基于MFC的画硬币游戏的实现，单击鼠标右键可选择是增加硬币还是减少硬币，或点击菜单栏上的增加硬币或是减少硬币亦可以。-The realization of draw coins game that based on vc MFC,when you click the right mouse button,you can choose to increase coin or decrease coin,moreover,you can also choose click the menu bar