c# - Keybd_event 下划线提供错误的输出

Question

我创建了一个模拟键盘事件的小程序，用于在 Oracle 中填充数据，但是当我使用 keybd_event 引入字符下划线时，输出是错误的如果 _ 不是最后一个字符，当程序模拟下一个字符时自动添加字符 -例子我需要录音 09_80对于下划线，我使用 VK_RSHIFT 和 VK_OEM_MINUS 的组合输出为 09_-80

有人可以帮助我吗？我也尝试过使用 InputSimulator，但它只在 Windows 8 上正常运行

下面是我程序中的一些代码行，提前致谢最好的问候

//键盘操作

    [DllImport("user32.dll", SetLastError = true)]
    public static extern void keybd_event(int bVk, int bScan, int dwFlags, int dwExtraInfo);

    [DllImport("user32.dll")]
    public static extern int MapVirtualKey(int uCode, int uMapType);

    [DllImport("user32.dll", CharSet = CharSet.Unicode)]
    public static extern short VkKeyScan(char ch);

    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    public static extern string SendMessage(IntPtr hWnd, int msg, string wParam, IntPtr lParam);

    public const int KEYEVENTF_EXTENDEDKEY = 0x0001;


    public const int KEYEVENTF_KEYUP = 0x0002; 

//发送字符

    public static void SendChar(char c)
    {
        if (bw.CancellationPending)
        {
            return;
        }  
        if(c=='_')
        {


            keysPress(VK_RSHIFT,VK_OEM_MINUS)
        }

        int vk = VkKeyScan(c);
        int sc = MapVirtualKey(vk, 0);
        PressKeyDn(vk, sc);
        ReleaseKeyUp(vk, sc);


    }

    //SEND STRING
    public static void SendString(string s)
    {

            foreach (char c in s)
            {
                SendChar(c);
            }

    }

    //PRESS KEY DOWN
    public static void PressKeyDn(int VK_Code, int SC_Code)
    {
        keybd_event(VK_Code, SC_Code, 0, 0);
    }

    //RELEASE KEY UP
    public static void ReleaseKeyUp(int VK_Code, int SC_Code)
    {
        keybd_event(VK_Code, SC_Code, KEYEVENTF_KEYUP, 0);
    }

    //Press Special Key
    public static void keyPress(int VK_key)
    {
        if (bw.CancellationPending)
        {
            return;
        }  
        int sc = MapVirtualKey(VK_key, 0);
        PressKeyDn(VK_key, sc);
        ReleaseKeyUp(VK_key, sc);

    }

    //Press Special Key Combination 2 keys
    public static void keysPress(int VK_Key1,int VK_Key2)
    {
        if (bw.CancellationPending)
        {
            return;
        }  
        int sc1 = MapVirtualKey(VK_Key1, 0);
        int sc2 = MapVirtualKey(VK_Key2, 0);
        PressKeyDn(VK_Key1, sc1);
        PressKeyDn(VK_Key2, sc2);
        ReleaseKeyUp(VK_Key2, sc2);
        ReleaseKeyUp(VK_Key1, sc1);

    }

    //Press Special Key Combination 3 keys
    public static void keysPress(int VK_Key1, int VK_Key2,int VK_Key3)
    {
        if (bw.CancellationPending)
        {
            return;
        }  
        int sc1 = MapVirtualKey(VK_Key1, 0);
        int sc2 = MapVirtualKey(VK_Key2, 0);
        int sc3 = MapVirtualKey(VK_Key3, 0);
        PressKeyDn(VK_Key1, sc1);
        PressKeyDn(VK_Key2, sc2);
        PressKeyDn(VK_Key3, sc3);
        ReleaseKeyUp(VK_Key3, sc3);
        ReleaseKeyUp(VK_Key2, sc2);
        ReleaseKeyUp(VK_Key1, sc1);
    }

Answer 1

好的，经过一些测试，我发现了问题所在，并已修复。_(下划线)表示第二行语句的延续，因此下一个字符以 - 开头。我已经解决了这个问题，通过这种方式从方法中排除了下一个字符。

public static void SendChar(char c)
    {
        bool und = false;
        if (c == '_')
        {
            und = true;
        }
        int vk = BMDLCommands.VkKeyScan(c);
        int sc = BMDLCommands.MapVirtualKey(vk, 0);
        if(und)
        {
            keysPress(VK_SHIFT, VK_OEM_MINUS);
            MethodInvoker met = delegate
            {
                keyPress(vk);
            };
        }
        else
        {
            BMDLCommands.PressKeyDn(vk, sc);
            BMDLCommands.ReleaseKeyUp(vk, sc);
        }
    }

现在输出完全正确。非常感谢您的帮助