为了模拟鼠标移动、按钮点击等，您可以尝试mouse_event API函数。注意，它只适用于 mickeys 而不是 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 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);