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151 lines
6.1 KiB
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* @Id: form_field_new.3x,v 1.14 2006/11/04 17:12:00 tom Exp @
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<HTML>
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<HEAD>
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<TITLE>form_field_new 3x</TITLE>
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<link rev=made href="mailto:bug-ncurses@gnu.org">
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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</HEAD>
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<BODY>
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<H1>form_field_new 3x</H1>
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<HR>
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<PRE>
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<!-- Manpage converted by man2html 3.0.1 -->
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<STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG> <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
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</PRE>
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<H2>NAME</H2><PRE>
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<STRONG>form_field_new</STRONG> - create and destroy form fields
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</PRE>
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<H2>SYNOPSIS</H2><PRE>
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<STRONG>#include</STRONG> <STRONG><form.h></STRONG>
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FIELD *new_field(int height, int width,
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int toprow, int leftcol,
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int offscreen, int nbuffers);
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FIELD *dup_field(FIELD *field, int toprow, int leftcol);
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FIELD *link_field(FIELD *field, int toprow, int leftcol);
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int free_field(FIELD *field);
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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The function <STRONG>new_field</STRONG> allocates a new field and initial-
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izes it from the parameters given: height, width, row of
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upper-left corner, column of upper-left corner, number
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off-screen rows, and number of additional working buffers.
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The function <STRONG>dup_field</STRONG> duplicates a field at a new loca-
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tion. Most attributes (including current contents, size,
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validation type, buffer count, growth threshold, justifi-
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cation, foreground, background, pad character, options,
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and user pointer) are copied. Field status and the field
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page bit are not copied.
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The function <STRONG>link_field</STRONG> acts like <STRONG>dup_field</STRONG>, but the new
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field shares buffers with its parent. Attribute data is
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separate.
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The function <STRONG>free_field</STRONG> de-allocates storage associated
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with a field.
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</PRE>
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<H2>RETURN VALUE</H2><PRE>
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The function, <STRONG>new_field</STRONG>, <STRONG>dup_field</STRONG>, <STRONG>link_field</STRONG> return <STRONG>NULL</STRONG>
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on error. They set errno according to their success:
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<STRONG>E_OK</STRONG> The routine succeeded.
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<STRONG>E_BAD_ARGUMENT</STRONG>
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Routine detected an incorrect or out-of-range argu-
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ment.
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<STRONG>E_SYSTEM_ERROR</STRONG>
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System error occurred, e.g., malloc failure.
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The function <STRONG>free_field</STRONG> returns one of the following:
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<STRONG>E_OK</STRONG> The routine succeeded.
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<STRONG>E_BAD_ARGUMENT</STRONG>
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Routine detected an incorrect or out-of-range argu-
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ment.
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<STRONG>E_CONNECTED</STRONG>
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field is connected.
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</PRE>
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<H2>SEE ALSO</H2><PRE>
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<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>.
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</PRE>
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<H2>NOTES</H2><PRE>
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The header file <STRONG><form.h></STRONG> automatically includes the header
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file <STRONG><curses.h></STRONG>.
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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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It may be unwise to count on the set of attributes copied
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by <STRONG><A HREF="dup_field.3x.html">dup_field(3x)</A></STRONG> being portable; the System V forms
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library documents are not very explicit about what gets
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copied and what doesn't.
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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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<STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
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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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