CAA V6获取CATIMmiPrtContainer_catpathelementagent addelementtype-优快云博客

本文链接：https://blog.youkuaiyun.com/c_I_always/article/details/83181024

本文介绍了一个从CATIPLMNavOccurrence获取机械容器的函数实现，通过迭代器遍历实例，获取代表引用，并切换到编辑模式，最终在3D形状流中检索应用容器。

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//该函数从CATIPLMNavOccurrence中得到Container
HRESULT MyStateCommand::GetMechanicalContainer (CATBaseUnknown * ipOccurrence, CATIMmiPrtContainer ** opiPrtContainer)
{
HRESULT rc = E_INVALIDARG;

   // Check input parameters
   if (NULL != ipOccurrence && NULL != opiPrtContainer)
   {
       // Initializations
       *opiPrtContainer = NULL;
       rc = S_OK;

       // Get iterator on occurences
       CATIPrdIterator * piIteratorOnOccurrence = NULL;
       CATIPLMRepInstances_var spRepInstOnOccurrence = ipOccurrence;
       if (NULL_var != spRepInstOnOccurrence)
           rc = spRepInstOnOccurrence -> Iterator (piIteratorOnOccurrence);
       else rc = E_UNEXPECTED;

       // Get the mechanical container
       CATIMmiPrtContainer * piPrtContainer = NULL;
       if (SUCCEEDED(rc) && NULL != piIteratorOnOccurrence)
       {
           CATBaseUnknown * piBUonRepInstance = NULL;
           if (SUCCEEDED(piIteratorOnOccurrence -> Next(piBUonRepInstance)) && NULL != piBUonRepInstance && NULL == piPrtContainer)
           {
               // Get the representation reference
               CATIPsiRepresentationReference_var spRepReference;
               CATIPLMNavRepReference * piNavRepReference = NULL;
               CATIPLMNavRepInstance_var spNavRepInstance = piBUonRepInstance;
               if (NULL_var != spNavRepInstance)
               {
                   rc = spNavRepInstance -> GetRepReferenceInstanceOf (piNavRepReference);
                   if (SUCCEEDED(rc))
                   {
                       spRepReference = piNavRepReference;
                       if (NULL_var == spRepReference) rc = E_UNEXPECTED;
                   }
               }
               else rc = E_UNEXPECTED;

               // Switch the representation to "EditMode"
               if (SUCCEEDED(rc))
               {
                   CATIPsiRepresentationLoadMode_var spRepresentationLoadMode = spRepReference;
                   if (NULL_var != spRepresentationLoadMode)
                       spRepresentationLoadMode -> ChangeLoadingMode (CATIPsiRepresentationLoadMode::EditMode);
                   else rc = E_UNEXPECTED;
               }

               // Get the mechanical container in the 3DShape stream
               if (SUCCEEDED(rc) && NULL != piNavRepReference)
               {
                   CATUnicodeString usMainDataType;
                   rc = spRepReference -> GetMainDataType(usMainDataType);
                   if (SUCCEEDED(rc) && usMainDataType == "CATPart")
                       rc = piNavRepReference -> RetrieveApplicativeContainer ("CATPrtCont", IID_CATIMmiPrtContainer, (void**) opiPrtContainer);
               }
               if (NULL != piNavRepReference) {piNavRepReference -> Release(); piNavRepReference = NULL;}
           }
       }

if (NULL != piIteratorOnOccurrence) {piIteratorOnOccurrence -> Release(); piIteratorOnOccurrence = NULL;}
}

return rc;
}