我在做项目时先期做的控件，现在和大家分享下，代码都是在vc2008下面跑的，VC2010也可以跑。还包括窗口继承和多态演示。-I was doing the project early control to do now and share with you, the following code is run in vc2008, VC2010 can also be run. Also include windows inheritance and polymorphism demo.