uses 
  Inifiles; 

procedure SaveFont(FName: string; Section: string; smFont: TFont); 
var 
  FStream: TIniFile; 
begin 
  FStream := TIniFile.Create(FName); 
  try 
    FStream.WriteString(Section, 'Name', smFont.Name); 
    FStream.WriteInteger(Section, 'CharSet', smFont.CharSet); 
    FStream.WriteInteger(Section, 'Color', smFont.Color); 
    FStream.WriteInteger(Section, 'Size', smFont.Size); 
    FStream.WriteInteger(Section, 'Style', Byte(smFont.Style)); 
  finally 
    FStream.Free; 
  end; 
end; 

procedure LoadFont(FName: string; Section: string; smFont: TFont); 
var 
  FStream: TIniFile; 
begin 
  FStream := TIniFile.Create(Fname); 
  try 
    smFont.Name    := FStream.ReadString(Section, 'Name', smFont.Name); 
    smFont.CharSet := TFontCharSet(FStream.ReadInteger(Section, 'CharSet', smFont.CharSet)); 
    smFont.Color   := TColor(FStream.ReadInteger(Section, 'Color', smFont.Color)); 
    smFont.Size    := FStream.ReadInteger(Section, 'Size', smFont.Size); 
    smFont.Style   := TFontStyles(Byte(FStream.ReadInteger(Section, 'Style', Byte(smFont.Style)))); 
  finally 
    FStream.Free; 
  end; 
end; 

//Example: 
//Beispiel: 

//Save Font 
procedure TForm1.Button1Click(Sender: TObject); 
begin 
  SaveFont('font.ini', 'label', label1.Font); 
end; 

procedure TForm1.Label1DblClick(Sender: TObject); 
begin 
  if FontDialog1.Execute then 
    label1.Font := FontDialog1.Font 
end; 

//Load Font 
procedure TForm1.Button2Click(Sender: TObject); 
begin 
  LoadFont('font.ini', 'label', label1.Font); 
end;