#include “BiAnno.h”
WORD CALLBACK AnnoGetLayerNumber( INT_PTR pAnno )
Description
Returns the number of viewable layers (the number of entries in the layer list).
Parameters
|
INT_PTR |
pAnno |
Annotation handle |
Return value
The number of viewable layers. Return value 0 (zero) indicates that all of the layers used in the annotation are visible and editable (this is the default).
Programming Notes
You can use this function in conjunction with the AnnoGetLayers function. First call the AnnoGetLayerNumber to retrieve the number of 16 bit data items in the array to allocate, then pass the array to the AnnoGetLayers with the exact number of retrievable layers. If the AnnoGetLayerNumber returns 0 (zero), you don't need to call the second function, because all of the layers are visible.
Code Example
None