这是一个用VB编写的程序，通过这个程序能迅速掌握如何对控件功能的扩展-This is a Visual Basic procedure for the adoption of this procedure can be quickly mastered how to control the expansion

msflexgrid 编辑应用，简单事件，与combobox联合运用,msflexgrid editing application, simple events, with the joint use of combobox