Question

使用WPF的内置UI自动化，将左键单击事件发送到AutomationElement（例如Button）很容易（尽管非常详细）：

InvokePattern invokePattern = (InvokePattern) element.GetCurrentPattern(InvokePattern.Pattern);
invokePattern.Invoke();

但是，似乎没有内置方式向同一元素发送右键单击。我已经辞职了，使用P / Invoke来调用SendInput，但是我无法让它工作。使用下面的代码，当我调用RightClick（）时，会在光标所在的位置弹出一个上下文菜单，而不是在我希望右键单击的元素上。因此，它似乎忽略了我提交的坐标并仅使用当前光标位置。

public static void RightClick(this AutomationElement element)
{
    Point p = element.GetClickablePoint();

    NativeStructs.Input input = new NativeStructs.Input
    {
        type = NativeEnums.SendInputEventType.Mouse,
        mouseInput = new NativeStructs.MouseInput
        {
            dx = (int) p.X,
            dy = (int) p.Y,
            mouseData = 0,
            dwFlags = NativeEnums.MouseEventFlags.Absolute | NativeEnums.MouseEventFlags.RightDown,
            time = 0,
            dwExtraInfo = IntPtr.Zero,
        },
    };

    NativeMethods.SendInput(1, ref input, Marshal.SizeOf(input));

    input.mouseInput.dwFlags = NativeEnums.MouseEventFlags.Absolute | NativeEnums.MouseEventFlags.RightUp;

    NativeMethods.SendInput(1, ref input, Marshal.SizeOf(input));
}

internal static class NativeMethods
{
    [DllImport("user32.dll", SetLastError = true)]
    internal static extern uint SendInput(uint nInputs, ref NativeStructs.Input pInputs, int cbSize);
}

internal static class NativeStructs
{
    [StructLayout(LayoutKind.Sequential)]
    internal struct Input
    {
        public NativeEnums.SendInputEventType type;
        public MouseInput mouseInput;
    }

    [StructLayout(LayoutKind.Sequential)]
    internal struct MouseInput
    {
        public int dx;
        public int dy;
        public uint mouseData;
        public NativeEnums.MouseEventFlags dwFlags;
        public uint time;
        public IntPtr dwExtraInfo;
    }
}

internal static class NativeEnums
{
    internal enum SendInputEventType : int
    {
        Mouse = 0,
        Keyboard = 1,
        Hardware = 2,
    }

    [Flags]
    internal enum MouseEventFlags : uint
    {
        Move = 0x0001,
        LeftDown = 0x0002,
        LeftUp = 0x0004,
        RightDown = 0x0008,
        RightUp = 0x0010,
        MiddleDown = 0x0020,
        MiddleUp = 0x0040,
        XDown = 0x0080,
        XUp = 0x0100,
        Wheel = 0x0800,
        Absolute = 0x8000,
    }
}

Answer 1

根据我的理解，你对于模拟右键单击UIA元素所必需的SendInput是正确的。

关于如何在右键单击之前强制光标移动到元素，您可以尝试将MOUSEEVENTF_MOVE标志添加到dwFlags。

如果仍然不起作用，也许尝试两次调用SendInput - 一次移动鼠标（使用“dwFlags = MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE”），第二次执行右键单击您现在正在执行的操作。

另外，你见过这个项目吗？

http://inputsimulator.codeplex.com/

目前还不确定鼠标输入支持的完整程度，但它可能很有用。

此外，这个问题也许有用：

using mouse with sendInput in C

Answer 2

MSDN说：

如果指定了MOUSEEVENTF_ABSOLUTE值，则dx和dy包含0到65,535之间的标准化绝对坐标。事件过程将这些坐标映射到显示表面上。坐标（0,0）映射到显示表面的左上角;坐标（65535,65535）映射到右下角。在多监视器系统中，坐标映射到主监视器。

这意味着你不能只使用p.X和p.Y.你需要像这样标准化它，例如：

var virtualScreen = System.Windows.Forms.SystemInformation.VirtualScreen;
Int32 x = Convert.ToInt32((p.X - virtualScreen.Left) * 65536 / virtualScreen.Width);
Int32 y = Convert.ToInt32((p.Y - virtualScreen.Top) * 65536 / virtualScreen.Height);

并且您需要将其与MOUSEEVENTF_VIRTUALDESK标志一起使用。

Answer 3

如果您从控件派生，则可以使用以下内容：

var e = new MouseButtonEventArgs(Mouse.PrimaryDevice, 0, MouseButton.Right);
e.RoutedEvent = Mouse.MouseDownEvent;
this.OnMouseDown(e);

Answer 4

我检查了所有答案并编制了最终的工作解决方案。

public static void RightClick(this AutomationElement element)
{
    Point p = element.GetClickablePoint();

    NativeStructs.Input input = new NativeStructs.Input
    {
        type = NativeEnums.SendInputEventType.Mouse,
        mouseInput = new NativeStructs.MouseInput
        {
            dx = 0,
            dy = 0,
            mouseData = 0,
            dwFlags = NativeEnums.MouseEventFlags.Absolute | NativeEnums.MouseEventFlags.RightDown | NativeEnums.MouseEventFlags.Move,
            time = 0,
            dwExtraInfo = IntPtr.Zero,
        },
    };

        var primaryScreen = Screen.PrimaryScreen;
        input.mouseInput.dx = Convert.ToInt32((p.X - primaryScreen.Bounds.Left) * 65536 / primaryScreen.Bounds.Width);
        input.mouseInput.dy = Convert.ToInt32((p.Y - primaryScreen.Bounds.Top) * 65536 / primaryScreen.Bounds.Height);
    NativeMethods.SendInput(1, ref input, Marshal.SizeOf(input));
    input.mouseInput.dwFlags = NativeEnums.MouseEventFlags.Absolute | NativeEnums.MouseEventFlags.RightUp | NativeEnums.MouseEventFlags.Move;
    NativeMethods.SendInput(1, ref input, Marshal.SizeOf(input));
}

internal static class NativeMethods
{
    [DllImport("user32.dll", SetLastError = true)]
    internal static extern uint SendInput(uint nInputs, ref NativeStructs.Input pInputs, int cbSize);
}

internal static class NativeStructs
{
    [StructLayout(LayoutKind.Sequential)]
    internal struct Input
    {
        public NativeEnums.SendInputEventType type;
        public MouseInput mouseInput;
    }

    [StructLayout(LayoutKind.Sequential)]
    internal struct MouseInput
    {
        public int dx;
        public int dy;
        public uint mouseData;
        public NativeEnums.MouseEventFlags dwFlags;
        public uint time;
        public IntPtr dwExtraInfo;
    }
}

internal static class NativeEnums
{
    internal enum SendInputEventType : int
    {
        Mouse = 0,
        Keyboard = 1,
        Hardware = 2,
    }

    [Flags]
    internal enum MouseEventFlags : uint
    {
        Move = 0x0001,
        LeftDown = 0x0002,
        LeftUp = 0x0004,
        RightDown = 0x0008,
        RightUp = 0x0010,
        MiddleDown = 0x0020,
        MiddleUp = 0x0040,
        XDown = 0x0080,
        XUp = 0x0100,
        Wheel = 0x0800,
        Absolute = 0x8000,
    }
}

如何使用WPF的UI自动化向AutomationElement发送右键单击事件？

4 个答案: