ncurses 5.9 - patch 20111022
[ncurses.git] / form / form.h
index 77fd9506caf0462fc794997a6133d05cd56a1dbb..f52893b952d6fb5ac89d88fb4aa5f4593d62c36a 100644 (file)
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc.                        *
+ * Copyright (c) 1998-2004,2009 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
  ****************************************************************************/
 
 /****************************************************************************
- *   Author: Juergen Pfeifer <Juergen.Pfeifer@T-Online.de> 1995,1997        *
+ *   Author:  Juergen Pfeifer, 1995,1997                                    *
  ****************************************************************************/
 
+/* $Id: form.h,v 0.21 2009/11/07 19:31:11 tom Exp $ */
+
 #ifndef FORM_H
 #define FORM_H
 
   extern "C" {
 #endif
 
+#ifndef FORM_PRIV_H
+typedef void *FIELD_CELL;
+#endif
+
+#ifndef NCURSES_FIELD_INTERNALS
+#define NCURSES_FIELD_INTERNALS /* nothing */
+#endif
+
 typedef int Form_Options;
 typedef int Field_Options;
 
@@ -48,10 +58,10 @@ typedef int Field_Options;
        **********/
 
 typedef struct {
-  short        pmin;     /* index of first field on page            */
-  short        pmax;     /* index of last field on page             */
-  short        smin;     /* index of top leftmost field on page     */
-  short        smax;     /* index of bottom rightmost field on page */
+  short pmin;          /* index of first field on page                 */
+  short pmax;          /* index of last field on page                  */
+  short smin;          /* index of top leftmost field on page          */
+  short smax;          /* index of bottom rightmost field on page      */
 } _PAGE;
 
        /**********
@@ -59,86 +69,117 @@ typedef struct {
        **********/
 
 typedef struct fieldnode {
-  unsigned short               status;   /* flags                      */
-  short                        rows;     /* size in rows               */
-  short                        cols;     /* size in cols               */
-  short                        frow;     /* first row                  */
-  short                        fcol;     /* first col                  */
-  int                   drows;    /* dynamic rows               */
-  int                   dcols;    /* dynamic cols               */
-  int                   maxgrow;  /* maximum field growth       */
-  int                  nrow;     /* offscreen rows             */
-  short                        nbuf;     /* additional buffers         */
-  short                        just;     /* justification              */
-  short                        page;     /* page on form               */
-  short                        index;    /* into form -> field         */
-  int                  pad;      /* pad character              */
-  chtype               fore;     /* foreground attribute       */
-  chtype               back;     /* background attribute       */
-  Field_Options                opts;     /* options                    */
-  struct fieldnode *   snext;    /* sorted order pointer       */
-  struct fieldnode *   sprev;    /* sorted order pointer       */
-  struct fieldnode *   link;     /* linked field chain         */
-  struct formnode *    form;     /* containing form            */
-  struct typenode *    type;     /* field type                 */
-  void *               arg;      /* argument for type          */
-  char *               buf;      /* field buffers              */
-  void *               usrptr;   /* user pointer               */
+  unsigned short       status;         /* flags                        */
+  short                        rows;           /* size in rows                 */
+  short                        cols;           /* size in cols                 */
+  short                        frow;           /* first row                    */
+  short                        fcol;           /* first col                    */
+  int                  drows;          /* dynamic rows                 */
+  int                  dcols;          /* dynamic cols                 */
+  int                  maxgrow;        /* maximum field growth         */
+  int                  nrow;           /* off-screen rows              */
+  short                        nbuf;           /* additional buffers           */
+  short                        just;           /* justification                */
+  short                        page;           /* page on form                 */
+  short                        index;          /* into form -> field           */
+  int                  pad;            /* pad character                */
+  chtype               fore;           /* foreground attribute         */
+  chtype               back;           /* background attribute         */
+  Field_Options                opts;           /* options                      */
+  struct fieldnode *   snext;          /* sorted order pointer         */
+  struct fieldnode *   sprev;          /* sorted order pointer         */
+  struct fieldnode *   link;           /* linked field chain           */
+  struct formnode *    form;           /* containing form              */
+  struct typenode *    type;           /* field type                   */
+  void *               arg;            /* argument for type            */
+  FIELD_CELL *         buf;            /* field buffers                */
+  void *               usrptr;         /* user pointer                 */
+  /*
+   * The wide-character configuration requires extra information.  Because
+   * there are existing applications that manipulate the members of FIELD
+   * directly, we cannot make the struct opaque.  Offsets of members up to
+   * this point are the same in the narrow- and wide-character configuration.
+   * But note that the type of buf depends on the configuration, and is made
+   * opaque for that reason.
+   */
+  NCURSES_FIELD_INTERNALS
 } FIELD;
 
