#include int main(int argc, char *argv[]) { FL_FORM *form; FL_OBJECT *yes, *no, *but; fl_initialize(&argc, argv, "FormDemo", 0, 0); form = fl_bgn_form(FL_UP_BOX, 320, 120); fl_add_box(FL_BORDER_BOX, 160, 40, 0, 0, \ "Do you want to Quit?"); yes = fl_add_button(FL_NORMAL_BUTTON, \ 40, 70, 80, 30, "Yes"); no = fl_add_button(FL_NORMAL_BUTTON, \ 200, 70, 80, 30, "No"); fl_end_form(); fl_show_form(form, FL_PLACE_MOUSE, FL_TRANSIENT, \ "Question"); while (1) { if (fl_do_forms() == yes { printf("Yes is pushed\n"); break; } else printf("No is pushed\n"); } fl_finish(); return 0; }