+#if HAVE_USE_WINDOW
+#define USING_SCREEN(s,func,data) use_screen(s, (NCURSES_SCREEN_CB) func, data)
+#define WANT_USE_SCREEN() extern void _nc_want_use_screen(void)
+#else
+#define USING_SCREEN(s,func,data) func(data)
+#define WANT_USE_SCREEN() extern void _nc_want_use_screen(void)
+#endif
+
+#if defined(TRACE) && HAVE__TRACEF
+#define Trace(p) _tracef p
+#define USE_TRACE 1
+#define START_TRACE() \
+ if ((_nc_tracing & TRACE_MAXIMUM) == 0) { \
+ int t = _nc_getenv_num("NCURSES_TRACE"); \
+ if (t >= 0) \
+ trace((unsigned) t); \
+ }
+extern unsigned _nc_tracing;
+extern int _nc_getenv_num(const char *);
+#else
+#undef TRACE
+#define Trace(p) /* nothing */
+#define USE_TRACE 0
+#define START_TRACE() /* nothing */
+#endif
+
+#define Trace2(p) /* nothing */
+
+#define AddCh(c) (void) addch((chtype)(c))
+#define WAddCh(w,c) (void) waddch((w),(chtype)(c))
+#define MvAddCh(y,x,c) (void) mvaddch((y),(x),(chtype)(c))
+#define MvWAddCh(w,y,x,c) (void) mvwaddch((w),(y),(x),(chtype)(c))
+#define MvAddStr(y,x,s) (void) mvaddstr((y),(x),(s))
+#define MvWAddStr(w,y,x,s) (void) mvwaddstr((w),(y),(x),(s))
+#define MvWAddChStr(w,y,x,s) (void) mvwaddchstr((w),(y),(x),(s))
+#define MvPrintw (void) mvprintw
+#define MvWPrintw (void) mvwprintw
+#define MvHLine (void) mvhline
+#define MvWHLine (void) mvwhline
+#define MvVLine (void) mvvline
+#define MvWVLine (void) mvwvline
+
+/*
+ * The macro likely uses unsigned values, while X/Open prototype uses int.
+ */
+#if defined(wattrset) || defined(PDCURSES)
+#define AttrArg(p,a) (chtype) ((chtype)(p) | (chtype)(a))
+#else
+#define AttrArg(p,a) (int) ((chtype)(p) | (chtype)(a))
+#endif
+
+/*
+ * Workaround for defective implementation of gcc attribute warn_unused_result
+ */
+#if defined(__GNUC__) && defined(_FORTIFY_SOURCE)
+#define IGNORE_RC(func) errno = func
+#else
+#define IGNORE_RC(func) (void) func
+#endif /* gcc workarounds */
+
+#define init_mb(state) memset(&state, 0, sizeof(state))