Solved

BCB: Best way to make a Schedule/Agenda (Trigger events)?

Posted on 2004-03-23
4
374 Views
Last Modified: 2010-04-01
Hi Experts,

I'm not the best programmer in the world, but I'm learning.


At the moment I am designing an Personal Assistant API. (Borland Builder 6)

Now I want to implement a Schedule/Agenda in it.


Of course there are several ways to trigger an event like a Birthday or a Appointment etc.

Now I want to know what will be the best way to do this?

-Read everything from 1 large ('Database') file every minute?
-Make a 'trigger-file' (or array)(that is checked every min.) and only read from the 'Database' when triggered?
-..?

And how should you handle recurring events? (adding en deleting)

Does anybody have/know an example/a tutorial or maybe some useful code(with explanation)/links?


Thx in advance, very appreciated!

Best regards, Roland(BE).
0
Comment
Question by:Roland1980
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
4 Comments
 
LVL 16

Expert Comment

by:George Tokas
ID: 10667946
Hello there,
This is what I propose:
Use a TDateTimePicker from the Win32 tab. That is for choose the date.
Implement an Hour setter ( i.e. 2 Edit boxes associated with up/down controls). Those are to set the time.
use a button to add the date and time do trigger the event and store the data in a TList or something.
Add a TTimer to tick every minute and check if the date and time is reached to fire your event.
Check for that like this:
 TDateTime   EventDateTime,NowDateTime;
 //Load the EventDateTime from your list
 NowDateTime = Now();
 if(EventDateTime >= NowDateTime)
  {
       //Fire Event here and don't forget to erase the event from the list when finnished.
  }

Your "database" will be your list.
BCB have lots of components and methods you can use.

Hope it is helpfull
regards,
gtokas.
0
 

Author Comment

by:Roland1980
ID: 10672176
Hi gtokas,

That did help me on my way.

But what about when the 'database' gets big?
Then every minute the whole 'database' has to be read.

So, in your example, I can create a file, load it in a TList or something and check it every minute.

And how should I handle recurring events? (adding en deleting)

Roland(BE).
0
 

Accepted Solution

by:
modulo earned 0 total points
ID: 10967782
PAQed, with points refunded (205)

modulo
Community Support Moderator
0

Featured Post

[Live Webinar] The Cloud Skills Gap

As Cloud technologies come of age, business leaders grapple with the impact it has on their team's skills and the gap associated with the use of a cloud platform.

Join experts from 451 Research and Concerto Cloud Services on July 27th where we will examine fact and fiction.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

  Included as part of the C++ Standard Template Library (STL) is a collection of generic containers. Each of these containers serves a different purpose and has different pros and cons. It is often difficult to decide which container to use and …
C++ Properties One feature missing from standard C++ that you will find in many other Object Oriented Programming languages is something called a Property (http://www.experts-exchange.com/Programming/Languages/CPP/A_3912-Object-Properties-in-C.ht…
The goal of the tutorial is to teach the user how to use functions in C++. The video will cover how to define functions, how to call functions and how to create functions prototypes. Microsoft Visual C++ 2010 Express will be used as a text editor an…
The goal of the video will be to teach the user the difference and consequence of passing data by value vs passing data by reference in C++. An example of passing data by value as well as an example of passing data by reference will be be given. Bot…

635 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question