Random failure to print a logo

Once in awhile we'll print a few hundred merged letters, and one of them will fail to print the logo (one logo is used per batch -- it is preloaded into a variable before the merge begins). We can re-print that one item and the logo is ok. We can re-print the whole batch and almost always all the logos are fine. This happens on different computers and printers.

This happens in Delphi 7 and also in Delphi XE (duplicate code in each environment).

Is there any known issue we can address? Sounds like a timing loop issue to me, but I have no idea where it might be, except that we seem to have eliminated delphi and the printer driver. Here's the code, which I'm sure looks familiar.

procedure TMergeEngine.rtfTemplateMailMergeGetText(Sender: TObject;
  const inspname: String;  Contents: TWPMMInsertTextContents);
var
  wpobj : TWPOImage;
begin
                                      //vvv jhg 04/02/2013
  if UpperCase(inspname)='LOGO' then begin
   // A) - there is no image in this field
   if Contents.CurrentObject=nil then
   begin
      wpobj := TWPOImage.Create(rtfTemplate);
      if (rv.LenderLogo.Picture.Graphic<>nil) then begin 
        wpobj.Graphic := rv.Logo.Picture.Graphic;
        wpobj.WidthTW := wpobj.ContentsWidth;
        wpobj.HeightTW:= wpobj.ContentsHeight;
        Contents.obj  := wpobj;
      end;
   end
   else
   // B) There is an image, we replace the contents
     begin
       Contents.CurrentObject.Graphic := rv.Logo.Picture.Graphic;
     end;
  end
  else
    contents.StringValue := rv.propertyByName(inspname);
                                      //^^^ jhg 04/02/2013
end;

Hi,

if the logo in all the letters it can be a resource issue. You can also use the TextObjectPaint event to draw the logo there.

Anything we can do about resources? Are you talking about RAM? It seems that the problem has happened on XP machines, and once on a Vista box.

Resources are not just ram, that are handles for images, brushes etc.

I really don't know if a resource problem is the reason for the logo to not become printed.

In the TextObjectPaint you can draw the logo to the canvas - it is worth a try.

Julian