Following code allows you to set mouse coordinates to a given (x,y).
private void SetMousePosition(int x, int y) { MOIS.MouseState_NativePtr msnp = this.inputMouse.MouseState; MOIS.Axis_NativePtr anp = msnp.X; anp.abs = x; anp = msnp.Y; anp.abs = y; GuiManager.Singleton.InputManager.InjectMouseMoved(x, y, false); }