Agilent Technologies E2094S Guía de usuario descargar pdf (Pagina 73)

Programming with VISA 3

Agilent VISA User’s Guide 73

status = viOpenDefaultRM( &drm );

if ( status < VI_SUCCESS ) {

printf( "ERROR: viOpenDefaultRM failed with

error = 0x%lx\n", status );

return;

}

/* Install the exception handler and enable

events for it */

status = viInstallHandler(drm,

VI_EVENT_EXCEPTION, myExceptionHandler,

myUserHandle);

if ( status < VI_SUCCESS )

{

printf( "ERROR: viInstallHandler failed

with error 0x%lx\n", status );

}

status = viEnableEvent(drm, VI_EVENT_EXCEPTION,

VI_HNDLR, VI_NULL);

if ( status < VI_SUCCESS ) {

printf( "ERROR: viEnableEvent failed with

error 0x%lx\n", status );

}

/* Generate an error to demonstrate that the

handler will be called */

status = viOpen( drm, "badVisaName", NULL,

NULL, &vi );

if ( status < VI_SUCCESS ) {

printf("ERROR: viOpen failed with error

0x%lx\n"

"Exception Handler should have been

called\n"

"before this message was printed.\n",status

);

}

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Agilent Technologies E2094S Guía de usuario Pagina 73