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Window Library Documentation
(FIDO-10)
George Sanderson 22 Jan. 1985
St.Louis, MO
(314) 234-3310
WINDOW.C -
Window.c ia a simple window management library based in part on the
article "A Simple Window Package" by Edward Mitchell in the January
1984 issue of Dr. Dobb's Journal. Ray L. McVay of Arlington, TX
on 30 August, 1984, entered and made some modifications to the original
code. The window module was largly rewritten and again made available.
The code may be freely copied at ones own risk and the code can not
be claimed or in any other manner restricted from public access.
This implementation uses dynamically allocated buffers for window
control blocks and screen save buffers instead of the fixed arrays
used by Mitchell. This library is written to be used with the
Lattice C compiler. This module was largly rewritten and includes
a number of new functions.
VLIB.A -
An assembly language support library called VLIB is used to
interface the Lattice C compiler with the IBM ROM BIOS video
routines. VLIB will undoubtedly have to be rewritten if the window
package is to be used with other compilers. The following
paragraphs should be of help to those folks who must tread this
path.
The calling convention for Lattice is to push parameters rightmost
first then do an intrasegment call to the function. In other words,
functions are NEAR procedures. Some compilers do intersegment (FAR)
calls to assembly language functions so their parameters will be two
bytes farther away on the stack.
Functions return char's and int's in the AX register.
WNDEMO.C -
Just what it says. WNDEMO shows how to open windows, write strings
in them and close 'em and use some of the other functions.
FINALLY -
Since all the windowing functions go through the standard BIOS
calls, any display mode can be accommodated. The graphic modes will
require more attention from the host program than was paid in
WNDEMO, but that (as is so often said) is left as an excercise for
the reader (programmer).