I'm writing a helper for injecting touch in UI-tests using InjectTouchInput.
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.
Calling GetCursorInfo()
reveals that cursor is CURSOR_SUPPRESSED
and I have not found a way to restore it.
Moving the physical mouse brings back the cursor and clicking things work fine.
How can I restore things so that mouse works again here?
Use the API SendInput
to Simulated mouse input.
PInvoke to SendInput – this is the official way to simulate input. It pushes the input through all of the expected code paths, and is indistinguishable from real input.
Here is the code sample:
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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