+#define WINDOW_ATTRS(w) ((w)->_attrs)
+
+#define SCREEN_ATTRS(s) (*((s)->_current_attr))
+#define GET_SCREEN_PAIR(s) GetPair(SCREEN_ATTRS(s))
+#define SET_SCREEN_PAIR(s,p) SetPair(SCREEN_ATTRS(s), p)
+
+#if USE_REENTRANT
+NCURSES_EXPORT(int *) _nc_ptr_Lines (void);
+NCURSES_EXPORT(int *) _nc_ptr_Cols (void);
+#define ptrLines() (SP ? &(SP->_LINES) : &(_nc_prescreen._LINES))
+#define ptrCols() (SP ? &(SP->_COLS) : &(_nc_prescreen._COLS))
+#define SET_LINES(value) *_nc_ptr_Lines() = value
+#define SET_COLS(value) *_nc_ptr_Cols() = value
+#else
+#define ptrLines() &LINES
+#define ptrCols() &COLS
+#define SET_LINES(value) LINES = value
+#define SET_COLS(value) COLS = value
+#endif
+
+#define TR_MUTEX(data) _tracef("%s@%d: me:%08lX COUNT:%2u/%2d/%6d/%2d/%s%9u: " #data, \
+ __FILE__, __LINE__, \
+ (unsigned long) (pthread_self()), \
+ data.__data.__lock, \
+ data.__data.__count, \
+ data.__data.__owner, \
+ data.__data.__kind, \
+ (data.__data.__nusers > 5) ? " OOPS " : "", \
+ data.__data.__nusers)
+#define TR_GLOBAL_MUTEX(name) TR_MUTEX(_nc_globals.mutex_##name)
+
+#ifdef USE_PTHREADS
+
+#if USE_REENTRANT
+#include <pthread.h>
+extern NCURSES_EXPORT(void) _nc_init_pthreads(void);
+extern NCURSES_EXPORT(void) _nc_mutex_init(pthread_mutex_t *);
+extern NCURSES_EXPORT(int) _nc_mutex_lock(pthread_mutex_t *);
+extern NCURSES_EXPORT(int) _nc_mutex_trylock(pthread_mutex_t *);
+extern NCURSES_EXPORT(int) _nc_mutex_unlock(pthread_mutex_t *);
+#define _nc_lock_global(name) _nc_mutex_lock(&_nc_globals.mutex_##name)
+#define _nc_try_global(name) _nc_mutex_trylock(&_nc_globals.mutex_##name)
+#define _nc_unlock_global(name) _nc_mutex_unlock(&_nc_globals.mutex_##name)
+
+#else
+#error POSIX threads requires --enable-reentrant option
+#endif
+
+#if USE_WEAK_SYMBOLS
+#if defined(__GNUC__)
+# if defined __USE_ISOC99
+# define _cat_pragma(exp) _Pragma(#exp)
+# define _weak_pragma(exp) _cat_pragma(weak name)
+# else
+# define _weak_pragma(exp)
+# endif
+# define _declare(name) __extension__ extern __typeof__(name) name
+# define weak_symbol(name) _weak_pragma(name) _declare(name) __attribute__((weak))
+#endif
+#endif
+
+#ifdef USE_PTHREADS
+# if USE_WEAK_SYMBOLS
+weak_symbol(pthread_sigmask);
+weak_symbol(pthread_self);
+weak_symbol(pthread_equal);
+weak_symbol(pthread_mutex_init);
+weak_symbol(pthread_mutex_lock);
+weak_symbol(pthread_mutex_unlock);
+weak_symbol(pthread_mutex_trylock);
+weak_symbol(pthread_mutexattr_settype);
+extern NCURSES_EXPORT(int) _nc_sigprocmask(int, const sigset_t *, sigset_t *);
+# undef sigprocmask
+# define sigprocmask _nc_sigprocmask
+# endif
+#endif
+
+#if HAVE_NANOSLEEP
+#undef HAVE_NANOSLEEP
+#define HAVE_NANOSLEEP 0 /* nanosleep suspends all threads */
+#endif
+
+#else /* !USE_PTHREADS */
+
+#define _nc_init_pthreads() /* nothing */
+#define _nc_mutex_init(obj) /* nothing */
+
+#define _nc_lock_global(name) /* nothing */
+#define _nc_try_global(name) 0
+#define _nc_unlock_global(name) /* nothing */
+
+#endif /* USE_PTHREADS */
+
+#if HAVE_GETTIMEOFDAY
+# define PRECISE_GETTIME 1
+# define TimeType struct timeval
+#else
+# define PRECISE_GETTIME 0
+# define TimeType time_t
+#endif
+
+/*
+ * Definitions for color pairs
+ */
+typedef unsigned colorpair_t; /* type big enough to store PAIR_OF() */
+#define C_SHIFT 9 /* we need more bits than there are colors */
+#define C_MASK ((1 << C_SHIFT) - 1)
+#define PAIR_OF(fg, bg) ((((fg) & C_MASK) << C_SHIFT) | ((bg) & C_MASK))
+#define isDefaultColor(c) ((c) >= COLOR_DEFAULT || (c) < 0)
+
+#define COLOR_DEFAULT C_MASK
+
+#if defined(USE_TERMLIB) && !defined(NEED_NCURSES_CH_T)
+
+#undef NCURSES_CH_T /* this is not a termlib feature */
+#define NCURSES_CH_T void /* ...but we need a pointer in SCREEN */
+
+#endif /* USE_TERMLIB */
+
+#ifndef USE_TERMLIB