Sdl/OpenGl Keyboard management

[code_glitch]

Found a stumbling block when doing some work on a map editor. I am building it all from the ground up and I at some point need to specify a file to load. Thus you must type out the path & name. However, sdl which I am using at the moment to manage my events has other plans:

Every time I hit backspace, Caps, Shift, Num and etc I get garbage data. The key registers but doesnt actually change all the keys to upercase or whatever they are supposed to be... is there either:
a) a sdl_enablecaps/num or something I am missing
b) a better way to manage eventd than sdl?

cheers,
code_glitch.

[User137]

This works for me:

Form1.Keypreview:=true;

procedure TForm1.FormKeyPress(Sender: TObject; var Key: char);
begin
  memo1.Lines.Add(key); // key will automatically be in caps/non caps
end;

[code_glitch]

Although I am not using delphi/lazarus here its just plain pascal.... So what units do you use to make that work? I might be able to take a look at the source and take what I need. Cheers for such a simple solution though.

[Chesso]

Is this cross platform, or could you just use the Windows API?

User137's solution involves using Delphi's VCL etc, the units Forms and I think Standard Controls (plus the units they use, so and so forth) would be the minimum, probably overkill for what you need.

[User137]

Actually Lazarus VCL to be precise. Compiler should be smart enough to only compile with those classes and functions that are actually used. I'm quite happy with 1Mb executable size with larger graphical projects, and that's before UPX pack.

As for the problem i don't know what key events are used for it. You might have some chance with checking if Shift key is held. Checking for Caps lock needs some crossplatform function which maybe Freepascal has. WinAPI maybe but that's Windows-only.

Edit: By shift i mean, 'A' is code 65 and 'a' is 97. Basically if shift is held, then reduce 32 from ascii value. This will not work with any other characters than A..Z.

[code_glitch]

Chesso: Yes, this is cross platform so windowze API is no go, especially since I don't use windowze...
User137: Yes, I am looking at doing a -32 on a-z keys automatically, but does it also work with caps, backspace and num lock?

I've had no luck at all getting it to work. So I guess there is no sdl function to do this? Or does anyone have an engine that has that functionality integrated (open source please)? I don't use lazarus so my plain fpc install wont have the VCL. My executable size is already knocking on 800k due to all the libs I'm using.

cheers,
code_glitch.