L_VecGetObjectViewContext

#include "lvkrn.h"

L_LVKRN_API L_INT L_VecGetObjectViewContext(pVector, pObject, pMin, pMax)

pVECTORHANDLE pVector;

pointer to the vector handle

const pVECTOROBJECT pObject;

pointer to a VECTOROBJECT structure

pVECTORPOINT pMin;

pointer to a VECTORPOINT structure

pVECTORPOINT pMax;

pointer to a VECTORPOINT structure

Retrieves the minimum and maximum points of an objects view context space.

Parameter

Description

pVector

Pointer to vector handle.

pObject

Pointer to a VECTOROBJECT structure that contains the vector object for which to get the view context.

pMin

Pointer to a VECTORPOINT structure to be updated with the minimum point of the view context space.

pMax

Pointer to a VECTORPOINT structure to be updated with the maximum point of the view context space.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

This function fails if pObject doesnt have a preset view context.

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.

See Also

Functions:

L_VecSetObjectViewContext, L_VecRemoveObjectViewContext

Topics:

Working View Context

 

Getting Vector Object Information

Example

L_INT VecGetObjectViewContextExample( 
pVECTORHANDLE pVector, 
pVECTOROBJECT pObject, 
pVECTORPOINT pMin, 
pVECTORPOINT pMax) 
{ 
   L_INT          nRet; 
   VECTORPOINT    Min; 
   VECTORPOINT    Max; 
   nRet = L_VecGetObjectViewContext ( pVector, pObject, &Min, &Max ); 
   if( SUCCESS != nRet ) 
   { 
      nRet = L_VecSetObjectViewContext ( pVector, pObject, pMin, pMax ); 
      if (nRet != SUCCESS) 
         return nRet; 
      *pMin = Min; 
      *pMax = Max; 
   } 
   if( SUCCESS != nRet ) 
      L_VecRemoveObjectViewContext ( pVector, pObject ); 
   return nRet; 
} 

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