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- CHRON
-
- INTRODUCTION
- ------------
-
- Chron is an application that will dispatch programs and
- messages at a given time and date. These tasks can be
- scheduled to run one time only, or on a daily, weekly,
- weekday, monthly or annual basis.
-
-
- INSTALLATION
- ------------
-
- o Copy the *.MSG files to a subdirectory in your DPATH.
- These are message repository files that are structured
- like the system files OSO001.MSG and OSO001H.MSG.
-
- o Copy the *.EXE file to a subdirectory in your PATH.
-
- o Copy the *.DLL file to a subdirectory in your LIBPATH.
-
- o Copy the *.HLP file to a subdirectory in your HELP
- environment variable.
-
-
- OPERATION
- ---------
-
- The first time the program is started, you will be prompted for
- the fully qualified filespec that will be used to store the
- tasks when the program is exitted and restarted. There is no
- restriction on the filename as long as it is a valid FAT file
- name.
-
- It is assumed that this file does not exist. If there is a
- file that exists with that name, you will be asked to confirm
- the file name. The author's choice of a file name is
- CHRON.DAT. If you do not specify a fully qualified name, the
- program will automatically fully qualify it based on the
- current drive and directory.
-
- Once the program is started, you add tasks to be scheduled by
- selecting the "Schedule" menu item.
-
- Other actions such as changing the name of the task database or
- editing the existing tasks can be found under the "Action" menu
- item.
-
- Since the application is a PM program, little explanation is
- needed in its operation.
-
-
- INTERNALS
- ---------
-
- The code allows for the entry of tasks (messages or programs)
- and looks to see if the current time is later than the time set
- for the task. If so, that task is started. While the timer
- pops every second, the task list is scanned for tasks only when
- the minute or the number of tasks change.
-
- After a task is dispatched the time for the next dispatch is
- calculated. If it's a "one time" task the task is dropped from
- the list. If it's a daily task, it is scheduled for the same
- time the next day. If it's weekly, it's scheduled for same
- time next week, etc.
-
-
- OTHER NOTES
- -----------
-
- Some random notes about the operation of the code follows:
-
- o The program names entered when scheduling a program to
- start should be fully qualified names. The entry on
- this dialog was purposely patterned after the Program
- Properties dialog on the start groups.
-
- o The code computes what the "same" time next month is in
- a strange way. A problem arose when a person wanted to
- schedule a task for the LAST day of the month and
- selected, say, September 30 for the start day. When the
- task executed and was scheduled for October, I didn't
- feel it was appropriate to schedule for Oct 30, since
- Oct 31st is the LAST day of the month. Eventually the
- LAST day of the month would creep back to the 28th when
- it was scheduled to run in February.
-
- Therefore, the algorithm works as follows. If a
- scheduled day is selected that is within the last five
- days of the month, I assume you are scheduling relative
- to the last day of the month. Therefore, if you
- scheduled a task to run on September 27th, the next
- month's time would be computed as October 28th.
-
- o To schedule a .CMD file, you must start a copy of
- CMD.EXE. For program name, enter C:\OS2\CMD.EXE. In
- the parameters field, enter:
-
- /C command
-
- where "command" is the batch file you want to execute.
-
-
- MISCELLANEOUS
- -------------
-
- This program will operate only under OS/2 1.2 and above.
-
- This is a multi-threaded PM program written entirely in
- Microsoft C 6.0.
-
-
- LIABILITY
- ---------
-
- The author assumes no liability for any damage or loss of data
- caused by this program.
-
-
- REGISTRATION
- ------------
-
- This is a Shareware program. If you like this program, and use
- it on a frequent basis, a registration fee is encouraged.
-
- The shareware charge is:
-
- $15 for individuals.
- $25 per copy for companies with 25 or less employees.
- $40 per copy for companies with 26 or more employees.
-
- Site license agreements are available on a case by case basis.
-
- Please send any correspondence to:
-
- Gary Murphy
- 1022 N. Cooper
- Olathe, KS 66061
-
- Prodigy: [VWSD07A]
- CIS: [73457,365]
-
- You are more likely to reach me on Prodigy than CIS, as I
- frequent that board more.
-
- Any comments, positive or negative, are welcomed. Enjoy.
-
-
- CHANGE HISTORY
- --------------
-
- 1.0 Base Code
-
- 1.1 Added monthly support.
-
- Added "date to start on or after" to all of the dialogs.
-
- 1.1A Fixed bug for not dispatching properly based on time.
-
- 1.2 Chron "remembers" where it was positioned.
-
- 1.3 Changed the message window to a dialog box with a combo
- box, title bar, and min button.
-
- Added a yearly option
-
- Sorted the lists in dispatch (time) order.
-
- 1.4 Cut/Paste/Copy into and out of the message box.
-
- 2.0 Added help.
-
- Added an alarm option for the messages.
-
- Support for workday-only dispatching where you get to
- pick what the work week is (default Mon thru Fri)
-
- Add an alarm option for the messages.
-
- 2.1 Added selection of time and date from a calendar
-
- Fixed bug with workday dispatch not starting on a valid
- workday.
-
- Automatically searches the path for the filename to start.
-
- 2.2 Changed the 3D effect on the calendar to move the characters
- on the calendar day button when it is pressed.
-
- Moved some of the buttons around on the dialogs.
-
- 2.3 Added more extensive help.
-
- Fixed the "stuck button" bug. (If a button was pressed and
- the mouse was moved off the window, the button would remain
- in a "down" state).
-
-
- PLANNED FUTURE ENHANCEMENTS
- ---------------------------
-
-
- o Support for Nth working day of the month that would
- include holidays.
-
- o Suppression of "late" task dispatch. If you schedule a
- daily task and the program has been shutdown for 6 days,
- it will start the program 6 times when restarted. I
- want to make this an option.
-
- o Make an option for the adjust relative to end of month
- algorithm.
-
- o Automatically dispatch CMD.EXE for command files.
-
- o Optionally sort the lists in alpha order.
-
- o Determine a way to allow expressions such as:
-
- Third Wednesday of the month.