How do debug "Unhandled Win32 Exception"

I'm working throught the tutorial in C++ GUI Programming with Qt 4 and am getting an "Unhandled win32 exception happened in sortdialog.exe [3156]". The Visual Studio 2005 debugger pops up but I can only trace the assembly code - not the C code. How can I debug this code?

Thanks

Open the project in Visual Studio and then run the debug version. You will be able to find the place where the application is crashing.