如何判断打印机是否缺纸?????????

Question

如何判断打印机是否缺纸????????? 最好有具体的实现代码

Answer 1

http://community.csdn.net/Expert/TopicView3.asp?id=3925038

Answer 2

转贴，忘记是谁的了：
'引用windows scripting host object model
'Check Printers at 5 minutes intervals
 Private Sub BKWait(HowManySecs)
'   pause for HowManySecs seconds
    Dim EndWait
    EndWait = DateAdd("s", HowManySecs, Now)
    While Now < EndWait
    Wend
End Sub
Sub PrintMon(host As String)
Dim WScript As New IWshShell_Class
Dim i As Integer
Set c = GetObject("WinNT://" & host & ",computer")
c.Filter = Array("PrintQueue")
MsgBox "Check Printers on " & host
For Each pq In c
If pq.Status > 0 Then CheckPrinter (pq)
Next
BKWait (180) '延时3分钟
DoEvents
Call PrintMon(host)
End Sub
'Display Printer status for non-normal conditions
Sub CheckPrinter(obj)
MsgBox "Print  Queue  Name: " & obj.Name
MsgBox "Printer Model:" & obj.model
MsgBox "Printer Location:" & obj.Location
Select Case obj.Status
Case 1
MsgBox "打印队列暂停."
Case 2
MsgBox "打印队列被删除."
Case 3
MsgBox "打印机错误."
Case 4
MsgBox "纸堵塞在打印机中."
Case 5
MsgBox "打印机缺纸."
Case 6
MsgBox "打印机设置为手工进纸."
Case 7
MsgBox "打印机错误."
Case 8
MsgBox "打印机下线."
Case 256
MsgBox "打印机I/O活动."
Case 512
MsgBox "打印机忙."
Case 1024
MsgBox "打印机正在打印."
Case 2048
MsgBox "打印机输出盒满."
Case 4096
MsgBox "打印机不可用."
MsgBox 8192
MsgBox "打印机等待."
Case 16384
MsgBox "打印机正在处理."
Case 32768
MsgBox "打印机正在初始化."
Case 65536
MsgBox "打印机正在加热."
Case 131072
MsgBox "Printer is low on toner."
Case 262144
MsgBox "Printer is out of toner."
Case 524288
MsgBox "打印机纸未接上."
Case 1048576
MsgBox "用户干预打印机."
Case 2097152
MsgBox "打印机内存用尽."
Case 4194304
MsgBox "打印机仓门打开."
Case 8388608
MsgBox "打印机未知错误."
Case 16777216
MsgBox "打印机处于省电模式."
Case Else
MsgBox "Printer is changing states or has error."
MsgBox "Status:" & CStr(pq.Status)
End Select
End Sub
Private Sub Form_Load()
Dim host As String
label: host = InputBox("请输入打印机服务器所在组（域）名:(eg:3623/lysra)", "=====Printer Monitor=====")
If host = "" Then GoTo labelCall PrintMon(host)
End Sub
'假设3623工作组中LySra为打印机服务器

Answer 3

http://support.microsoft.com/kb/q160129/How To Get the Status of a Printer and a Print Job下面函数的：PRINTER_STATUS_PAPER_OUT 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))
       {
           free( pJobs );
           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))
               {
                   free( pJobs );
                   return TRUE;
               }
           }
       }       /*
        *  No error condition.
        */
       free( pJobs );
       return FALSE;   }