在vc6下实现带有位图项的组合框例子。vc6的组合框没有直接添加图像列表的方法，本例使用其派生类实现添加图像项目的功能。-In vc6 achieve with a bitmap item combo box example. vc6 the combo box there is no direct way to add an image list, in this case the use of its derived classes to add images to achieve the