form_win()

NAME

form_win(), set_form_win(), form_sub(), set_form_sub(), scale_form() - make and break form window and subwindow associations

SYNOPSIS

#include <form.h>


int set_form_win(FORM *form, WINDOW *win);
WINDOW *form_win(FORM *form);
int set_form_sub(FORM *form, WINDOW *sub);
WINDOW *form_sub(FORM *form);
int scale_form(FORM *form, int *rows, int *columns);

DESCRIPTION

Every form has an associated pair of curses windows. The form window displays any title and border associated with the window; the form subwindow displays the items of the form that are currently available for selection.

The first four functions get and set those windows. It is not necessary to set either window; by default, the driver code uses stdscr for both.

In the set_ functions, window argument of NULL is treated as though it were stsdcr A form argument of NULL is treated as a request to change the system default form window or subwindow.

The function scale_window(3) returns the minimum size required for the subwindow of form.

RETURN VALUE

Routines that return pointers return NULL on error. Routines that return an integer return one of the following error codes:

E_OK

The routine succeeded.

E_SYSTEM_ERROR

System error occurred (see errno

E_BAD_ARGUMENT

Routine detected an incorrect or out-of-range argument.

E_POSTED

The form has already been posted.

E_NOT_CONNECTED

No items are connected to the form.

SEE ALSO

curses(3)

forms(3)

NOTES

The header file <form.h> automatically includes the header file <curses.h>.

PORTABILITY

These routines emulate the System V forms library. They were not supported on Version 7 or BSD versions.

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