
        j = out.toInt(&ok, 16);
        printf("j =%d\n",j);
        if(j == 1)
                printf("device not connected\n");
        else{
                printf("the device connected\n");
               embed();
           }

  }
*     *

this is my code and the function embed() will embed the *"gtk_demo"* window
if it returns 0 or anything ...
the problem is on first time if i spawn the signal *
"readyReadStandardOutput()"*
is not emitted and readFromStdout2() slot is not called .
i closed the spawned gtk application *"gtk_demo"* and as i put the procc in
loop again it spawn *"gtk_demo"* its emitting
*"readyReadStandardOutput()"*and embedding perfectly ... why??

            only after closing the process started window i can get the std
output



please help me ...


-- 
CHANDRU
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