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LVectorRaster::LVectorRaster

#include "ltwrappr.h"

LVectorRaster::LVectorRaster(pRaster = NULL)

LVectorRaster::LVectorRaster(pObject, pVector =NULL)

pVECTORRASTER pRaster;	/* pointer to a VECTORRASTER structure */
pVECTOROBJECT pObject;	/* pointer to a VECTOROBJECT structure */
LVectorBase *pVector;	/* pointer to an LVectorBase object */

 

Constructs and initializes the different member variables of the LVectorRaster object.

Parameter	Description
pRaster	Pointer to a VECTORRASTER structure that contains information used to create and initialize the new vector raster object.
pObject	Pointer to a VECTOROBJECT structure that contains information used to create and initialize the new vector raster object.
pVector	Pointer to an LVectorBase object with which the newly constructed vector raster object will be associated.

Returns

None

Comments

LVectorRaster::LVectorRaster(pRaster) is a constructor for the LVectorRaster object. It takes a valid pVECTORRASTERpointer and creates an LVectorRaster object.

LVectorRaster::LVectorRaster(pObject, pVector=NULL) creates an LVectorRaster object based on the information provided in pObject and associates the newly created LVectorRaster object with the specified LVectorBase object. This constructor can be used with the LVectorLayer::EnumObjects function, which returns a valid pVECTOROBJECT pointer in the LVectorLayer::EnumObjectsCallBack member function. It can also be used with LVectorBase::VectorEventProcCallBack, which can also return a pObject.

Note that it is possible to construct an invalid LVectorRaster object using the LVectorRaster::LVectorRaster(pObject, pVector=NULL) constructor. For example:

   //pObject->nType == type other than VECTOR_RASTER
   //LVectorBase *pVector is valid
   LVectorRaster MyVectorRaster(pObject, pVectorBase);
   if (MyVectorRaster.IsTypeValid() == FALSE)
      MessageBox(NULL, TEXT("Invalid Vector Object"), TEXT(""), MB_OK);

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:

LVectorRaster::~LVectorRaster, Class Members

Example

For an example for LVectorRaster::LVectorRaster(pRaster), refer to LVectorRaster::LockObject.

For an example for LVectorRaster::LVectorRaster(pObject, pVector=NULL), refer to LVectorArc::LVectorArc(pObject, pVector = NULL).