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OpenDarwin 7.2.1 - man page for form (opendarwin section 3X)

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form(3X)										 form(3X)

       form - curses extension for programming forms

       #include <form.h>

       The  form  library  provides terminal-independent facilities for composing form screens on
       character-cell terminals.  The library includes: field routines, which create  and  modify
       form  fields;  and  form  routines,  which  group  fields into forms, display forms on the
       screen, and handle interaction with the user.

       The form library uses the curses libraries, and a curses initialization	routine  such  as
       initscr must be called before using any of these functions.  To use the form library, link
       with the options -lform -lcurses.

   Current Default Values for Field Attributes
       The form library maintains a default value for field attributes.  You can get or set  this
       default	by  calling  the appropriate set_ or retrieval routine with a NULL field pointer.
       Changing this default with a set_ function affects future field creations,  but	does  not
       change the rendering of fields already created.

   Routine Name Index
       The following table lists each form routine and the name of the manual page on which it is

       curses Routine Name    Manual Page Name
       current_field	      form_page(3X)
       data_ahead	      form_data(3X)
       data_behind	      form_data(3X)
       dup_field	      form_field_new(3X)
       dynamic_fieldinfo      form_field_info(3X)
       field_arg	      form_field_validation(3X)
       field_back	      form_field_attributes(3X)
       field_buffer	      form_field_buffer(3X)
       field_count	      form_field(3X)
       field_fore	      form_field_attributes(3X)
       field_index	      form_page(3X)
       field_info	      form_field_info(3X)
       field_init	      form_hook(3X)
       field_just	      form_field_just(3X)
       field_opts	      form_field_opts(3X)
       field_opts_off	      form_field_opts(3X)
       field_opts_on	      form_field_opts(3X)
       field_pad	      form_field_attributes(3X)
       field_status	      form_field_buffer(3X)
       field_term	      form_hook(3X)
       field_type	      form_field_validation(3X)
       field_userptr	      form_field_userptr(3X)
       form_driver	      form_driver(3X)
       form_fields	      form_field(3X)
       form_init	      form_hook(3X)
       form_opts	      form_opts(3X)
       form_opts_off	      form_opts(3X)
       form_opts_on	      form_opts(3X)
       form_page	      form_page(3X)
       form_request_by_name   form_requestname(3X)

       form_request_name      form_requestname(3X)
       form_sub 	      form_win(3X)
       form_term	      form_hook(3X)
       form_userptr	      form_userptr(3X)
       form_win 	      form_win(3X)
       free_field	      form_field_new(3X)
       free_form	      form_new(3X)
       link_field	      form_field_new(3X)
       link_fieldtype	      form_fieldtype(3X)
       move_field	      form_field(3X)
       new_field	      form_field_new(3X)
       new_form 	      form_new(3X)
       new_page 	      form_new_page(3X)
       pos_form_cursor	      form_cursor(3X)
       post_form	      form_post(3X)
       scale_form	      form_win(3X)
       set_current_field      form_page(3X)
       set_field_back	      form_field_attributes(3X)
       set_field_buffer       form_field_buffer(3X)
       set_field_fore	      form_field_attributes(3X)
       set_field_init	      form_hook(3X)
       set_field_just	      form_field_just(3X)
       set_field_opts	      form_field_opts(3X)
       set_field_pad	      form_field_attributes(3X)
       set_field_status       form_field_buffer(3X)
       set_field_term	      form_hook(3X)
       set_field_type	      form_field_validation(3X)
       set_field_userptr      form_field_userptr(3X)
       set_fieldtype_arg      form_fieldtype(3X)
       set_fieldtype_choice   form_fieldtype(3X)
       set_form_fields	      form_field(3X)
       set_form_init	      form_hook(3X)
       set_form_opts	      form_field_opts(3X)
       set_form_page	      form_page(3X)
       set_form_sub	      form_win(3X)
       set_form_term	      form_hook(3X)
       set_form_userptr       form_userptr(3X)
       set_form_win	      form_win(3X)
       set_max_field	      form_field_buffer(3X)
       set_new_page	      form_new_page(3X)
       unpost_form	      form_post(3X)

       Routines that return pointers return NULL on  error.   Routines	that  return  an  integer
       return one of the following error codes:

       E_OK The routine succeeded.

	    The field is already connected to a form.

	    System error occurred (see errno).

	    Routine detected an incorrect or out-of-range argument.

	    The form is already posted.

	    Routine was called from an initialization or termination function.

	    Form is too large for its window.

	    The form has not been posted.

	    The form driver code saw an unknown request code.

	    Contents of a field are not valid.

	    No fields are connected to the form.

	    The form driver could not process the request.

       curses(3X)  and	related  pages whose names begin "form_" for detailed descriptions of the
       entry points.

       The header file <form.h> automatically includes the header files <curses.h> and <eti.h>.

       In your library list, libform.a should be before libncurses.a; that is, you  want  to  say
       `-lform	-lncurses', not the other way around (which would give you a link error using GNU
       ld(1) and many other linkers).

       These routines emulate the System V forms library.  They were not supported on  Version	7
       or BSD versions.

       Juergen Pfeifer.  Manual pages and adaptation for ncurses by Eric S. Raymond.

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