Qt classes in a callback function

[Luc4]

Hi! I'm using a function of a library which calls a callback function at a certain point. This callback function is defined like:

static void __stdcall function(...);
I'm trying to use Qt classes inside, but it seems it's not working. QMessageBox says I'm not in the GUI thread so I can't create messageboxes. I tried to use QImage and QPixmap, but it seems no image can be loaded. Do you have any idea why?
Thanks!

[wysota]

If Qt insists you are not in the GUI thread then you probably are not in the GUI thread You can post an event to an object in the gui thread to do the task for you.