Solved

disable tdbgrid insert optins

Posted on 1998-06-23
4
1,552 Views
Last Modified: 2012-05-07
hi , anyonw knows how can i disable to options to add new record using tdbgrid control ?
using this dbgrid component and not with some Ttable properties ...
0
Comment
Question by:asi
  • 2
4 Comments
 
LVL 10

Expert Comment

by:Jacco
ID: 1355298
The only way of doing that is doing an Abort in OnInsert of the TTable, but that is what you don't want.

The other option is setting your DBGrid to ReadOnly or RowSelect...

Otherwise you have to derive a new TDBGrid.

Regards Jacco
0
 
LVL 2

Expert Comment

by:kjteng
ID: 1355299
It is not impossible but it will make you code messy:
Track the key code in keydown event, something like this:
  if key= VK_INSERT then key:=0;
  if key= VK_DOWN and atBottom then key:= 0
  ........
There is no such method/property as "atBottom" in dbgrid, you have to write some code to check whether you are at the end of file position.




0
 
LVL 10

Expert Comment

by:Jacco
ID: 1355300
Thanks for the comment :)
0
 
LVL 1

Accepted Solution

by:
michaue earned 20 total points
ID: 1355301
If I understand you correct you want to disable the user to add records to the TDBGrid but they must be able to edit them.  And you also don't want to disable the insert from the TTable component ...

Then the only thing I can think of is check the OnKeyDown event of the TDBGrid to check if the Insert button on your keyboard is pressed.

if Key = 45 then
  Cancel the insert that the user wants to do ...

45 is the value for the Insert key and KEY is the variable passed to the KeyDown event.

Hope it works

Elfrieda :)  PS :  Why don't you want to work with the TTable
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

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…
Have you ever had your Delphi form/application just hanging while waiting for data to load? This is the article to read if you want to learn some things about adding threads for data loading in the background. First, I'll setup a general applica…
Hi friends,  in this video  I'll show you how new windows 10 user can learn the using of windows 10. Thank you.
Many functions in Excel can make decisions. The most simple of these is the IF function: it returns a value depending on whether a condition you describe is true or false. Once you get the hang of using the IF function, you will find it easier to us…

911 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

Need Help in Real-Time?

Connect with top rated Experts

22 Experts available now in Live!

Get 1:1 Help Now