Debugging in QT Creator

Hi everyone!

I'm trying to debug a program that was made on an older QT version (dont know wich one), after having troubles with the .pro file finally it builds and compiles properly.

The "stop" point is on the main.cpp

Code:

---

int main(int argc, char *argv[])
{
   [B] QApplication app(argc, argv);[/B]
    Q_INIT_RESOURCE(camcontrol);
    MainWindow mainWin;
    mainWin.show();
    return app.exec();
}

---

Nothing after the call of QApplication is debugged, the argument of argv is the .exe file of my program, and on the debug window it sais... Stopped: "Signal-recived" from some point inside the function.

I tried to step into that function and other one and so on.... but found (understood) nothing.

Any idea?

Is the debugging helper installed?

I dont know how it looks like but it is checked on Tools->Options

• Use debugging helper

It should show the versions of Qt installed and whether or not the debugging helper is available for that version. Maybe sure the version for the code you are debugging is available.

Hi, i created a new project to make sure it works properly,but i have some problems.... i checked about debugging helper, i looked tools->options and qt Versions, there was a green tick indicating that its installed, but i clicked the 'Rebuild' button, and i got this:

Code:

---

\mingw32\bin\ld.exe: cannot open output file debug\gdbmacros.dll: Permission denied
collect2: ld returned 1 exit status
mingw32-make[1]: *** [debug\gdbmacros.dll] Error 1
mingw32-make[1]: Leaving directory `C:/Qt/2009.04/qt/qtc-debugging-helper'
mingw32-make: *** [debug-all] Error 2

---

i'm not an expert but.... there is something wrong!!!

i have QT Creator 1.2.1 and qt 4.5.3

You are correct, there is something wrong, and that something is that it can't create the file due a permission denied error. You need to fix that error and try again.

I'd say the error is either because you don't have permission (check readonly flag, user credentials) or because the file is in use.

I closed all my projects and i finally could rebuild debugging helper, but i get stuck at the same point as 1st post....

how can i debug my program?