Printer analysis

I am trying to write a program that can detect when the attached printer (either local or on the network) starts printing a job and when it stops printing that job.  The program will then time how long it takes to complete printing the job in question.  The jobs can be from any application (eg a MS Word doc that is being printed).

How can I detect and monitor the status of a print job that has been spooled by an external program (eg MS Word) ?

I would be grateful for any help offered regarding this.

Thanks in advance

John Clarke
johnclarkeAsked:
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puzhikaduConnect With a Mentor Commented:
const INCHES_PER_MILIMETER : Real  = 0.04;type  TOffset =   record
               X,Y: Integer;              end;
var FDeviceName : String;  {Get the name}
    FPageHeightPixel, FPageWidthPixel : Integer ;  {Page height and Page Width}
    FOrientation : TPrinterOrientation; {Orientation}
    FPrintOffsetPixels : TOffset;    FPixelsPerMMX,FPixelsPerMMY: Real;
    MMSize, FPageHeightMM : Integer;
    TheReport, TheHead, HeadLine, RecordLine, TFname, TLname :String;
procedure TMissing_Rep.GetDeviceSettings;var  retval: integer;
  PixX, PixY: Integer;begin
    FDeviceName := Printer.Printers[Printer.PrinterIndex];  {Get the name}
    FPageHeightPixel := Printer.PageHeight;                 {Page height}
    FPageWidthPixel := Printer.PageWidth;                   {Page Width}
    FOrientation := Printer.Orientation;{Orientation}
    {Get the printable area offsets}    {$IFDEF WIN32}
       FPrintOffsetPixels.X := GetDeviceCaps(Printer.Handle, PHYSICALOFFSETX);
       FPrintOffsetPixels.Y := GetDeviceCaps(Printer.Handle, PHYSICALOFFSETY);
    {$ELSE}       retval := Escape(Printer.Handle,GETPRINTINGOFFSET,
                        0, nil, @FPrintOffsetPixels);    {$ENDIF}
    {Get Pixels per Milimeter Ratio}
    PixX := GetDeviceCaps(Printer.Handle, LOGPIXELSX);
    PixY :=  GetDeviceCaps(Printer.Handle, LOGPIXELSY);
    FPixelsPerMMX := INCHES_PER_MILIMETER * PixX;
    FPixelsPerMMY := INCHES_PER_MILIMETER  * PixY;
    FPageHeightMM := Round(FPageHeightPixel/FPixelsPerMMY); end;
function TMissing_Rep.PutText(mmX,mmY: Integer; S: string; LeftAlign:
Boolean): boolean;var  X, Y: Integer;  align: WORD;begin  if LeftAlign then
    align :=  SetTextAlign(Printer.Handle,TA_BOTTOM or TA_LEFT)  else
    align :=  SetTextAlign(Printer.Handle,TA_BOTTOM or TA_RIGHT);
  result := FALSE; {Assume fail}
  X := Trunc(mmX * FPixelsPerMMX) - FPrintOffsetPixels.X;
  Y := Trunc(mmY * FPixelsPerMMY) - FPrintOffsetPixels.Y;  if X < 0 then exit;
  if Y < 0 then exit;  Printer.Canvas.TextOut(X,Y,S);  result := TRUE;end;
procedure TMissing_Rep.Print_ButClick(Sender: TObject);var PixelSize: Integer;
beginPrint_But.Enabled := False;if PrintDialog1.Execute then begin
 Printer.Canvas.Font := Missing_Rep.Font;
 PixelSize := Printer.Canvas.TextHeight('Yy');
 MMSize := Round(PixelSize/FPixelsPerMMY);
 Printer.Title := 'Breast Cancer Project Missing Report';
 Printer.BeginDoc;                        { begin to send print job to printer }
 PrintGenerator;
 Printer.EndDoc;                 { EndDoc ends and starts printing print job }
 end; Print_But.Enabled := True; end;procedure TMissing_Rep.PrintGenerator;Var
  yLoc , NumRows, TheRow :Integer;  procedure Heading;  begin   yLoc := 20;
   PutText(20, 20, TheHead, TRUE);   yLoc := yLoc + MMSize;
   PutText(20,  yLoc, StringGrid1.Cells[0,0], TRUE);
   PutText(60,  yLoc, StringGrid1.Cells[1,0], TRUE);
   PutText(100, yLoc, StringGrid1.Cells[2,0], TRUE);
   PutText(120, yLoc, StringGrid1.Cells[3,0], TRUE);
   PutText(150, yLoc, StringGrid1.Cells[4,0], TRUE);   yLoc := yLoc + MMSize;
 end;  procedure Footer;  begin
  PutText(100,FPageHeightMM,InttoStr(Printer.PageNumber), TRUE);  end;begin
   Heading;   TheRow := 1;   while (TheRow < StringGrid1.RowCount) do   begin
       if (yLoc > (FPageHeightMM - MMSize)) then         begin              Footer;
              Printer.NewPage;              Heading;           end;
       TheGauge.Progress := Round(100 * TheRow/(StringGrid1.RowCount - 1));
       PutText(20,  yLoc, StringGrid1.Cells[0,TheRow], TRUE);
       PutText(60,  yLoc, StringGrid1.Cells[1,TheRow], TRUE);
       PutText(100, yLoc, StringGrid1.Cells[2,TheRow], TRUE);
       PutText(120, yLoc, StringGrid1.Cells[3,TheRow], TRUE);
       PutText(150, yLoc, StringGrid1.Cells[4,TheRow], TRUE);       yLoc := yLoc + MMSize;
       TheRow := TheRow + 1; end;Footer;end;
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MadshiCommented:
Hi John,

please look at winAPI EnumJobs. Sorry, have no demo sources for that, but it should be exactly what you need...

Regards, Madshi.
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