Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


Disabling a Tlistview

Disabling a Tlistview

Disabling a Tlistview

I am disabling temporarily the onselectitem of a listview. I use
// disable Objects interaction
Mainform.ListViewObjects.OnSelectItem := nil;

Now how to i re enable it ?


RE: Disabling a Tlistview

the temp disable happens in a scope of a specific procedure, or for a longer time?
Anyway, you must reassign the eventhandler:

CODE -->

Mainform.ListViewObjects.OnSelectItem := <OriginalEventHandlerProcedure>; 

Helping people is my job...

RE: Disabling a Tlistview

Quick example. This is in a media player where the Trackbar must be moved to match the position of the song. The event handler has to be disabled because it would fire upon setting the position, causing a very undesirable situation in the program.


TrackBar1.OnChange := nil;
  Trackbar1.Position := MediaPlayer1.Position;
  TrackBar1.OnChange := TrackBar1Change; //(name of the handler within the form) 

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close