| '\" t |
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| .\" $Id: mitem_current.3x,v 1.13 2010/12/04 18:40:45 tom Exp $ |
| .TH mitem_current 3X "" |
| .SH NAME |
| \fBmitem_current\fR \- set and get current_menu_item |
| .SH SYNOPSIS |
| \fB#include <menu.h>\fR |
| .br |
| int set_current_item(MENU *menu, const ITEM *item); |
| .br |
| ITEM *current_item(const MENU *menu); |
| .br |
| int set_top_row(MENU *menu, int row); |
| .br |
| int top_row(const MENU *menu); |
| .br |
| int item_index(const ITEM *item); |
| .br |
| .SH DESCRIPTION |
| The function \fBset_current_item\fR sets the current item (the item on which |
| the menu cursor is positioned). \fBcurrent_item\fR returns a pointer to the |
| current item in the given menu. |
| .PP |
| The function \fBset_top_row\fR sets the top row of the menu to show the given |
| row (the top row is initially 0, and is reset to this value whenever the |
| \fBO_ROWMAJOR\fR option is toggled). The item leftmost on the given row |
| becomes current. The function \fBtop_row\fR returns the number of the top menu |
| row being displayed. |
| .PP |
| The function \fBitem_index\fR returns the (zero-origin) index of \fIitem\fR in |
| the menu's item pointer list. |
| .SH RETURN VALUE |
| \fBcurrent_item\fR returns a pointer (which may be \fBNULL\fR). |
| It does not set errno. |
| .PP |
| \fBtop_row\fR and \fBitem_index\fR return \fBERR\fR (the general \fBcurses\fR |
| error value) if their \fImenu\fP parameter is \fBNULL\fP. |
| .PP |
| \fBset_current_item\fR and \fBset_top_row\fR return one of the following: |
| .TP 5 |
| .B E_OK |
| The routine succeeded. |
| .TP 5 |
| .B E_BAD_ARGUMENT |
| Routine detected an incorrect or out-of-range argument. |
| .TP 5 |
| .B E_BAD_STATE |
| Routine was called from an initialization or termination function. |
| .TP 5 |
| .B E_NOT_CONNECTED |
| No items are connected to the menu. |
| .TP 5 |
| .B E_SYSTEM_ERROR |
| System error occurred (see \fBerrno\fR). |
| .SH SEE ALSO |
| \fBcurses\fR(3X), \fBmenu\fR(3X). |
| .SH NOTES |
| The header file \fB<menu.h>\fR automatically includes the header file |
| \fB<curses.h>\fR. |
| .SH PORTABILITY |
| These routines emulate the System V menu library. They were not supported on |
| Version 7 or BSD versions. |
| .PP |
| The SVr4 menu library documentation specifies the \fBtop_row\fR and |
| \fBindex_item\fR error value as \-1 (which is the value of \fBERR\fR). |
| .SH AUTHORS |
| Juergen Pfeifer. Manual pages and adaptation for new curses by Eric |
| S. Raymond. |