L_VecEmptyLayer

#include "lvkrn.h"

L_LVKRN_API L_INT 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.

Example

This example will delete all objects inside the layer with the given name.

L_INT VecEmptyLayerExample( 
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 ) 
      nRet = L_VecEmptyLayer( pVector, &Layer );  /* empty out */ 
   return nRet; 
}

Help Version 19.0.2017.10.27

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LEADTOOLS Vector C API Help

Introduction

Version History

LEADTOOLS Vector Features

Redistributables/Files To Be Included With Your Application

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