411 lines
12 KiB
C
411 lines
12 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.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* The following parts are Copyright of the individual authors.
|
|
* www - http://www.harbour-project.org
|
|
*
|
|
* Copyright 2001 Luiz Rafael Culik <culik@sl.conex.net
|
|
* ISPRINTER() support for win32
|
|
*
|
|
* See doc/license.txt for licensing terms.
|
|
*
|
|
*/
|
|
|
|
#define HB_OS_WIN_32_USED
|
|
|
|
#include "hbapi.h"
|
|
#include "hbapifs.h"
|
|
|
|
#if defined(HB_OS_WIN_32) && !defined(__RSXNT__)
|
|
#include <stdio.h>
|
|
#include <malloc.h>
|
|
#include <winspool.h>
|
|
BOOL DPGetDefaultPrinter(LPTSTR pPrinterName, LPDWORD pdwBufferSize);
|
|
BOOL IsPrinterError(HANDLE hPrinter);
|
|
BOOL GetJobs(HANDLE hPrinter,
|
|
JOB_INFO_2 **ppJobInfo,
|
|
int *pcJobs,
|
|
DWORD *pStatus) ;
|
|
#define MAXBUFFERSIZE 250
|
|
#endif
|
|
|
|
/* 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;
|
|
|
|
#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
|
|
bIsPrinter = FALSE;
|
|
|
|
|
|
#elif defined(HB_OS_WIN_32) && !defined(__RSXNT__)
|
|
|
|
{
|
|
char DefaultPrinter[ 80 ];
|
|
DWORD pdwBufferSize = 80;
|
|
HANDLE hPrinter;
|
|
|
|
DPGetDefaultPrinter( ( LPTSTR ) &DefaultPrinter, &pdwBufferSize);
|
|
OpenPrinter( DefaultPrinter, &hPrinter, NULL );
|
|
bIsPrinter = ! IsPrinterError( hPrinter );
|
|
|
|
HB_SYMBOL_UNUSED( uiPort );
|
|
}
|
|
|
|
#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 );
|
|
}
|
|
else
|
|
bIsPrinter = FALSE;
|
|
|
|
#endif
|
|
|
|
hb_retl( bIsPrinter );
|
|
}
|
|
|
|
/** The code below does the check for the printer */
|
|
|
|
#if defined(HB_OS_WIN_32) && !defined(__RSXNT__)
|
|
|
|
BOOL DPGetDefaultPrinter(LPTSTR pPrinterName, LPDWORD pdwBufferSize)
|
|
{
|
|
BOOL bFlag;
|
|
OSVERSIONINFO osv;
|
|
TCHAR cBuffer[MAXBUFFERSIZE];
|
|
PRINTER_INFO_2 *ppi2 = NULL;
|
|
DWORD dwNeeded = 0;
|
|
DWORD dwReturned = 0;
|
|
|
|
/* What version of Windows are you running? */
|
|
osv.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
|
|
GetVersionEx(&osv);
|
|
|
|
/* If Windows 95 or 98, use EnumPrinters... */
|
|
if (osv.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
|
|
{
|
|
/* The first EnumPrinters() tells you how big our buffer should
|
|
be in order to hold ALL of PRINTER_INFO_2. Note that this will
|
|
usually return FALSE. This only means that the buffer (the 4th
|
|
parameter) was not filled in. You don't want it filled in here... */
|
|
EnumPrinters(PRINTER_ENUM_DEFAULT, NULL, 2, NULL, 0, &dwNeeded, &dwReturned);
|
|
if (dwNeeded == 0)
|
|
return FALSE;
|
|
|
|
/* Allocate enough space for PRINTER_INFO_2... */
|
|
ppi2 = (PRINTER_INFO_2 *)GlobalAlloc(GPTR, dwNeeded);
|
|
if (!ppi2)
|
|
return FALSE;
|
|
|
|
/* The second EnumPrinters() will fill in all the current information... */
|
