Simulate mouse move

Question

I have ListView with Images in my UserControl. When I am bringing the picture I have is redraw the picture when removing the mouse from the image picture nourish old. But when I

Answer 1

In order to simulate mouse moves, its buttons' clicks etc. you may try mouse_event API function. Be careful, it works with mickeys not pixels:

http://msdn.microsoft.com/en-us/library/windows/desktop/ms646260(v=vs.85).aspx

    [DllImport("User32.dll",
               EntryPoint = "mouse_event",
               CallingConvention = CallingConvention.Winapi)]
    internal static extern void Mouse_Event(int dwFlags,
                                            int dx,
                                            int dy,
                                            int dwData,
                                            int dwExtraInfo);

    [DllImport("User32.dll",
               EntryPoint = "GetSystemMetrics",
               CallingConvention = CallingConvention.Winapi)]
    internal static extern int InternalGetSystemMetrics(int value);

   ...

   // Move mouse cursor to an absolute position to_x, to_y and make left button click:
   int to_x = 500;
   int to_y = 300;

   int screenWidth = InternalGetSystemMetrics(0);
   int screenHeight = InternalGetSystemMetrics(1);

   // Mickey X coordinate
   int mic_x = (int) System.Math.Round(to_x * 65536.0 / screenWidth);
   // Mickey Y coordinate
   int mic_y = (int) System.Math.Round(to_y * 65536.0 / screenHeight);

   // 0x0001 | 0x8000: Move + Absolute position
   Mouse_Event(0x0001 | 0x8000, mic_x, mic_y, 0, 0);
   // 0x0002: Left button down
   Mouse_Event(0x0002, mic_x, mic_y, 0, 0);
   // 0x0004: Left button up
   Mouse_Event(0x0004, mic_x, mic_y, 0, 0);