whats new ¦  programming tips ¦  indy articles ¦  intraweb articles ¦  informations ¦  links ¦  interviews
 misc ¦  tutorials ¦  Add&Win Game

Tips (1541)

Database (90)
Files (137)
Forms (107)
Graphic (114)
IDE (21)
Indy (5)
Internet / LAN (130)
IntraWeb (0)
Math (76)
Misc (126)
Multimedia (45)
Objects/
ActiveX (51)

OpenTools API (3)
Printing (35)
Strings (83)
System (266)
VCL (242)

Top15

Tips sort by
component


Search Tip

Add new Tip

Add&Win Game

Advertising

28 Visitors Online


 
...get the paper size in millimeters?
Autor: Simon Grossenbacher
Homepage: http://www.swissdelphicenter.ch
[ Print tip ]  

Tip Rating (9):  
     


uses
  
printers;

procedure TForm1.Button1Click(Sender: TObject);
var
  
papermmx, papermmy: Extended;
begin
  
Printer.BeginDoc;

  {
  PHYSICALWIDTH = Dots horizontal of the paper
  LOGPIXELSX    = DPI (Dots per Inch)
  25.4          = To calculte Inch to Millimeter
  }
  
papermmx := GetDeviceCaps(Printer.Canvas.Handle, PHYSICALWIDTH) /
    GetDeviceCaps(Printer.Canvas.Handle, LOGPIXELSX) * 25.4;
  papermmy := GetDeviceCaps(Printer.Canvas.Handle, PHYSICALHEIGHT) /
    GetDeviceCaps(Printer.Canvas.Handle, LOGPIXELSY) * 25.4;

  with Printer.Canvas do
  begin
    
TextOut(200, 100, floattostr(papermmx) + ' mm x ' + floattostr(papermmy) + ' mm');
  end;
  Printer.EndDoc;
end;


 

Rate this tip:

poor
very good


Copyright © by SwissDelphiCenter.ch
All trademarks are the sole property of their respective owners