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138 lines
3.3 KiB
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138 lines
3.3 KiB
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<BODY>
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<PRE>
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<!-- Manpage converted by man2html 3.0.1 -->
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</PRE>
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<H2>NAME</H2><PRE>
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<B>form_field_buffer</B> - field buffer control
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</PRE>
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<H2>SYNOPSIS</H2><PRE>
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<B>#include</B> <B><form.h></B>
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int set_field_buffer(FIELD *field, int buf, const char
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*value);
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char *field_buffer(const FIELD *field, int buffer);
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int set_field_status(FIELD *field, bool status);
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bool field_status(const FIELD *field);
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int set_max_field(FIELD *field, int max);
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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The function <B>set_field_buffer</B> sets the numbered buffer of
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the given field to contain a given string. Buffer 0 is
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the displayed value of the field; other numbered buffers
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may be allocated by applications through the <B>nbuf</B> argument
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of (see <B><A HREF="form_field_new.3x.html">form_field_new(3x)</A></B>) but are not manipulated by the
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forms library. The function <B>field_buffer</B> returns the
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address of the buffer. Please note that this buffer has
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always the length of the buffer, that means that it may
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typically contain trailing spaces. If you entered leading
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spaces the buffer may also contain them. If you want the
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raw data, you must write your own routine that copies the
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value out of the buffer and removes the leading and trail-
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ing spaces. Please note also, that subsequent operations
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on the form will probably change the content of the
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buffer. So don't use it for long term storage of the
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entered form data.
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The function <B>set_field_status</B> sets the associated status
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flag of <I>field</I>; <B>field_status</B> gets the current value. The
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status flag is set to a nonzero value whenever the field
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changes.
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The function <B>set_max_field</B> sets the maximum size for a
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dynamic field. An argument of 0 turns off any maximum
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size threshold for that field.
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</PRE>
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<H2>RETURN VALUE</H2><PRE>
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The <B>field_buffer</B> function returns NULL on error.
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The <B>field_status</B> function returns <B>TRUE</B> or <B>FALSE</B>.
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The remaining routines return one of the following:
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<B>E_OK</B> The routine succeeded.
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<B>E_SYSTEM_ERROR</B>
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System error occurred (see <B>errno</B>).
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<B>E_BAD_ARGUMENT</B>
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Routine detected an incorrect or out-of-range argu-
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ment.
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</PRE>
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<H2>SEE ALSO</H2><PRE>
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<B><A HREF="ncurses.3x.html">curses(3x)</A></B> and 3x pages whose names begin "form_" for
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detailed descriptions of the entry points.
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</PRE>
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<H2>NOTES</H2><PRE>
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The header file <B><form.h></B> automatically includes the header
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file <B><curses.h></B>.
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</PRE>
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<H2>PORTABILITY</H2><PRE>
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These routines emulate the System V forms library. They
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were not supported on Version 7 or BSD versions.
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</PRE>
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<H2>AUTHORS</H2><PRE>
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Juergen Pfeifer. Manual pages and adaptation for new
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curses by Eric S. Raymond.
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</PRE>
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<HR>
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<ADDRESS>
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Man(1) output converted with
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<a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a>
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</ADDRESS>
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</BODY>
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</HTML>
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