L_VecEmptyLayer

#include "lvkrn.h"

L_INT EXT_FUNCTION L_VecEmptyLayer(pVector, pLayer)

pVECTORHANDLE pVector;	/* pointer to a vector handle */
const pVECTORLAYER pLayer;	/* pointer to a vector layer */

Empties the specified layer. This function is available in the LEADTOOLS Vector Imaging Pro Toolkit.

Parameter	Description
pVector	Pointer to the vector handle.
pLayer	Pointer to a VECTORLAYER structure that references the layer to be emptied.

Returns

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

Comments

The specified layer is emptied by deleting all objects within that layer.

To delete a layer, call L_VecDeleteLayer.

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:	L_VecAddLayer, L_VecDeleteLayer, L_VecCopyLayer, L_VecAddObject, L_VecCopyObject, L_VecGetLayer, L_VecGetLayerByIndex, L_VecGetLayerByName
Topics:	Working with Vector Layers

Example

/* This example will delete all objects inside the layer with the given name */
L_VOID EmptyLayerByName( pVECTORHANDLE pVector, L_TCHAR *pszName )
{
   VECTORLAYER Layer;
   L_INT       nRet;

   /* Get the layer with the given name */
   nRet = L_VecGetLayerByName( pVector, pszName, &Layer );
   if( SUCCESS == nRet )
      L_VecEmptyLayer( pVector, &Layer );  /* empty out */
}