CAD从二制流数据中加载图形（com接口）

CAD从二制流数据中加载图形（com接口）

主要用到函数说明：_DMxDrawX::ReadBinStream

从二制流数据中加载图形，详细说明如下：

c#代码实现如下：

​​写全局数据​​​​Private Sub writenamedict_Click()​​​​Dim database As MxDrawXLib.MxDrawDatabase​​ ​​Set database = MxDrawX1.GetDatabase​​ ​​Dim nameDict As MxDrawXLib.MxDrawDictionary​​ ​​Set nameDict = database.GetNamedObjectsDictionary​​ ​​Dim myDict As MxDrawXLib.MxDrawDictionary​​ ​​Set myDict = nameDict.AddObject(​​​​"MyDict"​​​​, ​​​​"McDbDictionary"​​​​)​​ ​​Dim xRecord As MxDrawXLib.MxDrawXRecord​​​​Set xRecord = myDict.AddXRecord(​​​​"MyGlobalData"​​​​)​​ ​​If (xRecord Is Nothing) Then​​​​MsgBox ​​​​"向字典中，增加扩展记录失败"​​​​Exit Sub​​​​End If​​ ​​Dim xData2 As MxDrawXLib.MxDrawResbuf​​​​Set xData2 = New MxDrawXLib.MxDrawResbuf​​ ​​xData2.AddLong 99999​​​​xData2.AddDouble 666​​ ​​Set ptTest = New MxDrawXLib.MxDrawPoint​​​​ptTest.x = 77​​​​ptTest.y = -100​​ ​​xData2.AddPoint ptTest​​ ​​xData2.AddString ​​​​"TestApp2"​​​​, 1001​​​​xData2.AddString ​​​​"张三2"​​ ​​xRecord.SetXRecordData2 xData2​​ ​​MsgBox ​​​​"写全局数据成功"​​ ​​End Sub​​​​取全上面写的全局数据​​​​Private Sub readnamedict_Click()​​ ​​Dim database As MxDrawXLib.MxDrawDatabase​​ ​​Set database = MxDrawX1.GetDatabase​​ ​​Dim nameDict As MxDrawXLib.MxDrawDictionary​​ ​​Set nameDict = database.GetNamedObjectsDictionary​​ ​​Dim myDict As MxDrawXLib.MxDrawDictionary​​​​Set myDict = nameDict.GetAt(​​​​"MyDict"​​​​)​​​​If (myDict Is Nothing) Then​​​​MsgBox ​​​​"字典中,没有自定义数据"​​​​Exit Sub​​​​End If​​ ​​Dim xRecord As MxDrawXLib.MxDrawXRecord​​​​Set xRecord = myDict.GetAt(​​​​"MyGlobalData"​​​​)​​ ​​If (xRecord Is Nothing) Then​​​​MsgBox ​​​​"向字典中,没有扩展记录"​​​​Exit Sub​​​​End If​​ ​​Dim data As MxDrawXLib.MxDrawResbuf​​ ​​Set data = xRecord.GetXRecordData2​​ ​​data.PrintData​​ ​​End Sub​​

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