:/
I just received your mail, when sending my last one saying i found it :(
So i did spent a few hours on it.
By the way, thanks :)
Lodesi
Le jeudi 08 septembre 2005 à 18:19 +0200, Jean-Christophe Duberga a
écrit :
> Laurent Defert Simonneau wrote:
>
> >I have commited the code i have written for the main menu using paragui.
> >But, there is a weird bug i can't find, so if someone want to have a
> >look, it would be great :)
> >It happens in the loop of the menu and/or in the callback function
> >(menu/main_menu.cpp - lines 71 to 80):
> >The callback functions of the buttons are called without any problem
> >(debug message displayed to the screen), but the variable corresponding
> >to the clicked button is overwritten, i don't know where, just after
> >leaving the callback function...
> >With gdb, i'm unable to trace/catch anything... With valgrind it crashes
> >when displaying the menu...
> >It may be a bad initialisation or a bad use of a paragui function, but
> >all the code is almost a copy of the dblbuffer exemple..
> >It seems to me, that it's caused by an overwritten stack, hard to trace
> >because of the threads :/
> >
> >
> Ok don't panic I have just checked that you were printing the variable
> choice of the same objects :
>
> *** src/menu/main_menu.cpp at line 71:
> bool sig_play()
> { menu.choice=menuPLAY;printf("\nsig %d [%p]",menu.choice,&menu);return
> true;}
>
> *** and src/menu/main_menu.cpp at line 165:
> printf("\n%d [%p]",choice, this);
>
> And... you can see that you don't affect the choice variable of the same
> object as you read it.
>
> > 0 [0x81356f0]
> > 0 [0x81356f0]
> > 0 [0x81356f0]
> > sig 1 [0x8060cac]
> > 0 [0x81356f0]
> > 0 [0x81356f0]
>
> In fact the variable is not overwritten but affected to the global
> object menu but the object used in the main loop to determine the choice
> is another one :
>
> file src/main.cpp at line 257:
>
> > Menu *menu = new Menu;
> > menu->Init();
> > choix = menu->Run();
>
> It is one that is dynamically allocated in the main program
>
> Hope that You don't have spended too much time on it ;-)
>
>
>
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