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README.1ST
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1992-08-20
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Gallagher Computing Corp.
Kevin S. Gallagher
CIS 70034,2313
clock by: Ben Echols
Clock function for Clipper 5.1 (or higher)
------------------------------------------
This function is not PUBLIC DOMAIN, but may be used as long as it is
for your own personal use, anything other than personal use, then
you should send me five dollars (ten dollars for source code .asm)..
PS. If you can not afford the $5.00's no sweat, just send comments!
I really like to hear feedback (good or bad) about the clock if you
have the time to either leave a message on Compuserve or send a post
card with comments.
This clock was written in assembly language, and adheres to Clipper's
extend system. Ticker.obj has two function calls, one (1) to install
the "event driven" clock, and (1) one to uninstall the clock. Both of
them will return "nErrorlevels" (see .prg files). The clock can be
installed many times in a application, but MUST be uninstalled prior
to exiting the application, or the computer system will crash.......
There are two (2) parameters that the install function takes, which
are <nRow>,<nCol> while the uninstall function takes none.
nVar := BK_TICKINS( <nRow>, <nCol> ) --> nErrorlevel
nVar := BK_TICKREM() --> nErrorlevel
If the positioning coordinates are invalid the clock will not be
installed. If the clock is already installed, and you attempt to
place the clock on the screen again it will know that it's already
installed, hence will not reinstall itself. The colors used are the
colors at <nRow> , <nCol> which is nice if you are using a screen
saver, such as one of the ones from GRUMP.LIB "Grumpfish library",
that will change colors randomly. If you were using one of clock
functions from another third party library (not naming any because
they do get the job done, and its not nice to compare um this way!)
they would not inherit the new colors while the screen saver was in
use.
I have tested the clock with EBASE50.LIB, FLEXFILE.LIB, GRUMP.LIB,
NANFOR.LIB and also OVERCL.LIB and have had no problems with any of
these libraries (FUNCKY and NT250 libraries have clocks already)!!!
=====================================================================
Gallagher Computing will be placing several other functions written
in assembly, for Clipper 5.x within the coming months. We are working
on several different functions at the present time, but want to keep
them a under-wraps for now...
=====================================================================