I can't reproduce this problem. My test program is below; it correctly
shows "foo" when I run it. Can you try to make a minimal example,
please?
~d
import Graphics.UI.Gtk
main = do
initGUI
w <- windowNew
w `onDestroy` mainQuit
p <- hPanedNew
v <- vBoxNew True 2
l <- labelNew (Just "foo")
containerAdd v l
panedAdd1 p (castToWidget v)
containerAdd w p
widgetShowAll w
mainGUI
Quoting [email protected]:
> Hello,
> I just found a fun bug in GTK2HS.
>
> <span class='hs-definition'>panedAdd1</span> <span
> class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span
> class='hs-conid'>PanedClass</span> <span
> class='hs-varid'>self</span><span class='hs-layout'>,</span> <span
> class='hs-conid'>WidgetClass</span> <span
> class='hs-varid'>child</span><span class='hs-layout'>)</span> <span
> class='hs-keyglyph'>=></span> <span class='hs-varid'>self</span>
> <a name='line-145'></a> <span class='hs-keyglyph'>-></span> <span
> class='hs-varid'>child</span> <span class='hs-comment'>-- ^ @child@
> - the child to add</span>
> <a name='line-146'></a> <span class='hs-keyglyph'>-></span> <span
> class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
> should be:
>
> <span class='hs-definition'>panedAdd1</span> <span
> class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span
> class='hs-conid'>PanedClass</span> <span
> class='hs-varid'>self</span><span class='hs-layout'>,</span>
> Container<span class='hs-conid'>Class</span> <span
> class='hs-varid'>child</span><span class='hs-layout'>)</span> <span
> class='hs-keyglyph'>=></span> <span class='hs-varid'>self</span>
> <a name='line-145'></a> <span class='hs-keyglyph'>-></span> <span
> class='hs-varid'>child</span> <span class='hs-comment'>-- ^ @child@
> - the child to add</span>
> <a name='line-146'></a> <span class='hs-keyglyph'>-></span> <span
> class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
> I found this, because I had a VBox that I used to pass directly to panedAdd
> 1.
> Then after a remodularization I ended up calling castToWidget on said VBox.
> This resulted in my VBox not being added to the Paned at all :(
> Interestingly, simply doing castToContainer again didn't save me. I had to
> create a new VBox to put my widgetized VBox into...
>
> Tim
>
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