为GUN/Linux编程指南（第二版）一书中的全部代码

				#include 				#include 								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;				}