Foreground Window Detection Detection

Question

I know that with GetForegroundWindow I can get the current active window handle, but now i want to detect when the active window (of any application) changes (become active) . the first solution that comes to my mind is

• save the current value (handle) returned by the GetForegroundWindow function.
• using the timer component again check the value returned by GetForegroundWindow and compare it with the old value.

I am wondering if there is a better way to do this, perhaps using a Windows message or something else.

Answer 1

Use SetWindowsHookEx to set the CBT hook. MSDN describes callback function