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Printing a word doc in duplex mode using delphi OLE Automation

Posted on 2013-06-28
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Last Modified: 2013-07-31
Hello,

I am using a printer that supports duplex printing(I am successfully printing double-sided a document using Word - Office 2013). I need to print a word document double-sided using Delphi and my tries have failed so far.
Please let me know if you have a working solution.
Here is the code I am using:

procedure TForm1.b1Click(Sender: TObject);
var
  Word: variant;

  procedure SetDuplexMode;
  var
    Device, Driver, Port: array[0..80] of Char;
    DevMode: THandle;
    pDevmode: PDeviceMode;
  begin
    Printer.GetPrinter(Device, Driver, Port, DevMode);
    if Devmode  <> 0 then begin
      pDevMode := GlobalLock(Devmode);
      if pDevmode <> nil then
      try
        with pDevmode^ do begin
          dmDuplex := DMDUP_VERTICAL;
          dmFields := dmFields or DM_DUPLEX;
        end;
      finally
        GlobalUnlock(Devmode);
      end;
    end;
  end;

begin
   Word := CreateOleObject('Word.Application');
   Word.documents.add('C:\Developpement\Analysis\Print-Doubleface\1.docx');
   SetDuplexMode;

   Word.ActiveDocument.Printout;
end;
0
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Question by:AMS_DEV
3 Comments
 
LVL 31

Expert Comment

by:Helen_Feddema
Comment Utility
I am not familiar with Delphi, but one way to get around difficulties with duplexing via code is to make a separate printer item, preset for duplexing.  Then you just print to that printer.  That is what I do for printing from Word or Access.
0
 

Author Comment

by:AMS_DEV
Comment Utility
Thanks Helen, but I really need someone that can fix my code or give me another code example that works. Or maybe you can show me the code in another language you work with.
0
 

Accepted Solution

by:
Guillaume80 earned 500 total points
Comment Utility
The code you are using won't work because you are modifying the printer properties in the context of your Delphi application. (Add a TPrinterSetupDialog and you will see that the duplex mode is activated)
However, each application manages the printer properties independently.

You should therefore find a way to modify those properties through your Word Ole object. I have no knowledge of how you can handle this... As far as I know, it is not possible.

As Helen_Feddema suggested, the best way to get around this is to set up a dedicated printer for duplex printing. On a network, you can use a shared printer.
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