Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Delphi Programming question

Posted on 1997-09-08
5
Medium Priority
?
191 Views
Last Modified: 2010-04-04
Is it possible to make a DBEdit field to automatically exit to the next field (like pressing tab) as soon as it is totally filled? DBASE used to do that automatically.

Answer gotten and rated:

Proposed Answer from ptiemann...
yes, it is possible :-)
You have to write some eventhandler for the OnChange event. The following code exits to the next field when you have reached 12 characters.

You may derive your own component from TDBEdit that does this automatically so you don't have to code it for each control separately.

<code snipped>

Ok, (itamar) mentioned another solution to which I ofcourse also am interested. Other opinions are also welcome.. Fire away :)
0
Comment
Question by:avj
[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
5 Comments
 
LVL 4

Accepted Solution

by:
itamar earned 80 total points
ID: 1344407
It's similar to ptiemann's good answer, but it doesn't use Win API's. That is:

procedure TForm1.DBEdit1Change(Sender: TObject);
begin
      With Sender as TDBEdit do begin
            if Length(Text) = Field.DataSize Then
                  ActiveControl := TWinControl(Components[ComponentIndex + 1]);
      end;
end;

TIP: This kind of code is easier to share in all DBEdit's in your form.
0
 

Author Comment

by:avj
ID: 1344408
Wonderful, thanks. Only there is one complication I need to overcome, the field that I want to autoexit has an edit mask, which causes it to be filled with blanks up to the field max length immediately. So either I need to prevent the mask being filled with constants or to postpone the exit of the field until something is really typed in the last pos..
0
 
LVL 4

Expert Comment

by:itamar
ID: 1344409
Well, I think we have another question here, or at least an increased value ;)
Anyway, did you try to uncheck the 'Save literals characters' option ?

0
 

Author Comment

by:avj
ID: 1344410
Save literals is unfortunately also needed in this case..

0
 
LVL 4

Expert Comment

by:itamar
ID: 1344411
Couldn't it be something like that ?

>>>
procedure TForm1.DBEdit1Change(Sender: TObject);
begin
With Sender as TDBEdit do begin
if (Length(Text) = Field.DataSize) and <ADDITIONAL TEST> Then
   ActiveControl := TWinControl(Components[ComponentIndex + 1]);
end;
end;

Where in <ADDITIONAL TEST> you could check if the last position of the text is NOT the constant of mask.
0

Featured Post

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!

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…
Creating an auto free TStringList The TStringList is a basic and frequently used object in Delphi. On many occasions, you may want to create a temporary list, process some items in the list and be done with the list. In such cases, you have to…
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …
Do you want to know how to make a graph with Microsoft Access? First, create a query with the data for the chart. Then make a blank form and add a chart control. This video also shows how to change what data is displayed on the graph as well as form…
Suggested Courses

670 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