[gtkada] GtkAda-2.2.X with Gtk+-2.4 -- More information

[danielcheagle at ig.com.br]

Thank's for the excelente work!:-) 
[]'s seven turns,Dani:-) 

Jeffrey Creem wrote: 

>There was a thread a few weeks back about this. GtkAda does not 
>build/install against Gtk+-2.4. Since a 
>patch did not appear from the person who was going to look at it I thought 
>I'd take a quick look. I had suspected something (hopefully) trivial in the 
>C portion of the binding but this turned out to be a little tricky to fix. 
> 
>The problem is that GtkAda contains a copy of the GtkExtra widgets. 
GtkExtra 
>contains a a widget called 
>gtkcombobox. The problem is that Gtk+-2.4.2 has its own gtkcombobox with 
the 
>exact same name and exact same 
>include file name but it is not really source compatible with the old 
>GtkExtra version of the widget. 
> 
>It looks like there are probably about 3 choices here. 
> 
>1) Disable access to the old GtkExtra style gtkcombobox widget (and all of 
>its children) 
>2) Modify the misc_extra.c and GtkAda code to use the Gtk+-2.4 GtkCombobox 
>3) Modify the local gtkextra c code and associated misc_extra and Ada code 
>to avoid the name collisions. 
> 
>1 is obviously a poor choice because it breaks source compatibility with 
>older GtkAda releases 
>2 looks like it would be difficult to do as well because I see no obvious 
>way to use the official Gtk+-2.4.2 combobox to provide all of the features 
>of the old GtkExtra combobox 
>3 is not really techincally difficult however it has a few drawbacks 
>  a) I dont see any good way to correct it without renaming a .c and .h 
file 
>in the gtkextra directory. (note that there 
>      are probably some non good ways of avoiding the rename...but they are 
>ugly). The only ugly thing about the 
>      file rename approach is it makes any fix non-cvs-patch friendly 
>  b) It continues to make the GtkExtra combobox exist when (perhaps) people 
>should move to use the real 
>      one.... 
> 
>In any case I did come up with an approach that works (renaming 
>gtkcombobox.h and gtkcombobox.c in the 
>gtkextra directory to gtkextracombobox.h and gtkextracombobox.c and then 
>using a similar approach on macros 
>and typedefs of inserting an "extra" to make the name unique). 
> 
>With these changes in place things compile and the testgtk application 
seems 
>to run ok (This is a Solaris host) 
> 
>If anyone is interested I can create the patches. 
> 
>Also found and fixed a problem that prevented GCC 3.4 from compiling 
>gtkplot3d (in gtkextra) but it looks like that 
>already is in CVS. 

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