LVectorPolyLine::LVectorPolyLine

#include "ltwrappr.h"

LVectorPolyLine::LVectorPolyLine(pPolyLine = NULL)

LVectorPolyLine::LVectorPolyLine(pObject, pVector =NULL)

pVECTORPOLYLINE pPolyLine;	pointer to a VECTORPOLYLINE structure
pVECTOROBJECT pObject;	pointer to a VECTOROBJECT structure
LVectorBase *pVector;	pointer to an LVectorBase object

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

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

Returns

None

Comments

LVectorPolyLine::LVectorPolyLine(pPolyLine) is a constructor for the LVectorPolyLine object. It takes a valid pVECTORPOLYLINE pointer and creates an LVectorPolyLine object.

LVectorPolyLine::LVectorPolyLine(pObject, pVector=NULL) creates an LVectorPolyLine object based on the information provided in pObject and associates the newly created LVectorPolyLine 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 LVectorPolyLine object using the LVectorPolyLine::LVectorPolyLine(pObject, pVector=NULL) constructor. For example:

   //pObject->nType == type other than VECTOR_POLYLINE   
   //LVectorBase *pVector is valid   
   LVectorPolyLine MyVectorPolyLine(pObject, pVectorBase);   
   if (MyVectorPolyLine.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.

Example

For an example for LVectorPolyLine::LVectorPolyLine(pPolyLine), refer to LVectorObject::UnlockObject. For an example for LVectorPolyLine::LVectorPolyLine(pObject, pVector=NULL), refer to LVectorArc::LVectorArc(pObject, pVector = NULL).

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