- create and destroy forms fields
cc [ flag... ] file... -lform -lcurses [ library... ] #include <form.h> FIELD *new_field(int r, int c, int frow, int fcol, int nrow, int ncol);
FIELD *dup_field(FIELD *field, int frow, int fcol);
FIELD *link_field(FIELD *field, int frow, int fcol);
int free_field(FIELD *field);
new_field() creates a new field with r rows and c columns, starting at frow, fcol, in the subwindow of a form. nrow is the number of off-screen rows and nbuf is the number of additional working buffers. This routine returns a pointer to the new field.
dup_field() duplicates field at the specified location. All field attributes are duplicated, including the current contents of the field buffers.
link_field() also duplicates field at the specified location. However, unlike dup_field(), the new field shares the field buffers with the original field. After creation, the attributes of the new field can be changed without affecting the original field.
free_field() frees the storage allocated for field.
Routines that return pointers return NULL on error. free_field() returns one of the following:
Thefunction returned successfully.
The field is already connected to a form.
An argument is incorrect.
See attributes(5) for descriptions of the following attributes:
The header <form.h> automatically includes the headers <eti.h> and <curses.h>.