RgBGIfnt.PAS
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 { Example for RegisterBGIFont }

  uses Graph;
  var
    Driver, Mode: Integer;
    FontF: file;
    FontP: pointer;
  begin
    { Open font file, read, register }
    Assign(FontF, 'TRIP.CHR');
    Reset(FontF, 1);
    GetMem(FontP, FileSize(FontF));
    BlockRead(FontF, FontP^,
              FileSize(FontF));
    if RegisterBGIfont(FontP) < 0 then
    begin
      WriteLn('Error registering font: ',
              GraphErrorMsg(GraphResult));
      Halt(1);
    end;
    { Init graphics }
    Driver := Detect;
    InitGraph(Driver, Mode, '..\');
    if GraphResult < 0 then
      Halt(1);
    ReadLn;
    { Select registered font }
    SetTextStyle(TriplexFont, HorizDir, 4);
    OutText('Triplex loaded by user program');
    MoveTo(0, TextHeight('a'));
    ReadLn;
    { Select font to be loaded from disk }
    SetTextStyle(SansSerifFont, HorizDir, 4);
    OutText('Your disk should be spinning..');
    MoveTo(0, GetY + TextHeight('a'));
    ReadLn;
    { Re-select font (already in memory) }
    SetTextStyle(TriplexFont, HorizDir, 4);
    OutText('Back to Triplex');
    ReadLn;
    CloseGraph;
  end.