+#if USE_GPM_SUPPORT
+#undef buttons /* term.h defines this, and gpm uses it! */
+#include <gpm.h>
+
+#ifdef HAVE_LIBDL
+/* link dynamically to GPM */
+typedef int *TYPE_gpm_fd;
+typedef int (*TYPE_Gpm_Open) (Gpm_Connect *, int);
+typedef int (*TYPE_Gpm_Close) (void);
+typedef int (*TYPE_Gpm_GetEvent) (Gpm_Event *);
+
+#define my_gpm_fd SP->_mouse_gpm_fd
+#define my_Gpm_Open SP->_mouse_Gpm_Open
+#define my_Gpm_Close SP->_mouse_Gpm_Close
+#define my_Gpm_GetEvent SP->_mouse_Gpm_GetEvent
+#else
+/* link statically to GPM */
+#define my_gpm_fd &gpm_fd
+#define my_Gpm_Open Gpm_Open
+#define my_Gpm_Close Gpm_Close
+#define my_Gpm_GetEvent Gpm_GetEvent
+#endif /* HAVE_LIBDL */
+#endif /* USE_GPM_SUPPORT */
+
+typedef struct {
+ long sequence;
+ bool last_used;
+ char *fix_sgr0; /* this holds the filtered sgr0 string */
+ char *last_bufp; /* help with fix_sgr0 leak */
+ TERMINAL *last_term;
+} TGETENT_CACHE;
+
+#define TGETENT_MAX 4
+
+/*
+ * State of tparm().
+ */
+#define STACKSIZE 20
+
+typedef struct {
+ union {
+ int num;
+ char *str;
+ } data;
+ bool num_type;
+} STACK_FRAME;
+
+#define NUM_VARS 26
+
+typedef struct {
+#ifdef TRACE
+ const char *tname;
+#endif
+ const char *tparam_base;
+
+ STACK_FRAME stack[STACKSIZE];
+ int stack_ptr;
+
+ char *out_buff;
+ size_t out_size;
+ size_t out_used;
+
+ char *fmt_buff;
+ size_t fmt_size;
+
+ int dynamic_var[NUM_VARS];
+ int static_vars[NUM_VARS];
+} TPARM_STATE;
+
+typedef struct {
+ char *text;
+ size_t size;
+} TRACEBUF;
+
+/*
+ * TRACEMSE_FMT is no longer than 80 columns, there are 5 numbers that
+ * could at most have 10 digits, and the mask contains no more than 32 bits
+ * with each bit representing less than 15 characters. Usually the whole
+ * string is less than 80 columns, but this buffer size is an absolute
+ * limit.
+ */
+#define TRACEMSE_MAX (80 + (5 * 10) + (32 * 15))
+#define TRACEMSE_FMT "id %2d at (%2d, %2d, %2d) state %4lx = {" /* } */
+
+/*
+ * Global data which is not specific to a screen.
+ */
+typedef struct {
+ SIG_ATOMIC_T have_sigwinch;
+ SIG_ATOMIC_T cleanup_nested;
+
+ bool init_signals;
+ bool init_screen;
+
+ const char *comp_sourcename;
+ char *comp_termtype;
+
+ bool have_tic_directory;
+ bool keep_tic_directory;
+ const char *tic_directory;
+
+ char *dbi_list;
+ int dbi_size;
+
+ char *first_name;
+ char **keyname_table;
+
+ char *safeprint_buf;
+ size_t safeprint_used;
+
+ TGETENT_CACHE tgetent_cache[TGETENT_MAX];
+ int tgetent_index;
+ long tgetent_sequence;
+
+#if USE_HOME_TERMINFO
+ char *home_terminfo;
+#endif
+
+#if !USE_SAFE_SPRINTF
+ int safeprint_cols;
+ int safeprint_rows;
+#endif
+
+#ifdef TRACE
+ bool init_trace;
+ char trace_fname[PATH_MAX];
+ int trace_level;
+ FILE *trace_fp;
+
+ char *tracearg_buf;
+ size_t tracearg_used;
+
+ TRACEBUF *tracebuf_ptr;
+ size_t tracebuf_used;
+
+ char tracechr_buf[40];
+
+ char *tracedmp_buf;
+ size_t tracedmp_used;
+
+ char tracemse_buf[TRACEMSE_MAX];
+
+ unsigned char *tracetry_buf;
+ size_t tracetry_used;
+
+#ifndef USE_TERMLIB
+ char traceatr_color_buf[2][80];
+ int traceatr_color_sel;
+ int traceatr_color_last;
+#endif /* USE_TERMLIB */
+
+#endif /* TRACE */
+} NCURSES_GLOBALS;
+
+extern NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals;
+
+#define N_RIPS 5
+
+/*
+ * Global data which is swept up into a SCREEN when one is created.
