用vb写的CombboxGrid控件源码，是vb标准控件Combbox的扩展，点击下拉列表即可看到效果，写的不错，掌握了核心要领和思路，就可以自定义其它的网格控件。-Using vb to write CombboxGrid source control, is standard controls Combbox vb extension, click the drop-down list to see the effect, write well, mastered the core esse