LVectorLayer::EmptyLayer

#include "ltwrappr.h"

virtual L_INT LVectorLayer::EmptyLayer(L_VOID)

Empties the class object's associated layer. 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 layer is emptied by deleting all objects within that layer.

To delete a layer, call LVectorLayer::DeleteLayer

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::AddLayer, LVectorLayer::DeleteLayer, LVectorBase::CopyLayer, LVectorLayer::AddObject, LVectorBase::CopyObject, LVectorBase::GetLayerByIndex, LVectorBase::GetLayerByName
Topics:	Working with Vector Layers

Example

// This example will empty all objects from the second layer (index 1).
L_VOID Example97(HWND hWnd, LVectorBase *pVector)
{
   LVectorLayer VectorLayer;

   L_INT nRet = pVector->GetLayerByIndex(1, &VectorLayer);
   if (nRet == SUCCESS)
   {
      VectorLayer.EmptyLayer();
   }
   else
   {
      MessageBox(hWnd, TEXT("Vector has less than two layers"), TEXT(""), MB_OK);
   }
}