Truly Madly Deeply

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        private const UInt32 MOUSEEVENTF_LEFTDOWN = 0x0002;
        private const UInt32 MOUSEEVENTF_LEFTUP = 0x0004;
        private const UInt32 MOUSEEVENTF_MIDDLEDOWN = 0x00000020;
        private const UInt32 MOUSEEVENTF_MIDDLEUP = 0x00000040;
        private const UInt32 MOUSEEVENTF_MOVE = 0x00000001;
        private const UInt32 MOUSEEVENTF_WHEEL = 0x00000800;
        private const UInt32 MOUSEEVENTF_ABSOLUTE = 0x00008000;
        private const UInt32 MOUSEEVENTF_RIGHTDOWN = 0x00000008;
        private const UInt32 MOUSEEVENTF_RIGHTUP = 0x00000010;

        [DllImport("user32.dll")]
        private static extern void mouse_event(
        UInt32 dwFlags, // motion and click options
        UInt32 dx, // horizontal position or change
        UInt32 dy, // vertical position or change 
        int dwData, // wheel movement
        IntPtr dwExtraInfo // application-defined information
        );

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       private const int KEYEVENTF_KEYUP = 0x2;

       private const int KEYEVENTF_EXTENDEDKEY = 0x1;

private const int KEYEVENTF_KEYDOWN = 0x0;

       [DllImport("user32.dll")]
       private static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo); 

       VOID keybd_event(

　　 BYTE bVk, // virtual-key code

　　 BYTE bScan, // hardware scan code

　　 DWORD dwFlags, // flags specifying various function options

　　 DWORD dwExtraInfo // additional data associated with keystroke

　　 );

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