Re: [wxhaskell-devel] [wxhaskell-users] adapt layout after changing 'visible' state

[Henning T. <le...@he...>]

On Thu, 8 Dec 2011, Henning Thielemann wrote:

> I think the best place for documenting the solution is not the FAQ but the 
> documentation of the Visible class.

Here is my proposed patch:

wxhaskell/wx$ darcs2 diff --unified src/Graphics/UI/WX/Classes.hs
--- old-wxhaskell/wx/src/Graphics/UI/WX/Classes.hs      2011-12-08 19:45:56.000000000 +0100
+++ new-wxhaskell/wx/src/Graphics/UI/WX/Classes.hs      2011-12-08 19:45:56.000000000 +0100
@@ -173,6 +173,19 @@
  -- | Visible widgets.
  class Visible w where
    -- | Is the widget visible?
+  --
+  -- If you hide a widget, its space will not immediately
+  -- be filled by other widgets.
+  -- Vice versa if you make a widget visible
+  -- it will not have space to be rendered into.
+  -- That is, when changing the visibility state
+  -- it is advised to update the layout
+  -- using 'Graphics.UI.WX.Layout.windowReFit'.
+  --
+  -- Example:
+  --
+  -- > do set w [ visible := False ]
+  -- >    windowReFit w
    visible    :: Attr w Bool
    -- | Refresh the widget explicitly.
    refresh    :: w -> IO ()