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Font property to INI file

Posted on 1998-11-03
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Last Modified: 2013-12-02
I am trying to save some component's Font property ini INI file:

with Memo1 do
begin
      IniFile.WriteString('Font desc', 'Name', Font.Name);
      IniFile.WriteInteger('Font desc', 'Color', Font.Color);
      IniFile.WriteInteger('Font desc', 'Size', Font.Size);
      IniFile.WriteInteger('Font desc', 'Style', Font.Style);
end;

but it fails at compiling last line, since Style is defined as

TFontStyle = (fsBold, fsItalic, fsUnderline, fsStrikeOut);
TFontStyles = set of TFontStyle;
property Style: TFontStyles;



Same with loading from INI

with Memo1 do
begin
      Font.Name := IniFile.ReadString('Font desc', 'Name', 'Arial');
      Font.Color := IniFile.ReadInteger('Font desc', 'Color', clBlack);
      Font.Size := IniFile.ReadInteger('Font desc', 'Size', 8);
      Font.Style := IniFile.ReadInteger('Font desc', 'Style', fsBold));
end;


How to save value of set variables (like Style) in INI
(apart from creating separate boolean key for every member of set)


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Question by:yuhoo
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2 Comments
 
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Accepted Solution

by:
scrapdog earned 50 total points
ID: 1345507
TFontStyle is an ordinal type.  You can convert it to an integer using the ord function.

IniFile.WriteInteger('Font desc', 'Style', ord(Font.Style));

When you read it in:

x := IniFile.ReadInteger('Font desc', 'Style', 0));
Font.Style := TFontStyle(x);

0
 
LVL 5

Expert Comment

by:scrapdog
ID: 1345508
I just realized that you want to store TFontStyles rather than TFontStyle.

Instead of using ord, you use a typecast.  A set is stored in a byte, so you can typecast it to a byte.

var x :longint;  

{to write}

x := Byte(Font.Style);
IniFile.WriteInteger('Font desc', 'Style', x);

{to read}
 
x := IniFile.ReadInteger('Font desc', 'Style', 0));
Font.Style := TFontStyles(Byte(x));


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