form_win - make and break form window and subwindow associations
int set_form_win(FORM *form, WINDOW *win);
WINDOW *form_win(const FORM *form);
int set_form_sub(FORM *form, WINDOW *sub);
WINDOW *form_sub(const FORM *form);
int scale_form(const FORM *form, int *rows, int *columns);
Every form has an associated pair of curses windows. The form window
displays any title and border associated with the window; the form sub-
window displays the items of the form that are currently available for
The first four functions get and set those windows. It is not neces-
sary to set either window; by default, the driver code uses stdscr for
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_form returns the minimum size required for the sub-
window of form.
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.
System error occurred (see errno).
Routine detected an incorrect or out-of-range argument.
The form has already been posted.
No items are connected to the form.
The header file <form.h> automatically includes the header file
These routines emulate the System V forms library. They were not sup-
ported on Version 7 or BSD versions.
Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S.