L_SetVectorOptions

#include "l_bitmap.h"

L_LTFIL_API L_INT L_SetVectorOptions(pOptions);

pointer to a structure

Sets the file options used by LEADTOOLS when loading vector files.

Parameter	Description
pOptions	Pointer to a structure containing the options for loading vector files.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

The uStructSize member of the VECTOROPTIONS structure must be set before calling this function. If a vector file is loaded without first calling this function, the following default values will be used:

VECTOROPTIONS Member:	Default value:
VEC2DOPTIONS.nViewWidth	0 pixels
VEC2DOPTIONS.nViewHeight	0 pixels
VEC2DOPTIONS.ViewMode	VECTORVIEWMODE_USE_BEST
nBitsPerPixel	0
bForceBackgroundColor	FALSE
BackgroundColor	0

The values set by this function are valid for the current thread. To change the values used by the current thread, call this function again.

A vector image file usually does not have a physical size. The user can specify a viewport (physical size up to which the drawing can be rendered) using nViewHeight and nViewWidth. How the drawing is rendered inside this viewport depends on which ViewMode isset. The default viewport size is 640x480 pixels.

Required DLLs and Libraries

LTFIL
File format DLLs

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

Example

This example loads a vector file, using the vector options defined by the user.

L_INT SetVectorOptionsExample(L_TCHAR     *pszVectorFileName, 
pVECTORHANDLE  pVector, 
COLORREF               clBackground, 
L_INT                  nBitsPerPixel, 
L_INT              nViewWidth, 
L_INT                  nViewHeight) 
{ 
   L_INT nRet; 
   VECTOROPTIONS VectorOptions; 
   /* Get the current vector options */ 
   nRet = L_GetVectorOptions(&VectorOptions,sizeof(VECTOROPTIONS)); 
   if(nRet != SUCCESS) 
      return nRet; 
   /*Change vector options */ 
   VectorOptions.bForceBackgroundColor = TRUE; 
   VectorOptions.BackgroundColor = clBackground; 
   VectorOptions.nBitsPerPixel = nBitsPerPixel; 
   VectorOptions.Vec2DOptions.ViewMode = VECTORVIEWMODE_USE_WIDTH_HEIGHT; 
   VectorOptions.Vec2DOptions.nViewWidth = nViewWidth; 
   VectorOptions.Vec2DOptions.nViewHeight = nViewHeight; 
   /* Set new vector options */ 
   nRet = L_SetVectorOptions(&VectorOptions); 
   if(nRet != SUCCESS) 
      return nRet; 
   /* Now load the vector file */ 
   nRet = L_VecLoadFile(pszVectorFileName, pVector,NULL, NULL); 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
}

Help Version 19.0.2017.10.27

Products | Support | Contact Us | Copyright Notices
© 1991-2017 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Raster Imaging C API Help

Introduction

Version History

Getting Started

LEADTOOLS Raster Imaging Features

Redistributables/Files To Be Included With Your Application

Functions:	L_GetVectorOptions
Topics:	Vector Images