LVectorBase::EnumGroups

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#include "lvkrn.h"

virtual L_INT LVectorBase::EnumGroups()

Enumerates all groups inside the class object's associated vector handle.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

The LVectorBase::EnumGroups function calls the LVectorBase::EnumGroupsCallback function as it gets a pointer to each vector group.

To use the LVectorBase::EnumGroupsCallBack function, you must derive a class from LVectorBase and override the LVectorBase::EnumGroupsCallBack member function.

Required DLLs and Libraries

LVKRN

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

See Also

Functions:	LVectorBase::EnumGroupsCallBack
Topics:	Working with Vector Groups

Example

This example enumerates through all groups in a vector.

#ifdef LMyVectorBase5
class LMyVectorBase5: public LVectorBase
{
public:
   L_INT m_nGroupCount ;
public:
   LMyVectorBase5() {m_nGroupCount=0;};
   virtual ~LMyVectorBase5(){};
   virtual L_INT EnumGroupsCallBack(pVECTORHANDLE pVector, pVECTORGROUP pGroup);
};
#endif // #ifdef LMyVectorBase5
L_INT LMyVectorBase5::EnumGroupsCallBack(pVECTORHANDLE pVector, pVECTORGROUP pGroup)
{
   UNREFERENCED_PARAMETER(pVector);
   LVectorGroup VectorGroup(pGroup, this);
   L_TCHAR szMsg[100];
   m_nGroupCount++;
   VECTORGROUPDESC GroupDesc;
   VectorGroup.GetGroupDesc(&GroupDesc);
   wsprintf(szMsg, TEXT("Group\nName[%s]\nSize[%d]"),
      GroupDesc.szName,
      GroupDesc.nSize
      );
   MessageBox(NULL, szMsg, TEXT(""), MB_OK);  
   return SUCCESS ;
   //...LVectorGroup destructor called when VectorGroup goes out of scope
}
L_INT LVectorBase__EnumGroupsExample(HWND hWnd, LMyVectorBase5 *pMyVector)
{
   UNREFERENCED_PARAMETER(hWnd);
   L_INT          nRet;
   LMyVectorBase5 MyVector;
   L_TCHAR        szMsg[100];
   pMyVector->m_nGroupCount=0;
   pMyVector->EnableCallBack(TRUE);
   nRet = pMyVector->EnumGroups();
   if(nRet != SUCCESS)
      return nRet;
   wsprintf(szMsg, TEXT("Total Groups[%d]"), pMyVector->m_nGroupCount);
   MessageBox(NULL, szMsg, TEXT(""), MB_OK);
   return SUCCESS;
}