CATIDescendants_var spSketchDecendents = spiSketch;int iNum1 = spSketchDecendents->GetNumberOfChildren( );for(int i = 1;i<=iNum1;i++){ CATISpecObject_var spObject = spSketchDecendents->GetChildAtPosition(i); CATBoolean bSubType = spObject->IsSubTypeOf("2DOutput"); //是否为输出特征}
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