3666l1.orig100664 777 330 1670 7062321130 12134 0ustar ljeditorljedit3666l1 Listing 1. helloworld.c Program /* General header for the motif library */ #include /* Header for the Push Button Widget */ #include /* Prototype Callback function */ void pushedButton (Widget , XtPointer , XmPushButtonCallbackStruct *); main(int argc, char **argv) { Widget topWidget, button; XtAppContext app; topWidget = XtVaAppInitialize (&app, "Push", NULL, 0, &argc, argv, NULL, NULL); button = XmCreatePushButton(topWidget, "Hello World! Push me!", NULL, 0); /* tell Xt to manage button */ XtManageChild(button); /* Add a callback to the button widget */ XtAddCallback(button, XmNactivateCallback, pushedButton, NULL); XtRealizeWidget(topWidget); /* display widget hierarchy */ /* enter processing loop */ XtAppMainLoop(app); } void pushedButton (Widget w, XtPointer client_data, XmPushButtonCallbackStruct *cbs) { printf("Hello to you too!"\n); }