#include <Xm/Xm.h>#include <Xm/Text.h>void do_get_text(Widget widget, caddr_t client_data, caddr_t call_data) {  Widget text = (Widget)client_data;  char  *string = XmTextGetString(text);  printf("The Motif example text widget contains:\n%s\n", string);  XtFree(string);}void do_quit(Widget widget, caddr_t client_data, caddr_t call_data) {  exit(0);}int main(int argc, char **argv) {   Widget   top_level, pane, text, display_button, quit_button;   Arg      arg[5];   top_level = XtInitialize(argv[0], "test", NULL, 0, &argc, argv);   pane = XmCreatePanedWindow(top_level, "pane", NULL, 0);   XtSetArg(arg[0], XmNwidth, 400);   XtSetArg(arg[1], XmNheight, 400);   XtSetArg(arg[3], XmNwordWrap, TRUE);   XtSetArg(arg[4], XmNeditMode, XmMULTI_LINE_EDIT);   text = XmCreateText(pane, "text", arg, 5);   display_button = XmCreatePushButton(pane, "Display", NULL, 0);   quit_button = XmCreatePushButton(pane, "Quit", NULL, 0);   XtAddCallback(display_button, XmNactivateCallback, (XtCallbackProc)do_get_text, text);   XtAddCallback(quit_button, XmNactivateCallback, (XtCallbackProc)do_quit, NULL);   XtManageChild(text);   XtManageChild(display_button);   XtManageChild(quit_button);   XtManageChild(pane);   XtRealizeWidget(top_level);   XtMainLoop();   return 0;}