-       /**************
-       *  FIELDTYPE  *
-       **************/
-
-typedef struct typenode {
-  unsigned short       status;                /* flags                */
-  long                 ref;                   /* reference count      */
-  struct typenode *    left;                  /* ptr to operand for | */
-  struct typenode *    right;                 /* ptr to operand for | */
-
-  void* (*makearg)(va_list *);                 /* make fieldtype arg   */
-  void* (*copyarg)(const void *);              /* copy fieldtype arg   */
-  void  (*freearg)(void *);                    /* free fieldtype arg   */
-
-  bool (*fcheck)(FIELD *,const void *);       /* field validation     */
-  bool (*ccheck)(int,const void *);           /* character validation */
-
-  bool (*next)(FIELD *,const void *);         /* enumerate next value */
-  bool (*prev)(FIELD *,const void *);         /* enumerate prev value */
-
-} FIELDTYPE;
 
        /*********
        *  FORM  *
        *********/
 
 typedef struct formnode {
-  unsigned short       status;   /* flags                      */
-  short                        rows;     /* size in rows               */
-  short                        cols;     /* size in cols               */
-  int                  currow;   /* current row in field window*/
-  int                  curcol;   /* current col in field window*/
-  int                  toprow;   /* in scrollable field window */
-  int                   begincol; /* in horiz. scrollable field */
-  short                        maxfield; /* number of fields           */
-  short                        maxpage;  /* number of pages            */
-  short                        curpage;  /* index into page            */
-  Form_Options         opts;     /* options                    */
-  WINDOW *             win;      /* window                     */
-  WINDOW *             sub;      /* subwindow                  */
-  WINDOW *             w;        /* window for current field   */
-  FIELD **             field;    /* field [maxfield]           */
-  FIELD *              current;  /* current field              */
-  _PAGE *              page;     /* page [maxpage]             */
-  void *               usrptr;   /* user pointer               */
-
-  void                  (*forminit)(struct formnode *);
-  void                  (*formterm)(struct formnode *);
-  void                  (*fieldinit)(struct formnode *);
-  void                  (*fieldterm)(struct formnode *);
+  unsigned short       status;         /* flags                        */
+  short                        rows;           /* size in rows                 */
+  short                        cols;           /* size in cols                 */
+  int                  currow;         /* current row in field window  */
+  int                  curcol;         /* current col in field window  */
+  int                  toprow;         /* in scrollable field window   */
+  int                  begincol;       /* in horiz. scrollable field   */
+  short                        maxfield;       /* number of fields             */
+  short                        maxpage;        /* number of pages              */
+  short                        curpage;        /* index into page              */
+  Form_Options         opts;           /* options                      */
+  WINDOW *             win;            /* window                       */
+  WINDOW *             sub;            /* subwindow                    */
+  WINDOW *             w;              /* window for current field     */
+  FIELD **             field;          /* field [maxfield]             */
+  FIELD *              current;        /* current field                */
+  _PAGE *              page;           /* page [maxpage]               */
+  void *               usrptr;         /* user pointer                 */
+
+  void                 (*forminit)(struct formnode *);
+  void                 (*formterm)(struct formnode *);
+  void                 (*fieldinit)(struct formnode *);
+  void                 (*fieldterm)(struct formnode *);
 
