LVectorGroup::EmptyGroup

#include "ltwrappr.h"

virtual L_INT LVectorGroup::EmptyGroup()

Empties the class object's associated group. This function is available in the LEADTOOLS Vector Imaging Pro Toolkit.

Returns

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

Comments

The associated group is emptied by deleting all objects within that group.

To delete a group, call LVectorGroup::DeleteGroup.

After calling this function, all clone objects of this group will reflect the change immediately.

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.

Example

This example will empty all objects from the second group (index 1).

L_INT LVectorGroup__EmptyGroupExample(HWND hWnd, LVectorBase *pVector) 
{ 
   L_INT          nRet; 
   LVectorGroup   VectorGroup; 
   nRet = pVector->GetGroupByIndex(1, &VectorGroup); 
   if (nRet == SUCCESS) 
   { 
      nRet = VectorGroup.EmptyGroup(); 
      if(nRet != SUCCESS) 
         return nRet; 
   } 
   else 
   { 
      MessageBox(hWnd, TEXT("Vector has less than two groups"), TEXT(""), MB_OK); 
      return nRet; 
   } 
   return SUCCESS; 
}

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LEADTOOLS Vector C++ Class Library Help

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Appendix

Functions:	LVectorBase::AddGroup, LVectorGroup::DeleteGroup, LVectorBase::CopyGroup, LVectorGroup::DeleteGroupClones, LVectorBase::GetGroupByIndex, LVectorBase::GetGroupByName
Topics:	Working with Vector Groups