/*!
Tests communication with printer. It calls host supplied GetStatusInfo.
\return TRUE if communication with printer is working.
\note This implementation is appropriate for Parallel bus only.
*/
BOOL SystemServices::PrinterIsAlive()
{
BYTE status_reg;
// Technically, this function should not even be
// called if IOMode.bStatus is known to be FALSE
if (!IOMode.bStatus)
return TRUE;
if( GetStatusInfo(&status_reg) == FALSE )
{
DBG1("PrinterIsAlive: No Status-Byte Available (Default = TRUE)\n");
return TRUE;
}
#define DJ6XX_OFF (0xF8)
#define DJ400_OFF (0xC0)
// sometimes the DJ400 reports a status byte of C8 when it's turned off
#define DJ400_OFF_BOGUS (0xC8)
#define DEVICE_IS_OK(reg) (!((reg == DJ6XX_OFF) || (reg == DJ400_OFF) || (reg == DJ400_OFF_BOGUS)))
#if defined(APDK_DEBUG) && (DBG_MASK & DBG_LVL1)
printf("status reg is 0x%02x\n",status_reg);
if (DEVICE_IS_OK(status_reg))
DBG1("PrinterIsAlive: returning TRUE\n");
else
DBG1("PrinterIsAlive: returning FALSE\n");
#endif
return (DEVICE_IS_OK(status_reg));
}
void CHttpDownloadDlg::OnStatusCallBack(HINTERNET /*hInternet*/, DWORD dwInternetStatus,
LPVOID lpvStatusInformation, DWORD dwStatusInformationLength)
{
switch (dwInternetStatus)
{
case INTERNET_STATUS_RESOLVING_NAME:
SetStatus(GetResString(IDS_HTTPDOWNLOAD_RESOLVING_NAME), GetStatusInfo(lpvStatusInformation, dwStatusInformationLength));
break;
case INTERNET_STATUS_NAME_RESOLVED:
SetStatus(GetResString(IDS_HTTPDOWNLOAD_RESOLVED_NAME), GetStatusInfo(lpvStatusInformation, dwStatusInformationLength));
break;
case INTERNET_STATUS_CONNECTING_TO_SERVER:
SetStatus(GetResString(IDS_HTTPDOWNLOAD_CONNECTING), GetStatusInfo(lpvStatusInformation, dwStatusInformationLength));
break;
case INTERNET_STATUS_CONNECTED_TO_SERVER:
SetStatus(GetResString(IDS_HTTPDOWNLOAD_CONNECTED), GetStatusInfo(lpvStatusInformation, dwStatusInformationLength));
break;
case INTERNET_STATUS_REDIRECT:
SetStatus(GetResString(IDS_HTTPDOWNLOAD_REDIRECTING), GetStatusInfo(lpvStatusInformation, dwStatusInformationLength));
break;
}
}
/*!
Mandatory call to be inserted in derived constructor.
This method tries to establish communications with printer and identify it.
The derived SystemServices constructor must call this base-class routine.
*/
DRIVER_ERROR SystemServices::InitDeviceComm()
// Must be called from derived class constructor.
// (Base class must be constructed before system calls
// below can be made.)
// Opens the port, looks for printer and
// dialogues with user if none found;
// then attempts to read and parse device ID string --
// if successful, sets IOMode.bDevID to TRUE (strings stored
// for retrieval by PrintContext).
// Returns an error only if user cancelled. Otherwise
// no error even if unidi.
//
// Calls: OpenPort,PrinterIsAlive,DisplayPrinterStatus,BusyWait,
// GetDeviceID,DeviceRegistry::ParseDevIDString.
// Sets: hPort,IOMode, strModel, strPens
{
DRIVER_ERROR err = NO_ERROR;
BOOL ErrorDisplayed = FALSE;
BYTE temp;
// Check whether this system supports passing back a status-byte
if( GetStatusInfo(&temp) == FALSE )
{
DBG1("InitDeviceComm: No Status-Byte Available\n");
}
else IOMode.bStatus = TRUE;
// Check whether we can get a DeviceID - this may
// still fail if the device is just turned off
err = GetDeviceID(strDevID, DevIDBuffSize, TRUE);
if ( err == NO_ERROR )
{
DBG1("InitDeviceComm: DevID request successful\n");
IOMode.bDevID = TRUE;
}
// PrinterIsAlive is arbitrary if we can't get the status-byte.
// This check is also critical so a true uni-di system does not sit
// in a loop informing the user to turn on the printer.
if ( IOMode.bStatus == TRUE )
{
// Make sure a printer is there, turned on and connected
// before we go any further. This takes some additional checking
// due to the fact that the 895 returns a status byte of F8 when
// it's out of paper, the same as a 600 when it's turned off.
// 895 can get a devID even when 'off' so we'll key off that logic.
if ( (err != NO_ERROR) && (PrinterIsAlive() == FALSE) )
{
// Printer is actually turned off
while(PrinterIsAlive() == FALSE)
{
DBG1("PrinterIsAlive returned FALSE\n");
ErrorDisplayed = TRUE;
DisplayPrinterStatus(DISPLAY_NO_PRINTER_FOUND);
if(BusyWait(500) == JOB_CANCELED)
return JOB_CANCELED;
}
if(ErrorDisplayed == TRUE)
{
DisplayPrinterStatus(DISPLAY_PRINTING);
// if they just turned on/connected the printer,
// delay a bit to let it initialize
if(BusyWait(2000) == JOB_CANCELED)
return JOB_CANCELED;
err = GetDeviceID(strDevID, DevIDBuffSize, TRUE);
if ( err == NO_ERROR )
{
DBG1("InitDeviceComm: DevID request successful\n");
IOMode.bDevID = TRUE;
}
}
}
// else... we have 8xx/9xx with an out-of-paper error
// which we will catch in the I/O handling
}
if (err!=NO_ERROR)
{
DBG1("InitDeviceComm: No DeviceID Available\n");
return NO_ERROR;
}
err = DR->ParseDevIDString((const char*)strDevID, strModel, &VIPVersion, strPens);
if (err!=NO_ERROR)
{
// The DevID we got is actually garbage!
DBG1("InitDeviceComm: The DevID string is invalid!\n");
IOMode.bDevID=FALSE;
}
return NO_ERROR;
}