|
bFlag = EnumPrinters(PRINTER_ENUM_DEFAULT, NULL, 2, (LPBYTE)ppi2, dwNeeded, &dwNeeded, &dwReturned);
|
|
if (!bFlag)
|
|
{
|
|
GlobalFree(ppi2);
|
|
return FALSE;
|
|
}
|
|
|
|
/* If given buffer too small, set required size and fail... */
|
|
if ((DWORD)lstrlen(ppi2->pPrinterName) >= *pdwBufferSize)
|
|
{
|
|
*pdwBufferSize = (DWORD)lstrlen(ppi2->pPrinterName) + 1;
|
|
GlobalFree(ppi2);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Copy printer name into passed-in buffer... */
|
|
lstrcpy(pPrinterName, ppi2->pPrinterName);
|
|
|
|
/* Set buffer size parameter to min required buffer size... */
|
|
*pdwBufferSize = (DWORD)lstrlen(ppi2->pPrinterName) + 1;
|
|
}
|
|
|
|
/* If Windows NT, use the GetDefaultPrinter API for Windows 2000,
|
|
or GetProfileString for version 4.0 and earlier... */
|
|
else if (osv.dwPlatformId == VER_PLATFORM_WIN32_NT)
|
|
{
|
|
#if(WINVER >= 0x0500)
|
|
if (osv.dwMajorVersion >= 5) /* Windows 2000 or later */
|
|
{
|
|
bFlag = GetDefaultPrinter(pPrinterName, pdwBufferSize);
|
|
if (!bFlag)
|
|
return FALSE;
|
|
}
|
|
|
|
else /* NT4.0 or earlier */
|
|
#endif
|
|
{
|
|
/* Retrieve the default string from Win.ini (the registry).
|
|
String will be in form "printername,drivername,portname". */
|
|
if (GetProfileString("windows", "device", ",,,", cBuffer, MAXBUFFERSIZE) <= 0)
|
|
return FALSE;
|
|
|
|
/* Printer name precedes first "," character... */
|
|
strtok(cBuffer, ",");
|
|
|
|
/* If given buffer too small, set required size and fail... */
|
|
if ((DWORD)lstrlen(cBuffer) >= *pdwBufferSize)
|
|
{
|
|
*pdwBufferSize = (DWORD)lstrlen(cBuffer) + 1;
|
|
return FALSE;
|
|
}
|
|
|
|
/* Copy printer name into passed-in buffer... */
|
|
lstrcpy(pPrinterName, cBuffer);
|
|
|
|
/* Set buffer size parameter to min required buffer size... */
|
|
*pdwBufferSize = (DWORD)lstrlen(cBuffer) + 1;
|
|
}
|
|
}
|
|
|
|
/* Cleanup... */
|
|
if (ppi2)
|
|
GlobalFree(ppi2);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#undef MAXBUFFERSIZE
|
|
BOOL IsPrinterError(HANDLE hPrinter)
|
|
{
|
|
|
|
JOB_INFO_2 *pJobs;
|
|
int cJobs,
|
|
i;
|
|
DWORD dwPrinterStatus;
|
|
|
|
/*
|
|
* Get the state information for the Printer Queue and
|
|
* the jobs in the Printer Queue.
|
|
*/
|
|
if (!GetJobs(hPrinter, &pJobs, &cJobs, &dwPrinterStatus))
|
|
return FALSE;
|
|
|
|
/*
|
|
* If the Printer reports an error, believe it.
|
|
*/
|
|
if (dwPrinterStatus &
|
|
(PRINTER_STATUS_ERROR |
|
|
PRINTER_STATUS_PAPER_JAM |
|
|
PRINTER_STATUS_PAPER_OUT |
|
|
PRINTER_STATUS_PAPER_PROBLEM |
|
|
PRINTER_STATUS_OUTPUT_BIN_FULL |
|
|
PRINTER_STATUS_NOT_AVAILABLE |
|
|
PRINTER_STATUS_NO_TONER |
|
|
PRINTER_STATUS_OUT_OF_MEMORY |
|
|
PRINTER_STATUS_OFFLINE |
|
|
PRINTER_STATUS_DOOR_OPEN))
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Find the Job in the Queue that is printing.
