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I wrote program to sendInput to games and desktop applications instead of taking input from keyboard.This is the result:

Windows 7 (32 bit) : worked perfect in games and desktop applications.

Windows 8 (64 bit) : DID NOT work in games but worked in notepad.exe.

so Why it did not work with win 8 ?

Here is the code :

      [StructLayout(LayoutKind.Sequential)]
    struct MOUSEINPUT
    {
        public int dx;
        public int dy;
        public uint mouseData;
        public uint dwFlags;
        public uint time;
        public IntPtr dwExtraInfo;
    }

    [StructLayout(LayoutKind.Sequential)]
    struct KEYBDINPUT
    {
        public ushort wVk;
        public ushort wScan;
        public uint dwFlags;
        public uint time;
        public IntPtr dwExtraInfo;
    }

    [StructLayout(LayoutKind.Sequential)]
    struct HARDWAREINPUT
    {
        public int uMsg;
        public short wParamL;
        public short wParamH;
    }

    [StructLayout(LayoutKind.Explicit)]
    struct MouseKeybdHardwareInputUnion
    {
        [FieldOffset(0)]
        public MOUSEINPUT mi;

        [FieldOffset(0)]
        public KEYBDINPUT ki;

        [FieldOffset(0)]
        public HARDWAREINPUT hi;
    }

    [StructLayout(LayoutKind.Sequential)]
    struct INPUT
    {
        public uint type;
        public MouseKeybdHardwareInputUnion mkhi;
    }
    enum SendInputFlags
    {
        KEYEVENTF_EXTENDEDKEY = 0x0001,
        KEYEVENTF_KEYUP = 0x0002,
        KEYEVENTF_UNICODE = 0x0004,
        KEYEVENTF_SCANCODE = 0x0008,
    }

    [DllImport("user32.dll")]
    static extern UInt32 SendInput(UInt32 nInputs, [MarshalAs(UnmanagedType.LPArray, SizeConst = 1)] INPUT[] pInputs, Int32 cbSize);
    public static void StrokeKey(ushort codeOfKey)
    {
        INPUT[] InputData = new INPUT[1];
        ushort ScanCode = codeOfKey;
        InputData[0].type = 1;
        InputData[0].mkhi.ki.wScan = (ushort)ScanCode;
        InputData[0].mkhi.ki.dwFlags = (uint)SendInputFlags.KEYEVENTF_SCANCODE;

        if (SendInput(1, InputData, Marshal.SizeOf(InputData[0])) == 0)
        {
            String blad = "SendInput failed with code: " + Marshal.GetLastWin32Error().ToString();
            System.Diagnostics.Debug.WriteLine(blad);
        }
    }


    public static void ReleaseKey(ushort codeOfKey)
    {
        INPUT[] InputData = new INPUT[1];
        ushort ScanCode = codeOfKey;
        InputData[0].type = 1;
        InputData[0].mkhi.ki.wScan = (ushort)ScanCode;
        InputData[0].mkhi.ki.dwFlags = (uint)SendInputFlags.KEYEVENTF_KEYUP | (uint)SendInputFlags.KEYEVENTF_SCANCODE;
        InputData[0].mkhi.ki.time = 0;
        InputData[0].mkhi.ki.dwExtraInfo = IntPtr.Zero;
        SendInput(1, InputData, Marshal.SizeOf(InputData[0]));
    }
Marks Mal
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    What error code do you get when it fails? Also, see http://stackoverflow.com/q/6830651/56778, which looks related. – Jim Mischel Mar 13 '13 at 19:20
  • no error ,it just do not do the key press as expected in games in windows 8 while worked in same games in windows 7 – Marks Mal Mar 13 '13 at 19:22
  • I don't see anything wrong. Hacking games is never not a problem. Maybe it now uses raw input, maybe the keyboard focus is not where you hope it is. Unguessable. – Hans Passant Mar 13 '13 at 19:53

1 Answers1

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most likely pointersize is different on 32 bits its size 4 on 64 bits its size 8

junkew
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