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.

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; 
}

Help Version 19.0.2017.10.27

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LEADTOOLS Vector C API Help

Introduction

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LEADTOOLS Vector Features

Redistributables/Files To Be Included With Your Application

Functions:	L_VecSetObjectViewContext, L_VecRemoveObjectViewContext
Topics:	Working View Context
	Getting Vector Object Information