?
Solved

Help with detecting a move within a Table ?

Posted on 2002-05-30
6
Medium Priority
?
148 Views
Last Modified: 2010-04-04
Hi,

I am using an ADOTable which is located in a DataModule (as other Forms etc may access this Table), and have a Form which accesses this DataModule and ADOTable.

The Form is used for DataEntry, and can be scrolled back and forth etc.

What I need to do, is on arrival of each record, certain fields may be enabled or disabled based on the value of certain fields.

I thought great, I can use the AFTERSCROLL EVENT attached to the ADOTable, BUT, I cannot see my form and the procedure I use to enable/disable the fields from the datamodule (possibly due to the fact that the form is not created until it is needed).

Could anyone advise on the easiest way around this, is there another way to do what I am after ??????


Thanks
pje
0
Comment
Question by:pjelias
[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
  • 3
  • 2
6 Comments
 

Author Comment

by:pjelias
ID: 7043972
I may have fixed the problem (moved the Table to the Form, although did not really want to do it).

Would still like to hear from people with any suggestions, will give the points to someone if I use the suggestion.


Thanks
pje
0
 
LVL 9

Expert Comment

by:ITugay
ID: 7044027
hi,

if you use TDataSource then take a look at OnDataChange event. May be it something you looking for?

-------
Igor.
0
 
LVL 11

Expert Comment

by:robert_marquardt
ID: 7044107
You have a simple component problem. You want to assign an Event at designtime to a Form which only exists at runtime.
The solution is so simple. Assign the event at runtime after you created the Form.
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:pjelias
ID: 7045766
Robert,

I have never done this, can you explain further ?

0
 
LVL 11

Accepted Solution

by:
robert_marquardt earned 300 total points
ID: 7046158
An event is a normal property.

something like this:

TForm1 = class(TForm)
...
public
  procedure MyEventHandler(Sender: TObject);
end;

The above method is suitable for TNotifyEvents.

Somewhere in your code:

  Form1 := TForm1.Create(Self);
  // now you can assign the event handler
  SomeOtherObject.OnANotifyEventProperty := MyEventHandler;
  Form1.ShowModal;
  Form1.Release;

The main thing is that an event property is nothing else than a normal variable of method type.
0
 

Author Comment

by:pjelias
ID: 7245893
Question open for a while.

Thanks for help.
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

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

The uses clause is one of those things that just tends to grow and grow. Most of the time this is in the main form, as it's from this form that all others are called. If you have a big application (including many forms), the uses clause in the in…
Hello everybody This Article will show you how to validate number with TEdit control, What's the TEdit control? TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text. Usua…
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…
How to fix incompatible JVM issue while installing Eclipse While installing Eclipse in windows, got one error like above and unable to proceed with the installation. This video describes how to successfully install Eclipse. How to solve incompa…
Suggested Courses
Course of the Month10 days, 14 hours left to enroll

770 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