How can I send a right-click event to an AutomationElement using automation WPF UI?

Question

Using the built-in automation of the WPF user interface, it is easy (although quite a lot) to send a left-click event to an AutomationElement element (for example, a button):

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

However, there seems to be no built-in way to send right clicks to the same element. I put up with using P / Invoke to call SendInput , but I can't get it to work. With the code below, when I call RightClick (), the context menu appears right where the cursor is, and not in the element that I assume will be right-clicked. Thus, it seems that it ignores the coordinates that I use, and just uses the current cursor location.

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

From what I understand, you are correct in that SendInput is necessary to simulate a right-click on an UIA element.

, , MOUSEEVENTF_MOVE dwFlags.

, SendInput - , ( "dwFlags = MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE" ), , , .

?

http://inputsimulator.codeplex.com/

, , .

, :

sendInput C

Answer 2

MSDN :

MOUSEEVENTF_ABSOLUTE, dx dy 0 65535. . (0,0) ; (65535,65535) . .

, p.X p.Y. , :

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);

MOUSEEVENTF_VIRTUALDESK.

Answer 3

, :

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

Answer 4

.

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.WorkingArea.Left) * 65536 / primaryScreen.WorkingArea.Width);
        input.mouseInput.dy = Convert.ToInt32((p.Y - primaryScreen.WorkingArea.Top) * 65536 / primaryScreen.WorkingArea.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,
    }
}