LVectorPolyLine::LVectorPolyLine

#include "ltwrappr.h"

LVectorPolyLine::LVectorPolyLine(pPolyLine = NULL)

LVectorPolyLine::LVectorPolyLine(pObject, pVector =NULL)

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

Parameters

pVECTORPOLYLINE pPolyLine

Pointer to a VECTORPOLYLINE structure that contains information used to create and initialize the new vector polyline object.

pVECTOROBJECT pObject

Pointer to a VECTOROBJECT structure that contains information used to create and initialize the new vector polyline object.

LVectorBase *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

See Also

Functions

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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