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www.mxdraw.com 
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控件数据库中对象的基本类型,提供与数据库相关操作的通用函数
[ object, uuid(F7A6A7C5-0AAE-40F0-BD99-6DB3B569330D), dual, nonextensible, helpstring("IMxDrawMcDbObject"), pointer_default(unique) ]
interface IMxDrawMcDbObject : IMxDrawMcRxObject;MxDrawMcDbObject.idl