[wxhaskell-users] Re: wxWidgets question

[Daan L. <da...@cs...>]

Sean Seefried wrote:

> I'm displaying a bitmap inside a window and at some point I wish to load 
> a new bitmap.  When the bitmap is larger the window resizes really 
> nicely, but when I load a smaller bitmap the windows stays the same 
> size. I've tried a lot of things to get it to shrink again.  If I call 
> my top level frame 'f' then I have tried the following
 >
 > set [clientSize := Size 1 1]
 > set [outerSize := Size 1 1]
 >
 > But neither of these seems to do anything. Is there anything else I
 > should be looking at?

Hi Sean,

I think you should call "windowReFitMinimal"  (from "WXCore.Layout") on
the child widget (or "windowReLayoutMinimal" on the parent frame).

I don't think that you need to set a new layout if you are just drawing
the bitmap.

The whole size issue (initialSize vs. changing sizes) is somewhat 
obscure to me too -- it seems that wxWidgets is not so transparent
when dynamic layouts are involved. I suppose that everything is
possible but some things are much easier than others :-)

I hope this helps,
  -- Daan.

> 
> 
> I've done the correct thing with the layout.  I create a _new_ layout 
> each time I load a new bitmap and make sure that the old bitmap is deleted.
> 
> Sean
> 
> 
>