LVectorCircle::LVectorCircle

Summary

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

Syntax

LVectorCircle::LVectorCircle(pCircle = NULL)

LVectorCircle::LVectorCircle(pObject, pVector =NULL)

Parameters

pVECTORCIRCLE pCircle

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

pVECTOROBJECT pObject

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

LVectorBase *pVector

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

Returns

None

Comments

LVectorCircle::LVectorCircle(pCircle) is a constructor for the LVectorCircle object. It takes a valid pVECTORCIRCLE pointer and creates an LVectorCircle object.

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

   //pObject->nType == type other than VECTOR_CIRCLE   
   //LVectorBase *pVector is valid   
   LVectorCircle MyVectorCircle(pObject, pVectorBase);   
   if (MyVectorCircle.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

• LVectorCircle::~LVectorCircle
• Class Members

Example

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