References ▼
L_LVKRN_API L_INT L_VecCopyLayer(pVectorDst, pLayerDst, pVectorSrc, pLayerSrc, dwFlags)
Copies the contents of one layer to another. This function is available in the LEADTOOLS Vector Imaging Pro Toolkit.
Pointer to the destination vector handle.
Pointer to a VECTORLAYER structure that references the destination layer.
Pointer to the source vector handle.
Pointer to a VECTORLAYER structure that references the source layer.
Flag that indicates whether or not to empty the destination layer before copying. Possible values are:
| Value | Meaning |
|---|---|
| 0 | Do not empty the destination layer before copying. |
| VECTOR_FLAGS_REPLACE | Empty the destination layer before copying. |
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
The destination layer can be in the same vector handle as the source layer, or it can be in a different vector handle.
Required DLLs and Libraries
This example will copy the layer with the given name from the source vector to the destination vector.
L_LTVKRNTEX_API L_INT VecCopyLayerExample(pVECTORHANDLE pVectorDst,pVECTORHANDLE pVectorSrc,L_TCHAR* pszName){VECTORLAYER LayerSrc, LayerDst;VECTORLAYERDESC LayerDesc;L_INT nRet;/* Get the layer with the given name */nRet = L_VecGetLayerByName( pVectorSrc, pszName, &LayerSrc );if( nRet == SUCCESS ){/* get the layer properties */nRet = L_VecGetLayer( pVectorSrc, &LayerSrc, &LayerDesc );if(nRet != SUCCESS)return nRet;/* add to the destination vector */nRet = L_VecAddLayer( pVectorDst, &LayerDesc, &LayerDst, VECTOR_FLAGS_RENAME_DUPLICATES);if(nRet != SUCCESS)return nRet;/* no need for the layer properties anymore */nRet = L_VecFreeLayer( &LayerDesc );if(nRet != SUCCESS)return nRet;/* copy content of source layer into destination */nRet = L_VecCopyLayer( pVectorDst, &LayerDst, pVectorSrc, &LayerSrc, 0L );}return nRet;}