c++ - Getting IPAddress with XcvData -


i needing ip of printer not having success. tried in various ways. code this:

void spl::getipaddress(lpstr printername) {     handle hprinter;     pbyte waddress = null;           dword size;     dword status;     lpstr portname = getprot(printername);     std::ostringstream strtemp;     strtemp << portname;      string temp = ",xcvport " + strtemp.str();     //temp = ,xcvport 192.168.2.247      lpstr templpstr((lpstr)temp.c_str());      if(openprinter(templpstr,&hprinter,null))     {         if (xcvdata(hprinter, l"ipaddress", null, 0,waddress,31, &size,&status))         {           }     }  }

when tries call xcvdata function not enter 'if'. , object "waddress" remains empty. because i'm not getting?

obs: code based on msdn doc: http://msdn.microsoft.com/en-us/library/windows/hardware/ff562761(v=vs.85).aspx

thank!

you're missing server name in openprinter call. printer name should this:

"\\\\myserver\\,xvcport myport"

to confirm problem, call getlasterror when openprinter fails.


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