Show progress of a time consuming operation

[rainman110]

Hi,

i am writing a program which calculates the irradiation dose for cancer treatment. This can take some time, so my idea was, to show up a simple dialog with a progress-bar in it. I dont know really how to do it because when the dialog is started, the program stops as long it is opened.

I like to implement such an interface:

class ProgressDialog : public QWidget {
public:
   signalProgress(); //the bar should move a bit to right
   setTotalProgress(int); //maxValue of progress bar
}

class ProgressDialog : public QWidget {
public:
   signalProgress(); //the bar should move a bit to right
   setTotalProgress(int); //maxValue of progress bar
}

To copy to clipboard, switch view to plain text mode 

My programm is a console program actually. I dont want to do all the calulation stuff in a window. So - how should i implement the main() function. My idea was like following, but this won't work:

void doComplicatedStuff(ProgressDialog& pd){
   while(calculating){
      someCalculation;
      pd.signalProgress();
   }
}
 
main(argc,argv){
    QApplication a(argc,argv);
    ProgressDialog pd;
    pd.show();
    doComplicatedStuff(pd);//no dialog visible
    return a.exec(); //here, the dialog pops up - swapping last lines is no solution
}

void doComplicatedStuff(ProgressDialog& pd){
   while(calculating){
      someCalculation;
      pd.signalProgress();
   }
}

main(argc,argv){
    QApplication a(argc,argv);
    ProgressDialog pd;
    pd.show();
    doComplicatedStuff(pd);//no dialog visible
    return a.exec(); //here, the dialog pops up - swapping last lines is no solution
}

To copy to clipboard, switch view to plain text mode 

So what can i do instead? I hope, you can help me.
Thanks! Thanks! Thanks!

Cheers