C# 模拟键盘输入以进行处理时出现问题

我试图用c#模拟某个进程的键盘输入。 输入字符和数字很好，但当我尝试模拟一个“特殊字符”（回车、制表符等）按键时，什么也没发生

让我印象深刻的是，模拟这些特殊角色在其他进程（如Skype）上效果很好

你知道是什么导致了这种奇怪的互动吗？我也愿意尝试其他语言的东西，因为我在我的项目中还没有走那么远

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我试过使用and，它们都有相同的结果，输入字符有效，但没有特殊的键。

我设法解决了这个问题。我将发布我的解决方案，以防有人偶然发现这篇文章与我遇到的问题相同

解决办法其实相当简单。如果您不发送虚拟键代码而发送键盘扫描代码，则一切正常。 这里有一个简单的例子

using System.Runtime.InteropServices;
...
    public static void PressEnter()
    {
        INPUT input = new INPUT();
        input.type = (int)InputType.INPUT_KEYBOARD;
        input.ki.wScan = 0x1C;
        input.ki.dwFlags = (int)KEYEVENTF.SCANCODE;
        input.ki.dwExtraInfo = GetMessageExtraInfo();

        var arrayToSend = new INPUT[] { input };

        SendInput(1, arrayToSend, Marshal.SizeOf(input)); //Send KeyDown
        arrayToSend[0].ki.dwFlags = (int)KEYEVENTF.SCANCODE | (int)KEYEVENTF.KEYUP;
        SendInput(1, arrayToSend, Marshal.SizeOf(input)); //Send KeyUp
    }

其他必要信息：

   [StructLayout(LayoutKind.Explicit)]
    public struct INPUT
    {
        [FieldOffset(4)]
        public HARDWAREINPUT hi;
        [FieldOffset(4)]
        public KEYBDINPUT ki;
        [FieldOffset(4)]
        public MOUSEINPUT mi;
        [FieldOffset(0)]
        public int type;
    }

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

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

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

    [Flags]
    public enum InputType
    {
        INPUT_MOUSE = 0,
        INPUT_KEYBOARD = 1,
        INPUT_HARDWARE = 2
    }

    [Flags]
    public enum KEYEVENTF
    {
        KEYDOWN = 0,
        EXTENDEDKEY = 0x0001,
        KEYUP = 0x0002,
        UNICODE = 0x0004,
        SCANCODE = 0x0008,
    }

    [DllImport("user32.dll", SetLastError = true)]
    public static extern IntPtr GetMessageExtraInfo();
    [DllImport("user32.dll", SetLastError = true)]
    public static extern uint SendInput(uint nInputs, INPUT[] pInputs, int cbSize);

---

我设法解决了它。我将发布我的解决方案，以防有人偶然发现这篇文章与我遇到的问题相同

解决办法其实相当简单。如果您不发送虚拟键代码而发送键盘扫描代码，则一切正常。 这里有一个简单的例子

using System.Runtime.InteropServices;
...
    public static void PressEnter()
    {
        INPUT input = new INPUT();
        input.type = (int)InputType.INPUT_KEYBOARD;
        input.ki.wScan = 0x1C;
        input.ki.dwFlags = (int)KEYEVENTF.SCANCODE;
        input.ki.dwExtraInfo = GetMessageExtraInfo();

        var arrayToSend = new INPUT[] { input };

        SendInput(1, arrayToSend, Marshal.SizeOf(input)); //Send KeyDown
        arrayToSend[0].ki.dwFlags = (int)KEYEVENTF.SCANCODE | (int)KEYEVENTF.KEYUP;
        SendInput(1, arrayToSend, Marshal.SizeOf(input)); //Send KeyUp
    }

其他必要信息：

   [StructLayout(LayoutKind.Explicit)]
    public struct INPUT
    {
        [FieldOffset(4)]
        public HARDWAREINPUT hi;
        [FieldOffset(4)]
        public KEYBDINPUT ki;
        [FieldOffset(4)]
        public MOUSEINPUT mi;
        [FieldOffset(0)]
        public int type;
    }

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

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

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

    [Flags]
    public enum InputType
    {
        INPUT_MOUSE = 0,
        INPUT_KEYBOARD = 1,
        INPUT_HARDWARE = 2
    }

    [Flags]
    public enum KEYEVENTF
    {
        KEYDOWN = 0,
        EXTENDEDKEY = 0x0001,
        KEYUP = 0x0002,
        UNICODE = 0x0004,
        SCANCODE = 0x0008,
    }

    [DllImport("user32.dll", SetLastError = true)]
    public static extern IntPtr GetMessageExtraInfo();
    [DllImport("user32.dll", SetLastError = true)]
    public static extern uint SendInput(uint nInputs, INPUT[] pInputs, int cbSize);