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Changing Default printer Dpi from my app

Posted on 1998-09-02
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Last Modified: 2010-04-04
Can anyone tell me how to change the default printer
DPI from my delphi App.
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Question by:Asw
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2 Comments
 
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BoRiS earned 400 total points
ID: 1338473
Asw

here is  a code snippet from a guy called lloyd,,.

Note:  Must be called AFTER Printer.BeginDoc.
 --------------------------------------------------------------}

function SetPrinterScale: TPoint;

var
  DeviceDpiX, DeviceDpiY : integer;
begin
  with Printer do begin
    DeviceDpiX := GetDeviceCaps(Handle, LOGPIXELSX);
    DeviceDpiY := GetDeviceCaps(Handle, LOGPIXELSY);
    SetMapMode(Handle, MM_ISOTROPIC);
    SetWindowExt(Handle, DeviceDpiX, DeviceDpiY);
    SetViewPortExt(Handle, DeviceDpiX, DeviceDpiY);
    Result := Point(PageWidth, PageHeight);
    with Canvas do begin
      DPtoLP(Handle, Result, 1); { This API call is required... }
      Font.PixelsPerInch := DeviceDpiY; { Manual setting is required to make this work. }
    end;
  end;
 end;

this function should be what you are looking for...

Later
BoRiS
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by:Asw
ID: 1338474
Thank you
Boris
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