说明：  需要GDI+支持的MFC按钮类。自绘图片按钮，支持各种透明效果，可添加文字，支持普通、焦点、鼠标经过、鼠标按下、选中、不可用6种状态不同图片显示
(Need to support GDI+ MFC button class. Since the paint picture buttons, supports a variety of transparency effects, you can add text, to support general, focus, mouse after mouse click, select, not the state with 6 different picture show)