这个一个VB写的类似QQ的窗体 以前是把他和AUTOCAD一起组合的，它窗体总在最前！-This was similar to a VB form QQ ago to join him and AUTOCAD portfolio, which form the total in the former!

将AUTOCAD放入C# 窗口中。小练手不是很完美，原来是用VB.net写的-AUTOCAD into the C# window. Small practiced hand is not perfect, was originally written in VB.net