 } FORM;
 
+
+       /**************
+       *  FIELDTYPE  *
+       **************/
+
+typedef struct typenode {
+  unsigned short       status;                 /* flags                    */
+  long                 ref;                    /* reference count          */
+  struct typenode *    left;                   /* ptr to operand for |     */
+  struct typenode *    right;                  /* ptr to operand for |     */
+
+  void* (*makearg)(va_list *);                 /* make fieldtype arg       */
+  void* (*copyarg)(const void *);              /* copy fieldtype arg       */
+  void (*freearg)(void *);                     /* free fieldtype arg       */
+
+#if NCURSES_INTEROP_FUNCS
+  union {
+    bool (*ofcheck)(FIELD *,const void *);     /* field validation         */
+    bool (*gfcheck)(FORM*,FIELD *,const void*);        /* generic field validation */
+  } fieldcheck;
+  union {
+    bool (*occheck)(int,const void *);         /* character validation     */
+    bool (*gccheck)(int,FORM*,
+                   FIELD*,const void*);        /* generic char validation  */
+  } charcheck;
+  union {
+    bool (*onext)(FIELD *,const void *);        /* enumerate next value     */
+    bool (*gnext)(FORM*,FIELD*,const void*);    /* generic enumerate next   */
+  } enum_next;
+  union {
+    bool (*oprev)(FIELD *,const void *);       /* enumerate prev value     */
+    bool (*gprev)(FORM*,FIELD*,const void*);    /* generic enumerate prev   */
+  } enum_prev;
+  void* (*genericarg)(void*);                   /* Alternate Arg method     */
+#else
+  bool (*fcheck)(FIELD *,const void *);        /* field validation     */
+  bool (*ccheck)(int,const void *);            /* character validation */
+
+  bool (*next)(FIELD *,const void *);          /* enumerate next value */
+  bool (*prev)(FIELD *,const void *);          /* enumerate prev value */
+#endif
+} FIELDTYPE;
+
 typedef void (*Form_Hook)(FORM *);
 
        /***************************
@@ -152,20 +193,20 @@ typedef void (*Form_Hook)(FORM *);
 #define JUSTIFY_RIGHT          (3)
 
 /* field options */
-#define O_VISIBLE              (0x0001)
-#define O_ACTIVE               (0x0002)
-#define O_PUBLIC               (0x0004)
-#define O_EDIT                 (0x0008)
-#define O_WRAP                 (0x0010)
-#define O_BLANK                        (0x0020)
-#define O_AUTOSKIP             (0x0040)
-#define O_NULLOK               (0x0080)
-#define O_PASSOK               (0x0100)
-#define O_STATIC                (0x0200)
+#define O_VISIBLE              (0x0001U)
+#define O_ACTIVE               (0x0002U)
+#define O_PUBLIC               (0x0004U)
+#define O_EDIT                 (0x0008U)
+#define O_WRAP                 (0x0010U)
+#define O_BLANK                        (0x0020U)
+#define O_AUTOSKIP             (0x0040U)
+#define O_NULLOK               (0x0080U)
+#define O_PASSOK               (0x0100U)
+#define O_STATIC               (0x0200U)
 
 /* form options */
-#define O_NL_OVERLOAD          (0x0001)
-#define O_BS_OVERLOAD          (0x0002)
+#define O_NL_OVERLOAD          (0x0001U)
+#define O_BS_OVERLOAD          (0x0002U)
 
