Sending Keyboard Macro Commands to Game Windows

Question

I wanna do a macro program for a game. But there is a problem with sending keys to only game application (game window). I am using keybd_event API for sending keys

Answer 1

FindWindow API:
http://www.pinvoke.net/default.aspx/user32.FindWindowEx

SendMessage API:
http://www.pinvoke.net/default.aspx/user32/SendMessage.html

VB

Private Const WM_KEYDOWN As Integer = &H100
Private Const WM_KEYUP As Integer = &H101

C#

private static int WM_KEYDOWN = 0x100
private static int WM_KEYUP = 0x101