#include <X11/Intrinsic.h>#include <X11/StringDefs.h>#include <X11/Xaw/MenuButton.h>#include <X11/Xaw/SimpleMenu.h>#include <X11/Xaw/Sme.h>#include <X11/Xaw/SmeBSB.h>XtAppContext application_context;void do_menu_selection(Widget item_selected, XtPointer unused1,		       XtPointer unused2) {  char * name = XtName(item_selected);  printf("Menu item `%s' has been selected.\n", name);  if (strcmp(name, "Exit program") == 0) {    XtDestroyApplicationContext(application_context);    exit(0);  }}String fallback_resources[] = {     "*menuButton.label: This is a menubutton label",    "*menu.label: Sample menu label",    NULL,};int main(int argc, char **argv) {    int i;    Widget top_level, menu_button, menu, menu_element;        char * menu_item_names[] = {	"Menu item1", "Menu item2", "Menu item3",	"Menu item4", "Exit program",    };    top_level = XtVaAppInitialize(&application_context, "testmenu", NULL, 0,			    &argc, argv, fallback_resources, 			    NULL);        menu_button = XtCreateManagedWidget("menuButton", menuButtonWidgetClass,					top_level, NULL, 0);        menu = XtCreatePopupShell("menu", simpleMenuWidgetClass, menu_button, 			      NULL, 0);        for (i = 0; i < (int)XtNumber(menu_item_names) ; i++) {      menu_element = XtCreateManagedWidget(menu_item_names[i],					   smeBSBObjectClass,					   menu, NULL, 0);      XtAddCallback(menu_element, XtNcallback, do_menu_selection, NULL);	    }        XtRealizeWidget(top_level);    XtAppMainLoop(application_context);    return 0;}