Follow-up: the same problems persist with ghc 6.10.1. On Monday 12 January 2009 09:30:58 Jeroen Janssen wrote: > Hey Mads, > > This seems to be correct. If I modify my testprogram to this: > > module Main where > > import Graphics.UI.WX > import System.IO > > main :: IO () > main > = do hPutStrLn stderr "WX checkpoint alpha" > --start hello > > hello :: IO () > hello > = do f <- frame [text := "Hello!"] > quit <- button f [text := "Quit", on command := close f] > set f [layout := widget quit] > > Where start does not even get called, I get the same errors and infinite > loop (without ever getting the "WX checkpoint alpha"). Removing the hello > function and the import function outputs the string correctly without any > errors. > > The strangest thing is that wxpython works flawlessly, so I am not sure > whether the problem is not in part due to some bug with ghc 6.8.3. > > On Monday 12 January 2009 00:33:05 Mads Lindstrøm wrote: > > Hi Jeroen > > > > I wrote: > > > Hi Jeroen > > > > > > While my windows show up just fine, I do get similar warnings to you: > > > > > > (process:12227): GLib-GObject-CRITICAL **: gtype.c:2240: initialization > > > assertion failed, use IA__g_type_init() prior to this function > > > > > > (process:12227): Gdk-CRITICAL **: gdk_cursor_new_for_display: assertion > > > `GDK_IS_DISPLAY (display)' failed > > > > > > (process:12227): GLib-GObject-CRITICAL **: gtype.c:2240: initialization > > > assertion failed, use IA__g_type_init() prior to this function > > > > > > (process:12227): Gdk-CRITICAL **: gdk_cursor_new_for_display: assertion > > > `GDK_IS_DISPLAY (display)' failed > > > > > > I think we to call g_type_init() > > > (http://library.gnome.org/devel/gobject/unstable/gobject-Type-Informati > > >on .html#g-type-init) somewhere in the wxHaskell code, to avoid these > > > warnings and possibly your wxHaskell to work. I am looking into it. > > > > I changed the start-function (in wx/src/Graphics/UI/WX.hs) from: > > > > -- | 'start' runs the GUI. > > start :: IO a -> IO () > > start io > > = run (unitIO io) > > > > to: > > > > -- | 'start' runs the GUI. > > start :: IO a -> IO () > > start io > > = do hPutStrLn stderr "WX checkpoint alpha" > > hFlush stderr > > run (unitIO io) > > > > And I now get the output: > > > > (process:14665): GLib-GObject-CRITICAL **: gtype.c:2240: initialization > > assertion failed, use IA__g_type_init() prior to this function > > > > (process:14665): Gdk-CRITICAL **: gdk_cursor_new_for_display: assertion > > `GDK_IS_DISPLAY (display)' failed > > > > (process:14665): GLib-GObject-CRITICAL **: gtype.c:2240: initialization > > assertion failed, use IA__g_type_init() prior to this function > > > > (process:14665): Gdk-CRITICAL **: gdk_cursor_new_for_display: assertion > > `GDK_IS_DISPLAY (display)' failed WX checkpoint alpha > > > > > > That is, the checkpoint comes _after_ the GLib error, and as the > > start-function is the very first function to be called, it leads me to > > conclude that the error is not with the Haskell code. So I assume it > > must be some library initialization. Unfortunately, I have no knowledge > > of whats gets called as part of library initialization and I do not know > > where to look. If anyway, can help me with this I would be most happy. > > > > > > Greetings > > > > Mads Lindstrøm > > > > > This bugs seems to be similar to what you (and I) are experiencing > > > https://bugzilla.redhat.com/show_bug.cgi?id=442977 . > > > > > > > > > Greetings, > > > > > > Mads Lindstrøm > > > > > > Jeroen Janssen wrote: > > > > Follow-up: > > > > > > > > With latest darcs version, showing revision 0.11.1 this time, this > > > > error does not occur any longer. However, wxhaskell is still not > > > > working as now programs fail with: > > > > > > > > (process:3353): GLib-GObject-CRITICAL > > > > **: /build/buildd/glib2.0-2.16.6/gobject/gtype.c:2248: initialization > > > > assertion failed, use IA__g_type_init() prior to this function > > > > > > > > (process:3353): GLib-CRITICAL **: g_once_init_leave: assertion > > > > `initialization_value != 0' failed > > > > > > > > (process:3353): Gdk-CRITICAL **: gdk_cursor_new_for_display: > > > > assertion `GDK_IS_DISPLAY (display)' failed > > > > > > > > This happens for the example I mentioned in my previous e-mail but > > > > also for the examples included with wxhaskell (BoxedCombinator etc). > > > > > > > > Any help with this? The parameters stayed the same as in my previous > > > > e-mail (Ubuntu 8.04, wxwidgets/wxgtk 2.8.7 ubuntu version), I even > > > > tried updating to wxwidgets 2.8.9, but to no avail, same error. > > > > I build wxhaskell with "cabal" install, followed by the cd wx en > > > > usual build process if that may be of any help. > > > > > > > > Kind regards, > > > > ------------------------------------------------------------------------- > >-- --- Check out the new SourceForge.net Marketplace. > > It is the best place to buy or sell services for > > just about anything Open Source. > > http://p.sf.net/sfu/Xq1LFB > > _______________________________________________ > > wxhaskell-users mailing list > > wxhaskell-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/wxhaskell-users > > --------------------------------------------------------------------------- >--- Check out the new SourceForge.net Marketplace. > It is the best place to buy or sell services for > just about anything Open Source. > http://p.sf.net/sfu/Xq1LFB > _______________________________________________ > wxhaskell-users mailing list > wxhaskell-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wxhaskell-users
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