POSMicro B16 Manual de Instruções descarregar pdf (Página 98)

Chapter 6. Samples

6.1. Programming example

This small programming example shows how to use the basic API functions to setup the grabber

hardware for getting a snap shot from the camera into memory.

The import library eleye716.lib (compiler dependent) has to be specified in your development tool.

#include "elpceye7.h"

#define IMAGE_WIDTH 560

#define IMAGE_HEIGHT 480

int main(int argc, char* argv[])

{

long Err, nRet = 0;

long wBoardID;

long wBufID;

void ** ppVideoMemory;

// open the grabber

wBoardID = el_OpenHW(0, 1);

if( wBoardID < 0)

{

printf( "Errorcode:%d\n", el_GetErrorCode() );

return false;

}

// initialize with default values

nRet = el_InitContext(wBoardID, NULL);

if( nRet != 0)

{

printf( "Errorcode:%d\n", el_GetErrorCode() );

return false;

}

wBufID = 0;

// initialize HW and allocate memory for the image

ppVideoMemory = el_InitHW(wBoardID, NULL, IMAGE_WIDTH, IMAGE_HEIGHT, 1, 0,

&wBufID);

if ( !ppVideoMemory )

{

printf( "Errorcode:%d\n", el_GetErrorCode() );

return false;

}

. setup the display

// aquire one snap shot

nRet = el_Acquire(wBoardID, EL_SNAP);

if( nRet != 0)

{

printf( "Errorcode:%d\n", el_GetErrorCode() );

return false;

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