 /* form driver commands */
 #define REQ_NEXT_PAGE   (KEY_MAX + 1)  /* move to next page            */
@@ -207,7 +248,7 @@ typedef void (*Form_Hook)(FORM *);
 #define REQ_DEL_CHAR    (KEY_MAX + 34) /* delete char at cursor        */
 #define REQ_DEL_PREV    (KEY_MAX + 35) /* delete char before cursor    */
 #define REQ_DEL_LINE    (KEY_MAX + 36) /* delete line at cursor        */
-#define REQ_DEL_WORD    (KEY_MAX + 37) /* delete line at cursor        */
+#define REQ_DEL_WORD    (KEY_MAX + 37) /* delete word at cursor        */
 #define REQ_CLR_EOL     (KEY_MAX + 38) /* clear to end of line         */
 #define REQ_CLR_EOF     (KEY_MAX + 39) /* clear to end of field        */
 #define REQ_CLR_FIELD   (KEY_MAX + 40) /* clear entire field           */
@@ -217,14 +258,14 @@ typedef void (*Form_Hook)(FORM *);
 #define REQ_SCR_BLINE   (KEY_MAX + 44) /* scroll field backward a line */
 #define REQ_SCR_FPAGE   (KEY_MAX + 45) /* scroll field forward a page  */
 #define REQ_SCR_BPAGE   (KEY_MAX + 46) /* scroll field backward a page */
-#define REQ_SCR_FHPAGE   (KEY_MAX + 47) /* scroll field forward  half page */
-#define REQ_SCR_BHPAGE   (KEY_MAX + 48) /* scroll field backward half page */
-#define REQ_SCR_FCHAR    (KEY_MAX + 49) /* horizontal scroll char          */
-#define REQ_SCR_BCHAR    (KEY_MAX + 50) /* horizontal scroll char          */
-#define REQ_SCR_HFLINE   (KEY_MAX + 51) /* horizontal scroll line          */
-#define REQ_SCR_HBLINE   (KEY_MAX + 52) /* horizontal scroll line          */
-#define REQ_SCR_HFHALF   (KEY_MAX + 53) /* horizontal scroll half line     */
-#define REQ_SCR_HBHALF   (KEY_MAX + 54) /* horizontal scroll half line     */
+#define REQ_SCR_FHPAGE  (KEY_MAX + 47) /* scroll field forward  half page */
+#define REQ_SCR_BHPAGE  (KEY_MAX + 48) /* scroll field backward half page */
+#define REQ_SCR_FCHAR   (KEY_MAX + 49) /* horizontal scroll char       */
+#define REQ_SCR_BCHAR   (KEY_MAX + 50) /* horizontal scroll char       */
+#define REQ_SCR_HFLINE  (KEY_MAX + 51) /* horizontal scroll line       */
+#define REQ_SCR_HBLINE  (KEY_MAX + 52) /* horizontal scroll line       */
+#define REQ_SCR_HFHALF  (KEY_MAX + 53) /* horizontal scroll half line  */
+#define REQ_SCR_HBHALF  (KEY_MAX + 54) /* horizontal scroll half line  */
 
 #define REQ_VALIDATION  (KEY_MAX + 55) /* validate field               */
 #define REQ_NEXT_CHOICE         (KEY_MAX + 56) /* display next field choice    */
@@ -246,140 +287,133 @@ typedef void (*Form_Hook)(FORM *);
        /*************************
        *  standard field types  *
        *************************/
-extern FIELDTYPE *TYPE_ALPHA,
-                 *TYPE_ALNUM,
-                 *TYPE_ENUM,
-                 *TYPE_INTEGER,
-                 *TYPE_NUMERIC,
-                 *TYPE_REGEXP;
-
-        /************************************
+extern NCURSES_EXPORT_VAR(FIELDTYPE *) TYPE_ALPHA;
+extern NCURSES_EXPORT_VAR(FIELDTYPE *) TYPE_ALNUM;
+extern NCURSES_EXPORT_VAR(FIELDTYPE *) TYPE_ENUM;
+extern NCURSES_EXPORT_VAR(FIELDTYPE *) TYPE_INTEGER;
+extern NCURSES_EXPORT_VAR(FIELDTYPE *) TYPE_NUMERIC;
+extern NCURSES_EXPORT_VAR(FIELDTYPE *) TYPE_REGEXP;
+
+       /************************************
        *  built-in additional field types  *
-        *  They are not defined in SVr4     *
+       *  They are not defined in SVr4     *
        ************************************/
-extern FIELDTYPE *TYPE_IPV4;      /* Internet IP Version 4 address */
-
-        /*********************** 
-        *   Default objects    *
-        ***********************/ 
-extern FORM  *_nc_Default_Form;
-extern FIELD *_nc_Default_Field;
-
+extern NCURSES_EXPORT_VAR(FIELDTYPE *) TYPE_IPV4;      /* Internet IP Version 4 address */
 
