Quote Originally Posted by krabicezpapundeklu View Post
I am using 4.8.1 SDK and Qt Creator 2.5, so things may be a little bit different for you...
I personally use Qt 4.8.0 with Qt Creator 2.4.1.

Quote Originally Posted by krabicezpapundeklu View Post
1) install Debugging Tools for Windows
I already had them installed so that I could debug using CDB using Qt Creator.

Quote Originally Posted by krabicezpapundeklu View Post
2) in Qt Creator: Tools > Options > Debugger > Source Paths Mapping - add:

Source path: c:\iwmake\build_vs2010_opensource_________________ PADDING_________________
Target path: c:\QtSDK\QtSources\4.8.1

I found source path by looking for some "path-like" strings in PDB files under c:\QtSDK\Desktop\Qt\4.8.1\msvc2010\lib.
Ok, I thought I would look for PDB files under c:\QtSDK\Desktop\Qt\4.8.0\msvc2010\lib, but couldn't find any.

I use Qt SDK so I decided to double check what is the latest version of Qt and Qt Creator which comes with it. The Update Qt SDK program tells me that there are no updates available, yet the website says that the latest version of Qt SDK comes with Qt 4.8.1, and indeed if I decide to maintain (rather than update) my copy of Qt SDK, then I can see that Qt 4.8.1 is available (hmm... so much for the Update Qt SDK program!).

Anyway, I have upgraded my copy of Qt to version 4.8.1 and I can now see some PDB files. So, there is already a difference between Qt 4.8.0 and Qt 4.8.1...

Next, I did what you suggested, but unfortunately for me, it doesn't work in my case (I mean, I tried to trace into the QApplication code using the 'mainwindow' Qt demo, but to no avail). Maybe it's related to my using Qt Creator 2.4.1 while you use version 2.5?...