form_field_new - create and destroy form fields
FIELD *new_field(int height, int width,
int toprow, int leftcol,
int offscreen, int nbuffers);
FIELD *dup_field(FIELD *field, int toprow, int leftcol);
FIELD *link_field(FIELD *field, int toprow, int leftcol);
int free_field(FIELD *field);
The function new_field allocates a new field and initializes
it from the parameters given: height, width, row of
upper-left corner, column of upper-left corner, number
off-screen rows, and number of additional working buffers.
The function dup_field duplicates a field at a new location.
Most attributes (including current contents, size,
validation type, buffer count, growth threshold, justification,
foreground, background, pad character, options,
and user pointer) are copied. Field status and the field
page bit are not copied.
The function link_field acts like dup_field, but the new
field shares buffers with its parent. Attribute data is
The function free_field de-allocates storage associated
with a field.
The function, new_field, dup_field, link_field return NULL
The function free_field returns one of the following:
E_OK The routine succeeded.
E_SYSTEM_ERROR [Toc] [Back]
System error occurred (see errno).
E_BAD_ARGUMENT [Toc] [Back]
Routine detected an incorrect or out-of-range argument.
The header file <form.h> automatically includes the header
These routines emulate the System V forms library. They
were not supported on Version 7 or BSD versions.
It may be unwise to count on the set of attributes copied
by dup_field(3) being portable; the System V forms library
documents are not very explicit about what gets copied and
Juergen Pfeifer. Manual pages and adaptation for new
curses by Eric S. Raymond.
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