LVectorPolygon::LVectorPolygon

Summary

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

Syntax

LVectorPolygon::LVectorPolygon(pPolygon = NULL)

LVectorPolygon::LVectorPolygon(pObject, pVector =NULL)

Parameters

pVECTORPOLYGON pPolygon

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

pVECTOROBJECT pObject

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

LVectorBase *pVector

Pointer to an LVectorBase object with which the newly constructed vector chord object will be associated.

Returns

None

Comments

LVectorPolygon::LVectorPolygon(pPolygon) is a constructor for the LVectorPolygon object. It takes a valid pVECTORPOLYGONpointer and creates an LVectorPolygon object.

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

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

Required DLLs and Libraries

• LTVKRN
• 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

• LVectorPolygon::~LVectorPolygon
• Class Members

Example

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