物体弹跳的例子，演示了让图片透明的方法。用vb来实现。-objects bouncing example, demonstrated the picture so transparent way. Vb used to be achieved.

基于GDI+开发的透明按钮！可以加载PNG图片，唯一的缺点在于无法半透明！-MFC png buttons, personality guarantees fully available, usage, see the source code, we know that so I do not take test engineering