QFontMetrics not giving proper dimension

[jacek]

Can you enlighten me why this happens ?

Qt uses some 3rd party libraries to handle fonts and they might require some initialization and this usually happens when you create Q(Core)?Application instance.

What other classes in qt can cause problems when declared static (or global too) ?

I would suspect these classes and methods:

• QCoreApplication::application*Path()
• QApplication::desktop()
• QApplication::palette()
• QFont
• QFontDatabase
• QLibraryInfo
• QWidget
• QX11Info

There was also some problem with QObject, but AFAIR it was resolved.

The best way is to avoid global variables and to initialize static variables after the main was invoked.