对CComboBox的自绘，重载了DrawItem和MeasureItem，实现了图标的绘制，是ComboBox自绘比较典型的例子 关键词：CComoBox,自绘，图标-Self-painted on CComboBox, overloaded DrawItem and MeasureItem, is drawn from the ComboBox typical example Keywords: CComoBox, since the painting, icon

原组合框只能显示文本信息，不能显示颜色和图形。通过自定义组合框控件，改写DrawItem虚方法，实现根据项目的状态，绘制相应效果的颜色和文本的功能-ComboBox with Color Display

list小案例，功能小巧，可以参考，作为小案例使用，欢迎改正-list of small stories, features small, you can refer to, to use as a small case, welcome to correct