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| <H1 class="no-header">form_hook 3x</H1> |
| <PRE> |
| <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG> <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG> |
| |
| |
| |
| |
| </PRE> |
| <H2><a name="h2-NAME">NAME</a></H2><PRE> |
| <STRONG>form_hook</STRONG> - set hooks for automatic invocation by applica- |
| tions |
| |
| |
| </PRE> |
| <H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE> |
| <STRONG>#include</STRONG> <STRONG><form.h></STRONG> |
| int set_field_init(FORM *form, Form_Hook func); |
| Form_Hook field_init(const FORM *form); |
| int set_field_term(FORM *form, Form_Hook func); |
| Form_Hook field_term(const FORM *form); |
| int set_form_init(FORM *form, Form_Hook func); |
| Form_Hook form_init(const FORM *form); |
| int set_form_term(FORM *form, Form_Hook func); |
| Form_Hook form_term(const FORM *form); |
| |
| |
| </PRE> |
| <H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE> |
| These functions make it possible to set hook functions to |
| be called at various points in the automatic processing of |
| input event codes by <STRONG>form_driver</STRONG>. |
| |
| The function <STRONG>set_field_init</STRONG> sets a hook to be called at |
| form-post time and each time the selected field changes |
| (after the change). <STRONG>field_init</STRONG> returns the current field |
| init hook, if any (<STRONG>NULL</STRONG> if there is no such hook). |
| |
| The function <STRONG>set_field_term</STRONG> sets a hook to be called at |
| form-unpost time and each time the selected field changes |
| (before the change). <STRONG>field_term</STRONG> returns the current field |
| term hook, if any (<STRONG>NULL</STRONG> if there is no such hook). |
| |
| The function <STRONG>set_form_init</STRONG> sets a hook to be called at |
| form-post time and just after a page change once it is |
| posted. <STRONG>form_init</STRONG> returns the current form init hook, if |
| any (<STRONG>NULL</STRONG> if there is no such hook). |
| |
| The function <STRONG>set_form_term</STRONG> sets a hook to be called at |
| form-unpost time and just before a page change once it is |
| posted. <STRONG>form_init</STRONG> returns the current form term hook, if |
| any (<STRONG>NULL</STRONG> if there is no such hook). |
| |
| |
| </PRE> |
| <H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE> |
| Routines that return pointers return <STRONG>NULL</STRONG> on error. Other |
| routines return one of the following: |
| |
| <STRONG>E_OK</STRONG> The routine succeeded. |
| |
| <STRONG>E_SYSTEM_ERROR</STRONG> |
| System error occurred (see <STRONG>errno</STRONG>). |
| |
| |
| </PRE> |
| <H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE> |
| <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>. |
| |
| |
| </PRE> |
| <H2><a name="h2-NOTES">NOTES</a></H2><PRE> |
| The header file <STRONG><form.h></STRONG> automatically includes the header |
| file <STRONG><curses.h></STRONG>. |
| |
| |
| </PRE> |
| <H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE> |
| These routines emulate the System V forms library. They |
| were not supported on Version 7 or BSD versions. |
| |
| |
| </PRE> |
| <H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE> |
| Juergen Pfeifer. Manual pages and adaptation for new |
| curses by Eric S. Raymond. |
| |
| |
| |
| <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG> |
| </PRE> |
| <div class="nav"> |
| <ul> |
| <li><a href="#h2-NAME">NAME</a></li> |
| <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li> |
| <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li> |
| <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li> |
| <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li> |
| <li><a href="#h2-NOTES">NOTES</a></li> |
| <li><a href="#h2-PORTABILITY">PORTABILITY</a></li> |
| <li><a href="#h2-AUTHORS">AUTHORS</a></li> |
| </ul> |
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