#include "ltwrappr.h"
virtual L_INT LVectorBase::CopyLayer(pVectorLayerDst, pVectorLayerSrc, dwFlags=0);
Copies the contents of one layer to another.
This function is available in the LEADTOOLS Vector Imaging Pro Toolkit.
Pointer to an LVectorLayer object that points to the destination layer. Pass NULL to copy the source vector layer into the active layer.
Pointer to an LVectorLayer object that points to the source layer. This parameter cannot be NULL.
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.
An LVectorLayer object can be obtained by calling LVectorBase::EnumLayers, LVectorBase::GetLayerByName or LVectorBase::GetLayerByIndex.
Required DLLs and Libraries
This example will copy the first layer (and objects) from a vector into the active layer of pVector.
L_INT LVectorBase__CopyLayerExample(HWND hWnd, LVectorBase *pVector)
{
UNREFERENCED_PARAMETER(hWnd);
L_INT nRet;
LVectorLayer VectorLayer;
//Load a source vector
LVectorBase VectorSrc;
nRet = VectorSrc.Load(MAKE_IMAGE_PATH(TEXT("random.dxf")));
if(nRet != SUCCESS)
return nRet;
//Get first layer of source
nRet = VectorSrc.GetLayerByIndex(0, &VectorLayer);
if(nRet != SUCCESS)
return nRet;
//Copy layer and objects into pVector active layer
nRet = pVector->CopyLayer(NULL, &VectorLayer);
if(nRet != SUCCESS)
return nRet;
return SUCCESS;
}
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