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LVectorBase::GetGroupCount

Summary

Returns the number of groups inside the vector handle.

Syntax

#include "ltwrappr.h"

virtual L_INT LVectorBase::GetGroupCount()

Returns

Number of groups.

Comments

After calling this function, LVectorBase::GetGroupByIndex can be used to iterate through the groups in a vector handle.

Required DLLs and Libraries

LTVKRN
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Example

This example will copy the first group (and objects) from a vector into pVector.

L_INT LVectorBase__GetGroupCountExample(HWND hWnd, LVectorBase *pVector) 
{ 
   L_TCHAR        szMsg[100]; 
   LVectorGroup   VectorGroup; 
   L_INT          nRet, nCount; 
 
   //Load a source vector 
   LVectorBase VectorSrc; 
   nRet = VectorSrc.Load(MAKE_IMAGE_PATH(TEXT("group.vec"))); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   nCount = VectorSrc.GetGroupCount (); 
   if (nCount > 0) 
   { 
      //Get first group of source 
      nRet = VectorSrc.GetGroupByIndex(0, &VectorGroup); 
      if (nRet == SUCCESS) 
      { 
         //Get the name of the first group. 
         VECTORGROUPDESC GroupDesc; 
         nRet = VectorGroup.GetGroupDesc(&GroupDesc); 
         if(nRet != SUCCESS) 
            return nRet; 
         wsprintf(szMsg, TEXT("Group Retrieved\nName[%s]"),GroupDesc.szName);  
         MessageBox(hWnd, szMsg, TEXT(""), MB_OK); 
          
         //Create new group in destination vector 
         LVectorGroup NewVectorGroup(&GroupDesc); 
         nRet = pVector->AddGroup(&NewVectorGroup); 
         if(nRet != SUCCESS) 
            return nRet; 
          
         //Copy group and objects into pVector active group 
         nRet = pVector->CopyGroup(&NewVectorGroup, &VectorGroup); 
         if(nRet != SUCCESS) 
            return nRet; 
 
         nRet = pVector->Save(MAKE_IMAGE_PATH(TEXT("erase2.vec")), FILE_VECTOR_DUMP); 
         if(nRet != SUCCESS) 
            return nRet; 
      } 
      else 
         return nRet; 
   } 
   else 
   { 
      MessageBox(hWnd, TEXT("No groups in source"), TEXT(""), MB_OK); 
   } 
 
   return SUCCESS; 
}