d_button_proc - Dialog procedure implementing a button object. Allegro game programming library.

       A  button  object (the dp field points to the text string). This object can be selected by clicking on it
       with the mouse or by pressing its keyboard shortcut. If the D_EXIT flag is set, selecting it  will  close
       the  dialog,  otherwise  it will toggle on and off. Like d_text_proc(), ampersands can be used to display
       the keyboard shortcut of the button.

       d_button_proc - Dialog procedure implementing a button object. Allegro game programming library.

excustom(3alleg4), exgui(3alleg4)

Allegro                                           version 4.4.3                           d_button_proc(3alleg4)

#include<allegro.h>intd_button_proc(intmsg,DIALOG*d,intc);