你会了解到VC++位图拉伸与背景叠加方面的应用示例，普通风格：没有背景显示，以位图作为背景，以指定颜色作为背景，学习使用位图拉伸作为背景、位图平铺等方式，同时还将了解构造函数重载，分别设置和获得背景显示风格、背景颜色和位图显示风格，背景图的CDib类指针等方面的知识。

-You will learn VC++ background bitmap drawing and the application stack example, the general style: no background shows that as a background bitmap to the specified color as the background, learning to use drawing as a background bitmap, bitmap tiling, etc. way, and will also understand the constructor overload, respectively, set and get the background display style, background color, and bitmap display style, background image CDib class pointer and other aspects of knowledge.