Re: GTK+ & C++

[Havoc Pennington <hp redhat com>]

John Schmerge <schmerge cyber com> writes:
>   I have a couple of very nasty questions for people out there...
>
> 1. Does anybody out there know if it is possible to compile glib & gtk+ using a
> c++ compiler?

No, you'd have to fix a bunch of implicit void* casts, C++ keyword
uses, and that kind of thing.

> 2. If the above cannot be done, does anybody have any experience w/ integrating
> c++ code that uses the language's exception handling capabilities w/ gtk+ -- I
> am starting to run into nasty problems of having a program core dump whenever an
> exception is thrown from a c++ code fragment that is called from the gtk
> mainloop...

You can't throw C++ exceptions through C code. You need to catch those
exceptions before they get back to GTK+.

Compiling GTK with a C++ compiler doesn't help; throwing an exception
through GTK functions would get GTK's internal data structures
mangled, leaking memory and causing segfaults. This will be true for
any C library. Using exceptions pretty much depends on using
destructors to clean up when an exception comes through.

So basically if you do exception-causing stuff from a signal handler,
you have to catch any exceptions in the handler itself, you can't
throw them through GTK.

Havoc