Umesha MS questions

• Do I need to use COM (component object module)
• Difference between pointer and array [duplicate]
• waiting for a signal
• Difference between GetDC() and BeginPaint()
• QNetworkAccessManager timeout
• When to use static member function? [duplicate]
• What is the difference between BOOL and bool?
• When and how should I use exception handling?

Umesha MS answers