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LVectorBase::EnumLayersCallBack

#include "ltwrappr"

virtual L_INT LVectorBase::EnumLayersCallBack(pVector, pLayer)

pVECTORHANDLE pVector;	/* pointer to a vector handle */
pVECTORLAYER pLayer;	/* pointer to a vector layer */

Processes each vector layer enumerated by the LVectorBase::EnumLayers function.

Parameter	Description
pVector	Pointer to the vector handle that contains the layers to enumerate.
pLayer	Pointer to the vector layer being processed.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

The LVectorBase::EnumLayers function calls the callback function as it gets a pointer to each each vector layer.

To use the LVectorBase::EnumLayersCallBack, you must derive a class from LVectorBase and override the LVectorBase::EnumLayersCallBack member function. Note that this callback does not return an LVectorLayer object.

You can attach pLayer to an LVectorLayer class object and call LVectorLayer::GetLayerDesc to get detailed information about each enumerated layer.

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:

LVectorBase::EnumLayers

Example

For an example, refer to LVectorBase::EnumLayers