Forum :: Programming :: Exiting a program outside main function

I m making a project with the allegro game library ,i could use int set_close_button_callback(void (*proc)(void)); which controls which function will be executed after clicking the x button then i do "allegro_exit()"  or std::exit(0) in the exit function, but my program won't exit well and it will be still open but not responding because i didn't return from the main function.

the only chance if i have is to do a while loop in the main function that performs stuff when the x button isn't clicked ,after the loop is done i could normally return from the main function,

however i don't think the while loop is good idea and it won't fit my program.

any chance of doing this in another way?

edit:problem solved using winapi,could have used winapi to kill the process but i had declaration conflicts when including windows.h, now i found that allegro has winalleg.h which is compatible. 

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