|
|
*/
|
|
for (i=0; i < cJobs; i++)
|
|
{
|
|
if (pJobs[i].Status & JOB_STATUS_PRINTING)
|
|
{
|
|
/*
|
|
* If the job is in an error state,
|
|
* report an error for the printer.
|
|
* Code could be inserted here to
|
|
* attempt an interpretation of the
|
|
* pStatus member as well.
|
|
*/
|
|
if (pJobs[i].Status &
|
|
(JOB_STATUS_ERROR |
|
|
JOB_STATUS_OFFLINE |
|
|
JOB_STATUS_PAPEROUT |
|
|
JOB_STATUS_BLOCKED_DEVQ))
|
|
{
|
|
return TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* No error condition.
|
|
*/
|
|
return FALSE;
|
|
|
|
}
|
|
BOOL GetJobs(HANDLE hPrinter, /* Handle to the printer. */
|
|
|
|
JOB_INFO_2 **ppJobInfo, /* Pointer to be filled. */
|
|
int *pcJobs, /* Count of jobs filled. */
|
|
DWORD *pStatus) /* Print Queue status. */
|
|
|
|
{
|
|
|
|
DWORD cByteNeeded,
|
|
nReturned,
|
|
cByteUsed;
|
|
JOB_INFO_2 *pJobStorage;
|
|
PRINTER_INFO_2 *pPrinterInfo;
|
|
|
|
/* Get the buffer size needed. */
|
|
if (!GetPrinter(hPrinter, 2, NULL, 0, &cByteNeeded))
|
|
{
|
|
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
|
|
return FALSE;
|
|
}
|
|
|
|
pPrinterInfo = (PRINTER_INFO_2 *)malloc(cByteNeeded);
|
|
if (!(pPrinterInfo))
|
|
/* Failure to allocate memory. */
|
|
return FALSE;
|
|
|
|
/* Get the printer information. */
|
|
if (!GetPrinter(hPrinter,
|
|
2,
|
|
(LPBYTE)pPrinterInfo,
|
|
cByteNeeded,
|
|
&cByteUsed))
|
|
{
|
|
/* Failure to access the printer. */
|
|
free(pPrinterInfo);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Get job storage space. */
|
|
if (!EnumJobs(hPrinter,
|
|
0,
|
|
pPrinterInfo->cJobs,
|
|
2,
|
|
NULL,
|
|
0,
|
|
(LPDWORD)&cByteNeeded,
|
|
(LPDWORD)&nReturned))
|
|
{
|
|
if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
|
|
{
|
|
free(pPrinterInfo);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
pJobStorage = (JOB_INFO_2 *)malloc(cByteNeeded);
|
|
if (!pJobStorage)
|
|
{
|
|
/* Failure to allocate Job storage space. */
|
|
free(pPrinterInfo);
|
|
return FALSE;
|
|
}
|
|
|
|
ZeroMemory(pJobStorage, cByteNeeded);
|
|
|
|
/* Get the list of jobs. */
|
|
if (!EnumJobs(hPrinter,
|
|
0,
|
|
pPrinterInfo->cJobs,
|
|
2,
|
|
(LPBYTE)pJobStorage,
|
|
cByteNeeded,
|
|
(LPDWORD)&cByteUsed,
|
|
(LPDWORD)&nReturned))
|
|
{
|
|
free(pPrinterInfo);
|
|
free(pJobStorage);
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* Return the information.
|
|
*/
|
|
*pcJobs = nReturned;
|
|
*pStatus = pPrinterInfo->Status;
|
|
*ppJobInfo = pJobStorage;
|
|
free(pPrinterInfo);
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
#endif
|