c# - 模拟 ctrl key down 事件和 ctrl key up 事件后 Ctrl key keep down

Question

我有一个模拟ctr+c & ctr+v的小程序(复制粘贴)使用系统 keybd_event 的事件。问题是程序运行后计算机继续运行，就好像按下 ctrl 键然后 - 如果我键入 a 它会选择整个文档，如果我滚动鼠标滚轮会改变文本面等。它不仅发生在 Visual Studio 编辑器中，而且发生在程序以 Word 等方式运行时打开的任何其他程序中。这是我的代码:

    //The system keyboard event.
    [System.Runtime.InteropServices.DllImport("user32.dll", SetLastError = true)]
    static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo);

    public const int KEYEVENTF_EXTENDEDKEY = 0x0001; //Key down flag
    public const int KEYEVENTF_KEYUP = 0x0002; //Key up flag
    public const int VK_LCONTROL = 0xA2; //Left Control key code
    public const int C = 0x43; // C key code
    public const int V = 0x56; // V key code

    static void Main(string[] args)
    {
        Thread.Sleep(1000);// So I have time to select something.

        //Simulate ctrl+c
        keybd_event(VK_LCONTROL, 0, KEYEVENTF_EXTENDEDKEY, 0);
        keybd_event(C, 0, KEYEVENTF_EXTENDEDKEY, 0);
        keybd_event(C, 0, KEYEVENTF_KEYUP, 0);
        keybd_event(VK_LCONTROL, 0, KEYEVENTF_KEYUP, 0);

        //Simulate ctrl+v
        keybd_event(VK_LCONTROL, 0, KEYEVENTF_EXTENDEDKEY, 0);
        keybd_event(V, 0, KEYEVENTF_EXTENDEDKEY, 0);
        keybd_event(V, 0, KEYEVENTF_KEYUP, 0);
        keybd_event(VK_LCONTROL, 0, KEYEVENTF_KEYUP, 0);
    }

有人知道我该怎么做才能解决这个问题吗？

Answer 1

这是解决方案，这对我来说完全有效。注意发送到 keybd_event 的参数的变化。我用了CodeProject的一篇文章，链接:http://www.codeproject.com/Articles/7305/Keyboard-Events-Simulation-using-keybd-event-funct .这是我修复后的代码:

    //The system keyboard event.
    [System.Runtime.InteropServices.DllImport("user32.dll", SetLastError = true)]
    static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo);
    public const int KEYEVENTF_KEYUP = 0x0002; //Key up flag
    public const int VK_CONTROL = 0x11; //Control key code
    public const int C = 0x43; // C key code
    public const int V = 0x56; // V key code

    static void Main(string[] args)
    {
        Thread.Sleep(1000);// So I have time to select something.

        // Simulating Ctrl+C
        keybd_event(VK_CONTROL, 0x9d, 0, 0); // Ctrl Press
        keybd_event(C, 0x9e, 0, 0); // ‘A’ Press
        keybd_event(C, 0x9e, KEYEVENTF_KEYUP, 0); // ‘A’ Release
        keybd_event(VK_CONTROL, 0x9d, KEYEVENTF_KEYUP, 0); // Ctrl Release

        // Simulating Ctrl+V
        keybd_event(VK_CONTROL, 0x9d, 0, 0); // Ctrl Press
        keybd_event(V, 0x9e, 0, 0); // ‘A’ Press
        keybd_event(V, 0x9e, KEYEVENTF_KEYUP, 0); // ‘A’ Release
        keybd_event(VK_CONTROL, 0x9d, KEYEVENTF_KEYUP, 0); // Ctrl Release
   }

我希望这会对某人有所帮助。感谢所有帮助过我的人!