Zebra KR203 Specifiche Scaricare il pdf (Pagina 49)

B-3

Appendix B

Implementation in Calling Application

8/6/2010 KR203 Software Integrator Guide P1028248-001 Rev. A

Implementation in Calling Application

1. Open the Printer.

The first step of the implementation is to open the printer required to monitor and get

the Error event and Status even name.

bRet = OpenPrinter(m_csPrinter.GetBuffer(1),

&hPrinter, &pd);

…

if ((dRet = GetPrinterData(hPrinter, "ErrorEventName",

&dType, (LPBYTE)cTmp, 100, &dNeeded))!=ERROR_SUCCESS)

…

if ((dRet = GetPrinterData(hPrinter, "StatusEventName",

&dType, (LPBYTE)cTmp, 100, &dNeeded))!=ERROR_SUCCESS)

…

2. Open the Event Handles.

Open the two event handles and fill these handles into a structure that will pass on to

the new thread.

typedef struct _CStatusThreadInfo

{

HWNDmyHwnd;

DWORDdSleepTime;

HANDLEhPrinter;

HANDLEhError;

HANDLEhStatus;

BOOLm_hStatusEventKillThread;

} CStatusThreadInfo;

…

if ((cTi.hError = OpenEvent(SYNCHRONIZE, TRUE,

m_csErrorEvent))==NULL)

…

if ((cTi.hStatus = OpenEvent(SYNCHRONIZE, TRUE,

m_csStatusEvent))==NULL)

Step: Start Monitoring

When all this is done you can start your monitoring

thread.

m_StatusThread = AfxBeginThread( StatusThreadProc,

&cTi, THREAD_PRIORITY_NORMAL,0,0,NULL);

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Zebra KR203 Specifiche Pagina 49