QPixmap: Must construct a QApplication before a QPaintDevice

[gib]

(deleted because I found the cause of the error - a missing DLL)

[d_stranz]

Actually, the real reason for this is usually declaring a QPixmap instance as an automatic variable (typically as a global variable declared outside of main()) which the C++ runtime constructs prior to executing main() or the QApplication constructor. I suppose it is possible that if a DLL required to construct the QPixmap is missing, that could cause a similar complaint.

[gib]

The missing DLL was qwt.dll. Making this available stopped the error, I don't know why. I do have a lot of global variables.