109 lines
3.7 KiB
C
109 lines
3.7 KiB
C
/*
|
|
* $Id$
|
|
*/
|
|
|
|
/*
|
|
* Harbour Project source code:
|
|
* ISPRINTER() function
|
|
*
|
|
* Copyright 1999-2001 Viktor Szakats <viktor.szakats@syenar.hu>
|
|
* www - http://www.harbour-project.org
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this software; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
|
|
* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
|
|
*
|
|
* As a special exception, the Harbour Project gives permission for
|
|
* additional uses of the text contained in its release of Harbour.
|
|
*
|
|
* The exception is that, if you link the Harbour libraries with other
|
|
* files to produce an executable, this does not by itself cause the
|
|
* resulting executable to be covered by the GNU General Public License.
|
|
* Your use of that executable is in no way restricted on account of
|
|
* linking the Harbour library code into it.
|
|
*
|
|
* This exception does not however invalidate any other reasons why
|
|
* the executable file might be covered by the GNU General Public License.
|
|
*
|
|
* This exception applies only to the code released by the Harbour
|
|
* Project under the name Harbour. If you copy code from other
|
|
* Harbour Project or Free Software Foundation releases into a copy of
|
|
* Harbour, as the General Public License permits, the exception does
|
|
* not apply to the code that you add in this way. To avoid misleading
|
|
* anyone as to the status of such modified files, you must delete
|
|
* this exception notice from them.
|
|
*
|
|
* If you write modifications of your own for Harbour, it is your choice
|
|
* whether to permit this exception to apply to your modifications.
|
|
* If you do not wish that, delete this exception notice.
|
|
*
|
|
*/
|
|
|
|
#define HB_OS_WIN_32_USED
|
|
|
|
#include "hbapi.h"
|
|
#include "hbapifs.h"
|
|
|
|
/* NOTE: The parameter is an extension over CA-Cl*pper, it's also supported
|
|
by Xbase++. [vszakats] */
|
|
|
|
HB_FUNC( ISPRINTER )
|
|
{
|
|
char * pszDOSPort = ( ISCHAR( 1 ) && hb_parclen( 1 ) >= 4 ) ? hb_parc( 1 ) : "LPT1";
|
|
USHORT uiPort = atoi( pszDOSPort + 3 );
|
|
BOOL bIsPrinter = FALSE;
|
|
|
|
#if defined(HB_OS_DOS)
|
|
|
|
/* NOTE: DOS specific solution, using BIOS interrupt */
|
|
|
|
if( hb_strnicmp( pszDOSPort, "LPT", 3 ) == 0 && uiPort > 0 )
|
|
{
|
|
union REGS regs;
|
|
|
|
regs.h.ah = 2;
|
|
regs.HB_XREGS.dx = uiPort - 1;
|
|
|
|
HB_DOS_INT86( 0x17, ®s, ®s );
|
|
|
|
bIsPrinter = ( regs.h.ah == 0x90 );
|
|
}
|
|
else if( hb_strnicmp( pszDOSPort, "COM", 3 ) == 0 && uiPort > 0 )
|
|
{
|
|
/* TODO: Proper COM port checking */
|
|
bIsPrinter = TRUE;
|
|
}
|
|
|
|
#else
|
|
|
|
/* NOTE: Platform independent method, at least it will compile and run
|
|
on any platform, but the result may not be the expected one,
|
|
since Unix/Linux doesn't support LPT/COM by nature, other OSs
|
|
may not reflect the actual physical presence of the printer when
|
|
trying to open it, since we are talking to the spooler.
|
|
[vszakats] */
|
|
|
|
if( ( hb_strnicmp( pszDOSPort, "LPT", 3 ) == 0 ||
|
|
hb_strnicmp( pszDOSPort, "COM", 3 ) == 0 ) && uiPort > 0 )
|
|
{
|
|
FHANDLE fhnd = hb_fsOpen( ( BYTE * ) pszDOSPort, FO_WRITE | FO_SHARED | FO_PRIVATE );
|
|
bIsPrinter = ( fhnd != FS_ERROR );
|
|
hb_fsClose( fhnd );
|
|
}
|
|
|
|
#endif
|
|
|
|
hb_retl( bIsPrinter );
|
|
}
|