        /***********************
        *  FIELDTYPE routines  *
        ***********************/
-extern FIELDTYPE 
-                *new_fieldtype(
+extern NCURSES_EXPORT(FIELDTYPE *) new_fieldtype (
                    bool (* const field_check)(FIELD *,const void *),
-                   bool (* const char_check)(int,const void *)),
-                *link_fieldtype(FIELDTYPE *,FIELDTYPE *);
+                   bool (* const char_check)(int,const void *));
+extern NCURSES_EXPORT(FIELDTYPE *) link_fieldtype(
+                   FIELDTYPE *, FIELDTYPE *);
 
-extern int      free_fieldtype(FIELDTYPE *),
-                set_fieldtype_arg(FIELDTYPE *,
+extern NCURSES_EXPORT(int)     free_fieldtype (FIELDTYPE *);
+extern NCURSES_EXPORT(int)     set_fieldtype_arg (FIELDTYPE *,
                    void * (* const make_arg)(va_list *),
                    void * (* const copy_arg)(const void *),
-                   void (* const free_arg)(void *)),
-                set_fieldtype_choice (FIELDTYPE *,
+                   void (* const free_arg)(void *));
+extern NCURSES_EXPORT(int)      set_fieldtype_choice (FIELDTYPE *,
                    bool (* const next_choice)(FIELD *,const void *),
                    bool (* const prev_choice)(FIELD *,const void *));
 
