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- ---------------------------------------------
- | By: David Harris |
- | ece_0027@bigdog.engr.arizona.edu |
- | Version 1.1 |
- | 6/29/93 |
- ---------------------------------------------
-
-
- KEYCHECK is a utility that scans the keyboard and reports which special
- function keys are pressed. By setting the command line switches, it is
- possible for the user to detect any combination of key presses. It is
- designed to work both as a stand-alone program and as a batch utility.
-
- Inspiration: I was compelled to write this program because I was sick
- of having to wait for Windows to boot just so that I could exit back to
- DOS. This simple little program makes it possible to select whether or
- not Windows (or any other program) will boot from your autoexec with a
- simple key press.
-
- Another way that the program can be used is to select whether or not your
- autoexec.bat file gets executed. There are times when we poor folks with
- only 640k need all the resources we can get. The old method of getting
- maximum memory was rename autoexec.bat to something else and reboot - No
- longer. I think that a few examples might make things more clear, but first:
-
- General syntax:
- keycheck -rlcasnpv
-
- Command line options:
- r - Right shift c - Ctrl
- l - Left shift a - Alt
- s - Scroll lock n - Num lock
- p - Caps lock v - (verbose mode on)
-
- First of all, without any arguments KEYCHECK will display a short help
- screen. The program operates in two modes: verbose and non-verbose.
- The non-verbose mode is best suited for batch applications. A 'v'
- anywhere in the argument will cause the program to display some useful
- information about the status of the special keys.
-
- The program generates a DOS errorlevel 1 if the command line options
- selected match the keyboard status at run time. Keys other than these
- seven are ignored.
-
- --------------------------------------------------------------------------------
- EXAMPLE 1 - Selectively boot windows
- --------------------------------------------------------------------------------
- :
- :
- :
- other autoexec.bat stuff
- :
- :
- :
- keycheck -pn Check to see if Numlock and
- Caps lock are on
- if errorlevel == 1 goto end If they are, skip Windows
- win
-
- :end
-
- If your computer is like mine, it boots up with Num Lock on. So now, in
- order to prevent windows from starting when you turn on the computer,
- simply press the Caps lock and you will drop right to the prompt.
-
- --------------------------------------------------------------------------------
- EXAMPLE 2 - Skip autoexec.bat during start-up
- --------------------------------------------------------------------------------
- keycheck -cnv Check to see if the Ctrl key
- if errorlevel = 1 goto end is pressed.
- :
- :
- :
- rest of autoexec junk
- :
- :
- :
- :end
- echo Autoexec.bat has been averted.
-
- In this case, holding down the Ctrl key during start-up will skip the
- entire autoexec. As a result, no TSR's will be loaded and you'll get
- the maximum memory available. Also, the program will provide you some
- additional info because the 'v' flag was set. Note that I again checked
- for Num lock.
-
- --------------------------------------------------------------------------------
- EXAMPLE 3 - Selectively booting multiple programs
- --------------------------------------------------------------------------------
- ...Somewhere in autoexec.bat...
-
- keycheck -cn
- if errorlevel == 1 procomm Executes procomm upon Ctrl press
-
- keycheck -an
- if errorlevel == 1 wp51 Executes Wordperfect upon Alt
-
- keycheck -rca == 1 \games\fs4 Starts flight simulator if you
- hold down RightShift-Ctrl-Alt
- during startup.
-
- With some minor changes to your autoexec (or any other bat file), you
- will soon be on your way. Good Luck! Please let me know what you think
- of this program. This is the first time I have released a program to
- the public, so I would appreciate any feedback regarding improvements
- and bugs and whatever. I hope that you find it useful.
-
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