TOOLBAR上创建COMBO，可以在工具栏的空白处动态创建控件，如combo，edit等-TOOLBAR create lighter, in the toolbar to create a dynamic space controls, such as combo, edit, etc.

MFC列表框内嵌组合框控件，实现ComboBox与EditBox，动态创建Combobox控件，ListCtrl, ListHeadCtrl, Custom, checkbox, radio, combobox, progress, MFC, C++(The MFC list box is embedded with a combo box control. It implements ComboBox and EditBox, dyn