        /*******************
        *  FIELD routines  *
        *******************/
-extern FIELD    *new_field(int,int,int,int,int,int),
-                *dup_field(FIELD *,int,int),
-                *link_field(FIELD *,int,int);
-
-extern int      free_field(FIELD *),
-                field_info(const FIELD *,int *,int *,int *,int *,int *,int *),
-                dynamic_field_info(const FIELD *,int *,int *,int *),
-                set_max_field( FIELD *,int),
-                move_field(FIELD *,int,int),
-                set_field_type(FIELD *,FIELDTYPE *,...),
-                set_new_page(FIELD *,bool),
-                set_field_just(FIELD *,int),
-                field_just(const FIELD *),
-                set_field_fore(FIELD *,chtype),
-                set_field_back(FIELD *,chtype),
-                set_field_pad(FIELD *,int),
-                field_pad(const FIELD *),
-                set_field_buffer(FIELD *,int,const char *),
-                set_field_status(FIELD *,bool),
-                set_field_userptr(FIELD *, void *),
-                set_field_opts(FIELD *,Field_Options),
-                field_opts_on(FIELD *,Field_Options),
-                field_opts_off(FIELD *,Field_Options);
-
-extern chtype   field_fore(const FIELD *),
-                field_back(const FIELD *);
-
-extern bool     new_page(const FIELD *),
-                field_status(const FIELD *);
-
-extern void     *field_arg(const FIELD *);
-
-extern void     *field_userptr(const FIELD *);
-
-extern FIELDTYPE
-                *field_type(const FIELD *);
-
-extern char*    field_buffer(const FIELD *,int);
-
-extern Field_Options  
-                field_opts(const FIELD *);
+extern NCURSES_EXPORT(FIELD *) new_field (int,int,int,int,int,int);
+extern NCURSES_EXPORT(FIELD *) dup_field (FIELD *,int,int);
+extern NCURSES_EXPORT(FIELD *) link_field (FIELD *,int,int);
+
+extern NCURSES_EXPORT(int)     free_field (FIELD *);
+extern NCURSES_EXPORT(int)     field_info (const FIELD *,int *,int *,int *,int *,int *,int *);
+extern NCURSES_EXPORT(int)     dynamic_field_info (const FIELD *,int *,int *,int *);
+extern NCURSES_EXPORT(int)     set_max_field ( FIELD *,int);
+extern NCURSES_EXPORT(int)     move_field (FIELD *,int,int);
+extern NCURSES_EXPORT(int)     set_field_type (FIELD *,FIELDTYPE *,...);
+extern NCURSES_EXPORT(int)     set_new_page (FIELD *,bool);
+extern NCURSES_EXPORT(int)     set_field_just (FIELD *,int);
+extern NCURSES_EXPORT(int)     field_just (const FIELD *);
+extern NCURSES_EXPORT(int)     set_field_fore (FIELD *,chtype);
+extern NCURSES_EXPORT(int)     set_field_back (FIELD *,chtype);
+extern NCURSES_EXPORT(int)     set_field_pad (FIELD *,int);
+extern NCURSES_EXPORT(int)     field_pad (const FIELD *);
+extern NCURSES_EXPORT(int)     set_field_buffer (FIELD *,int,const char *);
+extern NCURSES_EXPORT(int)     set_field_status (FIELD *,bool);
+extern NCURSES_EXPORT(int)     set_field_userptr (FIELD *, void *);
+extern NCURSES_EXPORT(int)     set_field_opts (FIELD *,Field_Options);
+extern NCURSES_EXPORT(int)     field_opts_on (FIELD *,Field_Options);
+extern NCURSES_EXPORT(int)     field_opts_off (FIELD *,Field_Options);
+
+extern NCURSES_EXPORT(chtype)  field_fore (const FIELD *);
+extern NCURSES_EXPORT(chtype)  field_back (const FIELD *);
+
+extern NCURSES_EXPORT(bool)    new_page (const FIELD *);
+extern NCURSES_EXPORT(bool)    field_status (const FIELD *);
+
+extern NCURSES_EXPORT(void *)  field_arg (const FIELD *);
+
+extern NCURSES_EXPORT(void *)  field_userptr (const FIELD *);
+
+extern NCURSES_EXPORT(FIELDTYPE *)     field_type (const FIELD *);
+
+extern NCURSES_EXPORT(char *)  field_buffer (const FIELD *,int);
+
+extern NCURSES_EXPORT(Field_Options)   field_opts (const FIELD *);
 
