L_VecAddLayer

#include "lvkrn.h"

L_INT EXT_FUNCTION L_VecAddLayer(pVector, pLayerDesc, pLayer, dwFlags)

pVECTORHANDLE pVector;	/* pointer to a vector handle */
const pVECTORLAYERDESC pLayerDesc;	/* pointer to a structure */
pVECTORLAYER pLayer;	/* pointer to a vector layer */
L_UINT32 dwFlags;	/* flags */

Adds a new empty layer to a vector handle.

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

Parameter	Description
pVector	Pointer to the vector handle.
pLayerDesc	Pointer to a VECTORLAYERDESC structure that contains the new layer settings.
pLayer	Pointer to a VECTORLAYER structure to be updated with the handle of the new layer.
dwFlags	Flag that indicates whether or not to rename duplicate layer names. Possible values are:
	Value	Meaning
	0	Don't rename duplicate layer names, if found.
	VECTOR_FLAGS_RENAME_DUPLICATES	Renames duplicate layer names if found. The toolkit will add a suffix (0, 1, 2, etc) to the layer name if duplicated. Checking will be aborted when the suffix value reaches 999 and no unique name can be created.

Returns

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

Comments

For more information on the layer settings, refer to the VECTORLAYERDESC structure.

To change layer settings, get the current layer settings by calling L_VecGetLayer, set the new settings in the VECTORLAYERDESC structure pointed to by pLayerDesc and then set the new layer settings by calling L_VecSetLayer.

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_VecDeleteLayer, L_VecGetLayer, L_VecSetLayer, L_VecGetLayerByName, L_VecGetLayerByIndex, L_VecCopyLayer, L_VecEmptyLayer, L_VecSetActiveLayer, L_VecGetActiveLayer, L_VecEmptyLayer, L_VecFreeLayer
Topics:	Working with Vector Layers

Example

/* This example will add a new layer to a vector handle */
L_VOID AddMyLayer( pVECTORHANDLE pVector )
{
   VECTORLAYERDESC   LayerDesc;
   VECTORLAYER       Layer;

   LayerDesc.nSize = sizeof( VECTORLAYERDESC );
   lstrcpy( LayerDesc.szName, TEXT("My Layer"));
   LayerDesc.bVisible = TRUE;
   LayerDesc.bLocked = FALSE;
   LayerDesc.dwTag = 0L;

   if( SUCCESS != L_VecAddLayer( pVector, &LayerDesc, &Layer, VECTOR_FLAGS_RENAME_DUPLICATES ) )
   {
      MessageBox( NULL, TEXT("Could not add layer!"), NULL, MB_OK );
   }
}