Did this issue ever get fixed ?
I am seeing what looks like the same problem. I am writing a Qt image viewer program and when I create the image window it crashes in the call to SetPixelFormat (attempts to dereference a NULL pointer and trashes the call stack). My computer has 3 monitors, two of which are driven by an ATI Radeon HD4600 PCI Express graphics card. The third monitor is being driven by the Intel graphics adaptor built in to the motherboard.
I only get the crash if the window is created on the third monitor. If I create the window on either of the other two monitors then I get no crash and my program works fine. I'm running Windows 7 64-bit and the ATI driver is version 8.970.100.7000 (dated 16 Nov 2012).
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Glenn