Opening an external application using Qprocess in QT designer

nunation · 01-29-2005, 04:06 AM

I have used qt to create a form with a button. Upon clicking the button, I hope to be able to start the xsane application. I would be very grateful if anybody could walk me step by step on how to do such a task on QT designer. Inclusion of codes would help a lot since I am new to programming

nixcraft · 01-29-2005, 06:41 AM

Use QT's QProcess class

Code:

        // new process can be started using QProcess
        QProcess *proc = new QProcess( this );
      // this is command you need to start aka process
        proc->addArgument( "konsole" );

        if ( !proc->start() ) {  // look for error
              QErrorMessage *m = new QErrorMessage(this);
              m->message("Failed to start KDE konsole process");
        }
  // rest of code

Read QProcess help in QT Assitant

Happy coding!

nunation · 01-29-2005, 04:26 PM

Thank you very much. There is still another problem. I'd like to know whether I have to put the code in the button's slot in Designer so that when I click it, the application would open. Thank you

nixcraft · 01-30-2005, 02:39 AM

You need to create new slot i.e. your fuction in Designer and then connect it with button and then put code in that slot