Den 2015-12-22 kl. 01:36, skrev codekiddy:
Hey guys I solved all the issues and would like to share my findings!!
Recently I made several posts here on gtkmm-list having problems with
GTKMM on Windows with msvc builds, so as if
#define GTKMM_ATKMM_ENABLED is defined during compilation there will
be a runtime crash and
destruction problem with Glib::RefPtr<Pango::Layout> layout;
The problem was that I compiled ATKMM and PANGOMM with /vd2 compiler
switch, and that was causing program shutdown crash in
Atk::~Implementor and Layout::~Layout
I recompiled these 2 without the /vd2 option and with
GTKMM_ATKMM_ENABLED 1, now everything works just fine :D
I copied a simple test program from stackoverflow to test dynamic_cast
operator
http://stackoverflow.com/questions/8447799/how-can-i-workaround-this-visual-studio-compiler-bug
struct Base :
virtual public Glib::Object
{
Base() :Object()
{
// upcast and downcast
Object* o = static_cast<Object*>(this);
Base* b = dynamic_cast<Base*>(o);
std::cout << " this: " << this << " after cast: " << b;
// should be the same address
if (this != b)
std::cout << " check address: NOK";
else
std::cout << " check address: OK ";
}
};
struct Derived : public Base
{
int i;
};
int main()
{
Derived d;
std::cout << " end arrived: ";
std::stringstream* ss = new std::stringstream;
delete ss;
std::cout << "OK";
std::cin.get();
return 0;
}
And here is a program output after running a test:
*(test_dynamic_cast.exe:10464): GLib-GObject-CRITICAL **:
g_object_set_qdata_full: assertion 'quark > 0' failed*
*
*
* this: 0067F74C after cast: 0067F750 check address: NOK end arrived: OK*
*
*
what do you think? is this output OK? obviously the cast was
successful in the end, even though glib gives CRITICAL message in
beginning.
There was no crash! :D YES!
You must initialize glibmm before you use Glib::Object or any other
glibmm class. Add
Glib::init();
at the beginning of main().
Gtk::Application::create() initializes both glibmm and gtkmm, so in most
gtkmm programs you don't have to call any initialization function
explicitly.
Kjell
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