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d_button_proc - Dialog procedure implementing a button object. Allegro game programming library.
#include <allegro.h> int d_button_proc(int msg, DIALOG *d, int c);
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.