L_VecGetLayerCount
#include "lvkrn.h"
L_INT EXT_FUNCTION L_VecGetLayerCount(pVector)
const pVECTORHANDLE pVector; |
/* pointer to a vector handle */ |
Returns the number of layers inside a vector handle.
Parameter |
Description |
pVector |
Pointer to the vector handle. |
Returns
Number of layers.
Comments
After calling this function, L_VecGetLayerByIndex can be used to iterate through the layers in a vector handle.
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 show the names of the all layers inside a vector handle, in a message box */
L_VOID ShowLayers( pVECTORHANDLE pVector )
{
L_INT nCount, i;
VECTORLAYER Layer;
VECTORLAYERDESC LayerDesc;
/* Get number of layers inside the vector handle */
nCount = L_VecGetLayerCount( pVector );
/* Iterate through the layers */
for( i = 0; i < nCount; i++ )
{
/* Get layer and its descriptor */
L_VecGetLayerByIndex( pVector, i, &Layer );
L_VecGetLayer( pVector, &Layer, &LayerDesc );
/* Show name in a message box */
MessageBox( NULL, LayerDesc.szName, TEXT("Layer Name"), MB_OK );
/* Free the layer descriptor because it's no longer needed */
L_VecFreeLayer( &LayerDesc );
}
}