用C写的小球弹跳小游戏，显示一个小球在窗体里弹动的效果。非常好看！-Written using C ball bouncing game, showing a small ball is in the form where the effect of moving shells. Very good-looking!

GDI实现的一个好看的时钟，实现不规则透明窗体。-GDI achieved a nice clock and realize irregular transparent form.