说明：  用API控件编程，用鼠标可拖动绘制的小人，键盘方向键也可控制小人移动，并显示其小人坐标和鼠标坐标·
(Programming with API controls, drag with the mouse can be drawn villains, keyboard arrow keys can also be controlled villains mobile, and display the coordinates of its villains and mouse coordinates)