c#模拟鼠标左键单击

 [System.Runtime.InteropServices.DllImport("user32.dll")]
        private static extern int mouse_event(int dwFlags, int dx, int dy, int cButtons, int dwExtraInfo);
        const int MOUSEEVENTF_MOVE = 0x0001;
        const int MOUSEEVENTF_LEFTDOWN = 0x0002;
        const int MOUSEEVENTF_LEFTUP = 0x0004;
        const int MOUSEEVENTF_RIGHTDOWN = 0x0008;
        const int MOUSEEVENTF_RIGHTUP = 0x0010;
        const int MOUSEEVENTF_MIDDLEDOWN = 0x0020;
        const int MOUSEEVENTF_MIDDLEUP = 0x0040;
        const int MOUSEEVENTF_ABSOLUTE = 0x8000;

以下是调用代码：

mouse_event(MOUSEEVENTF_MOVE, 200, 0, 0, 0);
mouse_event(MOUSEEVENTF_LEFTDOWN, 1, 0, 0, 0);
mouse_event(MOUSEEVENTF_LEFTUP, 1, 0, 0, 0);

上面代码的移动鼠标会有点问题，这个不是绝对的坐标。以下代码是绝对坐标

声明：

[DllImport("User32.dll")]
private static extern bool SetCursorPos(int x, int y);

调用：

SetCursorPos(100, 200);