1997-05-15 12:00:00 +08:00
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<BODY BGCOLOR="#99ccbb" TEXT="#000000" LINK="#4060b0" VLINK="#000080" ALINK="#ff4040">
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<PRE>
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<STRONG>form_userptr</STRONG> - associate application data with a form item
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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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1998-03-01 12:21:12 +08:00
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int set_form_userptr(FORM *form, void *userptr);
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void* form_userptr(const FORM *form);
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1997-05-15 12:00:00 +08:00
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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Every form and every form item has a field that can be
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used to hold application-specific data (that is, the form-
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driver code leaves it alone). These functions get and set
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the form user pointer field.
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</PRE>
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<H2>RETURN VALUE</H2><PRE>
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The function <STRONG>form_userptr</STRONG> returns <STRONG>NULL</STRONG> on error. The
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function <STRONG>set_form_userptr</STRONG> returns one of the following:
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<STRONG>E_OK</STRONG> The routine succeeded.
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<STRONG>E_SYSTEM_ERROR</STRONG>
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System error occurred (see <STRONG>errno</STRONG>).
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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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The user pointer should be a void pointer. We leave it as
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a char pointer for SVr4 compatibility.
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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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