c# - 我如何在 C# 中模拟 CTRL+C

Question

我有以下代码，在记事本中可以正常工作，但在 WORD 中却不行!!

 [DllImport("user32.dll")]
 public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

 [DllImport("user32.dll")]
 public static extern IntPtr GetForegroundWindow();

 [DllImport("user32.dll", SetLastError = true)]
 public static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);

 [DllImport("kernel32.dll")]
 public static extern uint GetCurrentThreadId();

 [DllImport("user32.dll")]
 public static extern bool AttachThreadInput(uint idAttach, uint idAttachTo, bool fAttach);

 [DllImport("user32.dll")]
 public static extern IntPtr GetFocus();

 [DllImport("user32.dll")]
 public static extern int SendMessage(IntPtr hWnd, uint Msg, int wParam, StringBuilder lParam);

 // second overload of SendMessage
 [DllImport("user32.dll")]
 public static extern int SendMessage(IntPtr hWnd, uint Msg, out int wParam, out int lParam);

 [DllImport("user32.dll")]
 public static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int count);

 public const uint WM_GETTEXT = 0x0D;
 public const uint WM_GETTEXTLENGTH = 0x0E;
 public const uint EM_GETSEL = 0xB0;

        IntPtr hWnd = WinUser.GetForegroundWindow();
        uint processId;
        uint activeThreadId = WinUser.GetWindowThreadProcessId(hWnd, out processId);
        uint currentThreadId = WinUser.GetCurrentThreadId();

        WinUser.AttachThreadInput(activeThreadId, currentThreadId, true);
        IntPtr focusedHandle = WinUser.GetFocus();
        WinUser.AttachThreadInput(activeThreadId, currentThreadId, false);

        int len = WinUser.SendMessage(focusedHandle, WinUser.WM_GETTEXTLENGTH, 0, null);
        StringBuilder sb = new StringBuilder(len);
        int numChars = WinUser.SendMessage(focusedHandle, WinUser.WM_GETTEXT, len + 1, sb);

        int start, next;
        string selectedText = "";
        WinUser.SendMessage(focusedHandle, WinUser.EM_GETSEL, out start, out next);
        try
        {
            selectedText = sb.ToString().Substring(start, next - start);
        }

不幸的是，当在 WORD 或任何“richtextbox”中选择文本时，上述返回“{Microsoft Word Document}”。CTRL+C是怎么做到的？

注意:这在记事本或任何简单的文本编辑器中都可以正常工作。

Answer 1

您要找的是: Copy and Modify selected text in different application