L_VecSetActiveLayer
#include "lvkrn.h"
L_LVKRN_API L_INT L_VecSetActiveLayer(pVector, pLayer)
pVECTORHANDLE pVector; |
/* pointer to a vector handle */ |
const pVECTORLAYER pLayer; |
/* pointer to a vector layer */ |
Sets the active layer in the specified vector handle. This function is available in the LEADTOOLS Vector Imaging Pro Toolkit.
Parameter |
Description |
pVector |
Pointer to the vector handle. |
pLayer |
Pointer to the VECTORLAYER structure that references the layer to set as the active layer. |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
Some functions use the active layer when NULL is passed for a pVECTORLAYER parameter. This makes it easier to work with the toolkit when layers are not needed.
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: |
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Topics: |
Example
This example will set the active layer to the one with the given name.
L_INT VecSetActiveLayerExample( pVECTORHANDLE pVector, const L_TCHAR* pszName) { VECTORLAYER Layer; L_INT nRet; /* Get the requested layer */ nRet = L_VecGetLayerByName( pVector, pszName, &Layer ); if( nRet == SUCCESS ) /* Set it as the active layer */ nRet = L_VecSetActiveLayer( pVector, &Layer ); return nRet; }