Question

我尝试使用将线程输入附加到另一个线程的组合，并设置键状态以发送 shift + a 组合（{{1} }）到记事本。问题是，下面的代码打印A而不是a。

我已经尝试调试代码并按下 shift ，同时单步执行断点，并且在按住shift时效果很好。所以我知道线程附件正在工作。

所以看起来A命令似乎不起作用。我做错了什么？

以下是代码：

SetKeyboardState(...)

更新

发布四个命令：

    [DllImport("user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    static extern bool GetKeyboardState(byte[] lpKeyState);

    [DllImport("user32.dll")]
    static extern bool SetKeyboardState(byte[] lpKeyState);

    public static void simKeyPressWithModifier(IntPtr winHandle)
    {
        uint threadId = User32.GetWindowThreadProcessId(winHandle, IntPtr.Zero);
        byte[] keys = new byte[256];

        if (!GetKeyboardState(keys))
        {
            int err = Marshal.GetLastWin32Error();
            throw new Win32Exception(err);
        }
        User32.AttachThreadInput((uint)AppDomain.GetCurrentThreadId(), threadId, true);

        int sKey = (int)VK.VK_LSHIFT;
        keys[sKey] = 0xFF;


        if (!SetKeyboardState(keys))
        {
            int err = Marshal.GetLastWin32Error();
            throw new Win32Exception(err);
        }

        User32.PostMessage(winHandle, WM.WM_KEYDOWN, (IntPtr)Keys.A, IntPtr.Zero);

        keys[sKey] = 0;
        if (!SetKeyboardState(keys))
        {
            int err = Marshal.GetLastWin32Error();
            throw new Win32Exception(err);
        }
        User32.AttachThreadInput((uint)AppDomain.GetCurrentThreadId(), threadId, false);
    }

结果为两个小写的public static void simKeyPressWithModifier(IntPtr winHandle) { User32.PostMessage(winHandle, WM.WM_KEYDOWN, (IntPtr)VK.VK_LSHIFT, IntPtr.Zero); User32.PostMessage(winHandle, WM.WM_KEYDOWN, (IntPtr)Keys.A, IntPtr.Zero); User32.PostMessage(winHandle, WM.WM_KEYUP, (IntPtr)Keys.A, IntPtr.Zero); User32.PostMessage(winHandle, WM.WM_KEYUP, (IntPtr)VK.VK_LSHIFT, IntPtr.Zero); }。

如果我a代替SendMessage，则根本不显示任何内容：

PostMessage

在C＃中使用Windows 8.1上的.NET Framework 4。

我如何获得上下文句柄：

    public static void simKeyPressWithModifier(IntPtr winHandle)
    {

        User32.SendMessage(winHandle, WM.WM_KEYDOWN, (IntPtr)VK.VK_LSHIFT, IntPtr.Zero);
        User32.SendMessage(winHandle, WM.WM_KEYDOWN, (IntPtr)Keys.A, IntPtr.Zero);
        User32.SendMessage(winHandle, WM.WM_KEYUP, (IntPtr)Keys.A, IntPtr.Zero);
        User32.SendMessage(winHandle, WM.WM_KEYUP, (IntPtr)VK.VK_LSHIFT, IntPtr.Zero);

    }

SetKeyboardState在Windows 8中不起作用

我如何获得上下文句柄：

0 个答案: