C# Definition:

public enum HookType : int
{
     WH_JOURNALRECORD = 0,  
     WH_JOURNALPLAYBACK = 1,
     WH_KEYBOARD = 2,
     WH_GETMESSAGE = 3,
     WH_CALLWNDPROC = 4,
     WH_CBT = 5,
     WH_SYSMSGFILTER = 6,
     WH_MOUSE = 7,
     WH_HARDWARE = 8,
     WH_DEBUG = 9,
     WH_SHELL = 10,
     WH_FOREGROUNDIDLE = 11,
     WH_CALLWNDPROCRET = 12,
     WH_KEYBOARD_LL = 13,
     WH_MOUSE_LL = 14
}

VB Definition:

Enum HookType as Integer
     WH_JOURNALRECORD = 0
     WH_JOURNALPLAYBACK = 1
     WH_KEYBOARD = 2
     WH_GETMESSAGE = 3
     WH_CALLWNDPROC = 4
     WH_CBT = 5
     WH_SYSMSGFILTER = 6
     WH_MOUSE = 7
     WH_HARDWARE = 8
     WH_DEBUG = 9
     WH_SHELL = 10
     WH_FOREGROUNDIDLE = 11
     WH_CALLWNDPROCRET = 12
     WH_KEYBOARD_LL = 13
     WH_MOUSE_LL = 14
End Enum

User-Defined Types:

None.

Notes:

For the details about each of the values visit http://msdn.microsoft.com/en-us/library/windows/desktop/ms644990(v=vs.85).aspx

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Sample Code:

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Alternative Managed API:

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