触摸注入后恢复被抑制的光标

问题描述

我正在编写一个帮助程序，用于使用 InjectTouchInput.

I'm writing a helper for injecting touch in UI-tests using InjectTouchInput.

注入的触摸工作正常，但触摸后注入鼠标输入不起作用.

The injected touch works fine but injecting mouse input after touch does not work.

Mouse.Click(point); // works
Touch.Tap(point); // works
Mouse.Click(point); // does not work, mouse cursor no longer visible on screen.

调用 GetCursorInfo() 显示光标是 CURSOR_SUPPRESSED，我还没有找到恢复它的方法.

Calling GetCursorInfo() reveals that cursor is CURSOR_SUPPRESSED and I have not found a way to restore it.

移动物理鼠标会带回光标并且点击工作正常.

Moving the physical mouse brings back the cursor and clicking things work fine.

我怎样才能恢复东西，让鼠标在这里再次工作?

How can I restore things so that mouse works again here?

推荐答案

使用 API SendInput 模拟鼠标输入.

Use the API SendInput to Simulated mouse input.

PInvoke to SendInput – 这是模拟输入的官方方法.它通过所有预期的代码路径推送输入，并且是与真实输入无法区分.

这是代码示例:

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

    [StructLayout(LayoutKind.Sequential)]
    struct INPUT
    {
        public SendInputEventType type;
        public MouseKeybdhardwareInputUnion mkhi;
    }
    [StructLayout(LayoutKind.Explicit)]
    struct MouseKeybdhardwareInputUnion
    {
        [FieldOffset(0)]
        public MouseInputData mi;

        [FieldOffset(0)]
        public KEYBDINPUT ki;

        [FieldOffset(0)]
        public HARDWAREINPUT hi;
    }
    [StructLayout(LayoutKind.Sequential)]
    struct KEYBDINPUT
    {
        public ushort wVk;
        public ushort wScan;
        public uint dwFlags;
        public uint time;
        public IntPtr dwExtraInfo;
    }
    [StructLayout(LayoutKind.Sequential)]
    struct HARDWAREINPUT
    {
        public int uMsg;
        public short wParamL;
        public short wParamH;
    }
    struct MouseInputData
    {
        public int dx;
        public int dy;
        public uint mouseData;
        public MouseEventFlags dwFlags;
        public uint time;
        public IntPtr dwExtraInfo;
    }
    [Flags]
    enum MouseEventFlags : uint
    {
        MOUSEEVENTF_MOVE = 0x0001,
        MOUSEEVENTF_LEFTDOWN = 0x0002,
        MOUSEEVENTF_LEFTUP = 0x0004,
        MOUSEEVENTF_RIGHTDOWN = 0x0008,
        MOUSEEVENTF_RIGHTUP = 0x0010,
        MOUSEEVENTF_MIDDLEDOWN = 0x0020,
        MOUSEEVENTF_MIDDLEUP = 0x0040,
        MOUSEEVENTF_XDOWN = 0x0080,
        MOUSEEVENTF_XUP = 0x0100,
        MOUSEEVENTF_WHEEL = 0x0800,
        MOUSEEVENTF_VIRTUALDESK = 0x4000,
        MOUSEEVENTF_ABSOLUTE = 0x8000
    }
    enum SendInputEventType : int
    {
        InputMouse,
        InputKeyboard,
        InputHardware
    }

    public static void MoveMouseButton(int x, int y)
    {
        INPUT mouseMoveInput = new INPUT();
        mouseMoveInput.type = SendInputEventType.InputMouse;
        mouseMoveInput.mkhi.mi.dwFlags = MouseEventFlags.MOUSEEVENTF_MOVE| MouseEventFlags.MOUSEEVENTF_ABSOLUTE;
        mouseMoveInput.mkhi.mi.dx = x;
        mouseMoveInput.mkhi.mi.dy = y;
        SendInput(1, ref mouseMoveInput, Marshal.SizeOf(new INPUT()));
    }
}

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