Viku questions

• Error checking through Macro
• Format XML file in c++ or Qt
• Restricting Character length in Regular expression
• forward declaration of namespace
• Confused between logical coordinates and device coordinates in Windows API
• Forward declaration of struct
• Slot is being called multiple times every time a signal is emitted
• Removing a non empty folder in Qt
• What is the use of wchar_t in general programming?

Viku answers