LVectorLine::LVectorLine

Summary

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

Syntax

LVectorLine::LVectorLine(pLine = NULL)

LVectorLine::LVectorLine(pObject, pVector =NULL)

Parameters

pVECTORLINE pLine

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

pVECTOROBJECT pObject

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

LVectorBase *pVector

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

Returns

None.

Comments

LVectorLine::LVectorLine(pLine) is a constructor for the LVectorLine object. It takes a valid pVECTORLINE pointer and creates an LVectorLine object.

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

   //pObject->nType == type other than VECTOR_LINE   
   //LVectorBase *pVector is valid   
   LVectorLine MyVectorLine(pObject, pVectorBase);   
   if (MyVectorLine.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

• LVectorLine::~LVectorLine
• Class Members

Example

For an example for LVectorLine::LVectorLine(pLine), refer to LVectorLayer::AddObject.
For an example for LVectorLine::LVectorLine(pObject, pVector=NULL), refer to LVectorArc::LVectorArc(pObject, pVector = NULL).