?
Solved

TListView virtual mode & Selected

Posted on 2002-05-23
7
Medium Priority
?
460 Views
Last Modified: 2008-02-01
I have a TListView in virtual mode. I set the Selected property to an item outside the current listbox. If U scroll down the list I can see the new item selected ?_but_ how can I get the list box to automatically move it's view on the TCollection down to include the new selected (via code) item.

Thanks, Tom.
0
Comment
Question by:tomcorcoran
[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
  • 2
7 Comments
 
LVL 14

Expert Comment

by:DragonSlayer
ID: 7031077
try something like this?

ListView1.Items[myIndex].MakeVisible(False);

or

ListView1.TopItem := ListView1.Items[myIndex];
0
 
LVL 20

Expert Comment

by:Madshi
ID: 7031201
I'm not sure whether the "Items" property works completely, when using virtual mode. I'm using the following function when doing virtual mode:

ListView_EnsureVisible

Regards, Madshi.
0
 
LVL 14

Expert Comment

by:DragonSlayer
ID: 7031279
Hmm... yeah, forgot about that.

Didn't try it myself, but you just *might* get a List Index Out of Bounds error.

So Tom, Madshi is correct, just follow his suggestion and call it this way:

ListView_EnsureVisible(ListView1.Handle, myIndex, False);

and don't forget to add CommCtrl in your uses clause.

(PS: If this works, give the points to Madshi)
0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 
LVL 20

Accepted Solution

by:
Madshi earned 200 total points
ID: 7031305
The Items stuff might work, too, sometimes it does work even in virtual mode. Just not sure...
0
 

Author Comment

by:tomcorcoran
ID: 7031676
It turns out that
ListView1.Items[myIndex].MakeVisible(False);
is a wrap for
ListView_EnsureVisible(ListView1.Handle, myIndex, False);
so both work perfectly :-)
There doesn't seem to be any advantage to using the later.

FYI, ListView1.TopItem is readonly.

The selected index however shows at the bottom of the TListView and I want it toward the top. I want to do

ListView1.Items[myIndex+NumberItemsVisibleInList].MakeVisible(False);

Do ye have any idea how I can get
the number of items visible in the list?

Thanks a million, Tom.
0
 
LVL 20

Expert Comment

by:Madshi
ID: 7032077
ListView_GetCountPerPage
0
 

Author Comment

by:tomcorcoran
ID: 7041280
Thanks for you guys help. Great, Tom.
0

Featured Post

VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Question has a verified solution.

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

A lot of questions regard threads in Delphi.   One of the more specific questions is how to show progress of the thread.   Updating a progressbar from inside a thread is a mistake. A solution to this would be to send a synchronized message to the…
Introduction Raise your hands if you were as upset with FireMonkey as I was when I discovered that there was no TListview.  I use TListView in almost all of my applications I've written, and I was not going to compromise by resorting to TStringGrid…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …
Suggested Courses
Course of the Month13 days, 2 hours left to enroll

777 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