SetWindowsHookEx returns 0 when compiling for the .NET 4.0 framework in 32bit machines

Question

I\'m trying to set a low level windows keyboard hook to grab three keys pressed even if the application is not in focus. To do this I\'m calling SetWindowsHookEx as

Answer 1

Solved it by targeting each platform separately. Configured VS to compile both a Win32 and a Win64 version and deploying on x86 and x64 machines their corresponding binary.

The Win32 or x86 runs on both 32bit and 64bit machines.