ref: e74727d7e806863494a92d4b5cdcefdeee7495e9
dir: /libwidget/button.h/
/*** Button ***/ typedef struct Button Button; struct Button { Widget; Widget *content; int pressed; /* don't touch */ Box *box; }; int isbutton(Widget*); Button* newbutton(Widget*); Button* newtextbutton(Font*, char *content); enum /* messages */ { M_BUTTON_PRESSED = C2I('b', 't', 'n', 'p'), M_BUTTON_RELEASED = C2I('b', 't', 'n', 'r') };