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"Resources"

Posted on 1997-04-01
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Last Modified: 2010-05-18
I used to program under Borland C++ 4 & 5. We have created
then a Special DLL which contained all dialogs/bitmaps/icons/strings. Naturally, we could easily
change the language by simply replacing the DLL (even on the fly). My question is: how do i make such a an "arrangement" using Delphi, and how do i keep my resources
centered in one DLL and NOWHERE ELSE....
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Question by:magid
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sperling earned 100 total points
ID: 1335091
Can't be done automatically.

I suggest you use the 'Tag' property of all components in your delphi program, and give this tag a value corresponding to the resource you've associated it with. Then, write a generic routine that looks through the Components array of a form, and replaces the appropriate values for each component with the resource having the 'Tag' ID.

I've used a similar setup for multilanguage development.
I would've got e.g. a Label with Tag 38, and the string resource 38 would look something like : "The caption|The short hint|The long hint|The help context"

Then, I used a loop something like this

procedure ReadResources (AForm : TForm);
.
.
.
for ndx := 0 to AForm.ComponentCount-1 do begin
  if AForm.Components[ndx].Tag<>0 then begin
    if AForm.Components[ndx] is TLabel then UpdateLabel(TLabel(AForm.Components[ndx]))
    else if ...


And, procedure UpdateLabel:

procedure UpdateLabel (ALabel : TLabel);
.
.
.
  ALabel.Caption := Copy (s, 1, Pos('|', s)-1);
  Delete(s, 1, Pos('|', s));
  ALabel.Hint := Copy (s, 1, Pos('|', s));
  Delete(s, 1, Pos('|', s));
  ALabel.Hint := ALabel.Hint + Copy (s, 1, Pos('|', s)-1);
  Delete(s, 1, Pos('|', s));
  ALabel.HelpContext := StrToIntDef(s, 0);
 

and so on.

Not sure whether this is what you asked, if not, leave me a comment...


Regards,

Erik.
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