这个代码没用,原来研究过。 在MSDN上找到一个,不知道能用不: MSDN搜索Get the Status of a Printer and a Print Job: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 = NULL; PRINTER_INFO_2 *pPrinterInfo = NULL; /* 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, (LPSTR)pPrinterInfo, cByteNeeded, &cByteUsed)) { /* Failure to access the printer. */ free(pPrinterInfo); pPrinterInfo = NULL; 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); pPrinterInfo = NULL; return FALSE; } } pJobStorage = (JOB_INFO_2 *)malloc(cByteNeeded); if (!pJobStorage) { /* Failure to allocate Job storage space. */ free(pPrinterInfo); pPrinterInfo = NULL; 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); pJobStorage = NULL; pPrinterInfo = NULL; return FALSE; } /* * Return the information. */ *pcJobs = nReturned; *pStatus = pPrinterInfo->Status; *ppJobInfo = pJobStorage; free(pPrinterInfo); return TRUE; } 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; }
在MSDN上找到一个,不知道能用不:
MSDN搜索Get the Status of a Printer and a Print Job: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 = NULL;
PRINTER_INFO_2 *pPrinterInfo = NULL; /* 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,
(LPSTR)pPrinterInfo,
cByteNeeded,
&cByteUsed))
{
/* Failure to access the printer. */
free(pPrinterInfo);
pPrinterInfo = NULL;
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);
pPrinterInfo = NULL;
return FALSE;
}
} pJobStorage = (JOB_INFO_2 *)malloc(cByteNeeded);
if (!pJobStorage)
{
/* Failure to allocate Job storage space. */
free(pPrinterInfo);
pPrinterInfo = NULL;
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);
pJobStorage = NULL;
pPrinterInfo = NULL;
return FALSE;
} /*
* Return the information.
*/
*pcJobs = nReturned;
*pStatus = pPrinterInfo->Status;
*ppJobInfo = pJobStorage;
free(pPrinterInfo); return TRUE; } 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; }
这东西就是给个思路,自己转换一下就可以了,而且我让他看看MSDN,上面有这段代码的介绍。
还有就是有个默认的打印机,打印时会用它来打印,但它可能不是排在第一个。