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How to leave a TListView item 'selected' after leaving one screen then returning

Posted on 2011-03-18
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Last Modified: 2012-05-11
Hi, in my TListView box I have several items.. I have it set up so when I double-click on an item, it takes me to another tab screen of my program and displays further detail about my selection. No problem there, but when I return back to my original screen that has the TListView, the item I double-clicked before no longer shows as 'selected'/hi-lited. Is these some where to leave that item hi-lited?

Thanks
  Shawn
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Question by:shawn226
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21 Comments
 
LVL 24

Expert Comment

by:jimyX
Comment Utility
Set HideSelection property to False
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Expert Comment

by:ewangoya
Comment Utility


Just call ListView.SetFocus when you come back to the tab with the list view
procedure TForm1.PageControl1Change(Sender: TObject);
begin
  if PageControl1.ActivePage = ListViewPage then
    ListView1.SetFocus;
end;

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Author Comment

by:shawn226
Comment Utility
Thanks guys. Jimyx - your suggestion does work, but it only highlights the ListView item in a very light shade of gray. I was hoping it would highlight it in the blue color as when I first selected it.

Ewangoya - your suggestion didn't seem to do anything at all, I'm afraid  :-(

Thanks
   Shawn
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Expert Comment

by:ewangoya
Comment Utility

The light shade is probably because it has no focus, use the two methods together
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Author Comment

by:shawn226
Comment Utility
Yes, I did try the two methods together. Did just the same as JimyX's alone.
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Expert Comment

by:ewangoya
Comment Utility

I suppose you have to save the selected index and reset it again once you go back to the tab with the ListView
I have not tested this though
procedure TForm3.PageControl1Changing(Sender: TObject;
  var AllowChange: Boolean);
begin
    FFocusedItem := ListView1.ItemFocused;
end;

procedure TForm1.PageControl1Change(Sender: TObject);
begin
  if PageControl1.ActivePage = ListViewPage then
  begin
    ListView1.ItemFocused := FFocusedItem ;
    ListView1.SetFocus;
  end;
end;

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Author Comment

by:shawn226
Comment Utility
Nope, still shows it only is a light shade of gray. I have to then manually give focus to the ListView (by clicking on a column to sort) in order for the item to be highlighted in blue.

Thanks
   Shawn
0
 
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Expert Comment

by:jimyX
Comment Utility
You can use this code at your FormOnPaint event:
procedure TForm1.FormPaint(Sender: TObject);
begin
  ListView1.SetFocus;
end;

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Author Comment

by:shawn226
Comment Utility
Thanks JimyX, but I have several tabs/screens in my program and I don't always want to have the focus on the tab with the ListView box.
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Expert Comment

by:jimyX
Comment Utility
Do you have the ListView on PageControl?
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Author Comment

by:shawn226
Comment Utility
I'm using TabbedNotebook
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Accepted Solution

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jimyX earned 50 total points
Comment Utility
Then at the TabbedNotebookOnClick event put this code:
procedure TForm1.TabbedNotebook1Click(Sender: TObject);
begin
  if TabbedNotebook1.PageIndex = 0 then  // provide the index where you have the ListView (zero is the first tab - or you can look by the tab's name)
    ListView1.SetFocus;
end;

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Expert Comment

by:RezaSadigh
Comment Utility
Hi my friend,

In your main question you said: "when I return back to my original screen that has the TListView," put the
ListView1.SetFocus; where that run when you back to your original screen.

Best regards.
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Expert Comment

by:systan
Comment Utility
Put your ListView1.SetFocus in TabbedNotebook_Enter
procedure TForm1.TabbedNotebook1Enter(Sender: TObject);
begin
...SetFocus
end;

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Expert Comment

by:systan
Comment Utility
I test this one, it works;

procedure TForm1.TabbedNotebook1Click(Sender: TObject);
begin
//SAMPLE your listView1 is in PageIndex 0
if TabbedNotebook1.PageIndex = 0 then
ListView1.SetFocus;
ListView1.Items.Item[0].Selected := True;
end;

But you can also put this lines in TabbedNotebook_Enter<probably>
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Author Closing Comment

by:shawn226
Comment Utility
That worked JimyX, thanks!

Thanks to all others who replied also!

Cheers
   Shawn
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Expert Comment

by:ewangoya
Comment Utility

How interesting, I gave the same answer but mine did not work somehow, LOL
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Author Comment

by:shawn226
Comment Utility
Ewangoya, your answer suggested using the TabbedNotebookChange event... which did not seem to work. JimyX's answer was using the TabbedNotebookClick event. Sorry!

Regards
   Shawn
0
 
LVL 14

Expert Comment

by:systan
Comment Utility
You can't see the focus without selecting the item;
ListView1.Items.Item[0].Selected := True;

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I don't agree with this; anyway it's 50 only.
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Author Comment

by:shawn226
Comment Utility
Systan - as I mentioned in my original question post, I am already selecting an item.

Regards
   Shawn
0
 
LVL 14

Expert Comment

by:systan
Comment Utility
Ok;
I got it, your looking for the pageindex, the current page to setfocus.


Good Luck
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- Cut down on emails

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