        /******************
        *  FORM routines  *
        ******************/
-extern FORM     *new_form(FIELD **);
-
-extern FIELD    **form_fields(const FORM *),
-                *current_field(const FORM *);
-
-extern WINDOW   *form_win(const FORM *),
-                *form_sub(const FORM *);
-
-extern Form_Hook
-                form_init(const FORM *),
-                form_term(const FORM *),
-                field_init(const FORM *),
-                field_term(const FORM *);
-
-extern int      free_form(FORM *),
-                set_form_fields(FORM *,FIELD **),
-                field_count(const FORM *),
-                set_form_win(FORM *,WINDOW *),
-                set_form_sub(FORM *,WINDOW *),
-                set_current_field(FORM *,FIELD *),
-                field_index(const FIELD *),
-                set_form_page(FORM *,int),
-                form_page(const FORM *),
-                scale_form(const FORM *,int *,int *),
-                set_form_init(FORM *,Form_Hook),
-                set_form_term(FORM *,Form_Hook),
-                set_field_init(FORM *,Form_Hook),
-                set_field_term(FORM *,Form_Hook),
-                post_form(FORM *),
-                unpost_form(FORM *),
-                pos_form_cursor(FORM *),
-                form_driver(FORM *,int),
-                set_form_userptr(FORM *,void *),
-                set_form_opts(FORM *,Form_Options),
-                form_opts_on(FORM *,Form_Options),
-                form_opts_off(FORM *,Form_Options),
-                form_request_by_name(const char *);
-
-extern const char
-                *form_request_name(int);
-
-extern void     *form_userptr(const FORM *);
-
-extern Form_Options
-                form_opts(const FORM *);
-
-extern bool     data_ahead(const FORM *),
-                data_behind(const FORM *);
+
+extern NCURSES_EXPORT(FORM *)  new_form (FIELD **);
+
+extern NCURSES_EXPORT(FIELD **)        form_fields (const FORM *);
+extern NCURSES_EXPORT(FIELD *) current_field (const FORM *);
+
+extern NCURSES_EXPORT(WINDOW *)        form_win (const FORM *);
+extern NCURSES_EXPORT(WINDOW *)        form_sub (const FORM *);
+
+extern NCURSES_EXPORT(Form_Hook)       form_init (const FORM *);
+extern NCURSES_EXPORT(Form_Hook)       form_term (const FORM *);
+extern NCURSES_EXPORT(Form_Hook)       field_init (const FORM *);
+extern NCURSES_EXPORT(Form_Hook)       field_term (const FORM *);
+
+extern NCURSES_EXPORT(int)     free_form (FORM *);
+extern NCURSES_EXPORT(int)     set_form_fields (FORM *,FIELD **);
+extern NCURSES_EXPORT(int)     field_count (const FORM *);
+extern NCURSES_EXPORT(int)     set_form_win (FORM *,WINDOW *);
+extern NCURSES_EXPORT(int)     set_form_sub (FORM *,WINDOW *);
+extern NCURSES_EXPORT(int)     set_current_field (FORM *,FIELD *);
+extern NCURSES_EXPORT(int)     field_index (const FIELD *);
+extern NCURSES_EXPORT(int)     set_form_page (FORM *,int);
+extern NCURSES_EXPORT(int)     form_page (const FORM *);
+extern NCURSES_EXPORT(int)     scale_form (const FORM *,int *,int *);
+extern NCURSES_EXPORT(int)     set_form_init (FORM *,Form_Hook);
+extern NCURSES_EXPORT(int)     set_form_term (FORM *,Form_Hook);
+extern NCURSES_EXPORT(int)     set_field_init (FORM *,Form_Hook);
+extern NCURSES_EXPORT(int)     set_field_term (FORM *,Form_Hook);
+extern NCURSES_EXPORT(int)     post_form (FORM *);
+extern NCURSES_EXPORT(int)     unpost_form (FORM *);
+extern NCURSES_EXPORT(int)     pos_form_cursor (FORM *);
+extern NCURSES_EXPORT(int)     form_driver (FORM *,int);
+extern NCURSES_EXPORT(int)     set_form_userptr (FORM *,void *);
+extern NCURSES_EXPORT(int)     set_form_opts (FORM *,Form_Options);
+extern NCURSES_EXPORT(int)     form_opts_on (FORM *,Form_Options);
+extern NCURSES_EXPORT(int)     form_opts_off (FORM *,Form_Options);
+extern NCURSES_EXPORT(int)     form_request_by_name (const char *);
+
+extern NCURSES_EXPORT(const char *)    form_request_name (int);
+
+extern NCURSES_EXPORT(void *)  form_userptr (const FORM *);
+
+extern NCURSES_EXPORT(Form_Options)    form_opts (const FORM *);
+
+extern NCURSES_EXPORT(bool)    data_ahead (const FORM *);
+extern NCURSES_EXPORT(bool)    data_behind (const FORM *);
+
+#if NCURSES_SP_FUNCS
+extern NCURSES_EXPORT(FORM *)  NCURSES_SP_NAME(new_form) (SCREEN*, FIELD **);
+#endif
 
 #ifdef __cplusplus
   }