+ * It may be modified before the next SCREEN is created.
+ */
+typedef struct {
+ bool use_env;
+ bool filter_mode;
+ attr_t previous_attr;
+ ripoff_t rippedoff[N_RIPS];
+ ripoff_t *rsp;
+ TPARM_STATE tparm_state;
+ TTY *saved_tty; /* savetty/resetty information */
+#if BROKEN_LINKER || USE_REENTRANT
+ chtype *real_acs_map;
+ int _LINES;
+ int _COLS;
+#endif
+} NCURSES_PRESCREEN;
+
+extern NCURSES_EXPORT_VAR(NCURSES_PRESCREEN) _nc_prescreen;
+
+/*
+ * The SCREEN structure.
+ */
+
+struct screen {
+ int _ifd; /* input file ptr for screen */
+ FILE *_ofp; /* output file ptr for screen */
+ char *_setbuf; /* buffered I/O for output */
+ bool _filtered; /* filter() was called */
+ bool _buffered; /* setvbuf uses _setbuf data */
+ int _checkfd; /* filedesc for typeahead check */
+ TERMINAL *_term; /* terminal type information */
+ TTY _saved_tty; /* savetty/resetty information */
+ NCURSES_SIZE_T _lines; /* screen lines */
+ NCURSES_SIZE_T _columns; /* screen columns */
+
+ NCURSES_SIZE_T _lines_avail; /* lines available for stdscr */
+ NCURSES_SIZE_T _topstolen; /* lines stolen from top */
+
+ WINDOW *_curscr; /* current screen */
+ WINDOW *_newscr; /* virtual screen to be updated to */
+ WINDOW *_stdscr; /* screen's full-window context */
+
+ TRIES *_keytry; /* "Try" for use with keypad mode */
+ TRIES *_key_ok; /* Disabled keys via keyok(,FALSE) */
+ bool _tried; /* keypad mode was initialized */
+ bool _keypad_on; /* keypad mode is currently on */
+
+ bool _called_wgetch; /* check for recursion in wgetch() */
+ int _fifo[FIFO_SIZE]; /* input push-back buffer */
+ short _fifohead, /* head of fifo queue */
+ _fifotail, /* tail of fifo queue */
+ _fifopeek, /* where to peek for next char */
+ _fifohold; /* set if breakout marked */
+
+ int _endwin; /* are we out of window mode? */
+ NCURSES_CH_T *_current_attr; /* holds current attributes set */
+ int _coloron; /* is color enabled? */
+ int _color_defs; /* are colors modified */
+ int _cursor; /* visibility of the cursor */
+ int _cursrow; /* physical cursor row */
+ int _curscol; /* physical cursor column */
+ bool _notty; /* true if we cannot switch non-tty */
+ int _nl; /* True if NL -> CR/NL is on */
+ int _raw; /* True if in raw mode */
+ int _cbreak; /* 1 if in cbreak mode */
+ /* > 1 if in halfdelay mode */
+ int _echo; /* True if echo on */
+ int _use_meta; /* use the meta key? */
+ struct _SLK *_slk; /* ptr to soft key struct / NULL */
+ int slk_format; /* selected format for this screen */