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list view

Ok this is kind of a stupid question but i have a ListView with a lot of entries in it that it is about 4 or 5 pages long.  At certains i want to highlight a certain entry and show it to the user, so i use
lvw.listitems(xx).selected=true
lvw.ensurevisible.
The problem i am having is if the item i want is lower on the list than the currently selected item it will scroll down to the page and highlight it.  But if the item is higher it doesn't scroll up to it, but when i manually scroll it is highlight.  Anyone have any idea what i am doing wrong?
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MChu
Asked:
MChu
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1 Solution
 
Dave_GreeneCommented:
I think this is a glitch with the LV control

Here is what I have done in the past, up to the top then down to the desired element... Not pretty but it works

With lvw
   .ListItems.Item(1).EnsureVisible
   .ListItems(RealIndexYouWant).selected = true
   .ListItems.Item(RealIndexYouWant).EnsureVisible
End With
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MChuAuthor Commented:
It doesn't work.  Does it work for you?
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MChuAuthor Commented:
In listbox there is a property for topindex, is there a similar property for listview?
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Dave_GreeneCommented:
Give this a shot... been a little while

lvw.ListItems(1).EnsureVisible = True
lvw.ListItems(RealIndexYouWant).selected = true
lvw.ListItems(RealIndexYouWant).EnsureVisible = True
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MChuAuthor Commented:
I did, i cut and paste but didn't work.  Any other ideas?
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Dave_GreeneCommented:
Try switching them

lvw.ListItems(RealIndexYouWant).EnsureVisible = True
lvw.ListItems(RealIndexYouWant).selected = true
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Richie_SimonettiCommented:
I think you cannot get that withoutr using API.
It is just a thought.
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ArkCommented:
Just add SetFocus:

Private Sub Command1_Click()
   ListView1.ListItems(100).EnsureVisible
   ListView1.ListItems(100).Selected = True
   ListView1.SetFocus
End Sub

Private Sub Form_Load()
  ListView1.View = lvwReport
  ListView1.ColumnHeaders.Add , , "Items"
  For i = 1 To 200
     ListView1.ListItems.Add , , "Item No. " & CStr(i)
  Next i
End Sub
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ArkCommented:
PS. tested both vb5/vb6 controls - works fine

Cheers
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ArkCommented:
Hi
Alternate Function:

Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Const LVM_FIRST = &H1000
Const LVM_SCROLL = (LVM_FIRST + 20)

Private Sub ScrollToIndex(ByVal nIndex As Long)
   Dim nTopIndex As Long, yScroll As Long
   nTopIndex = ListView1.GetFirstVisible.Index
   yScroll = ListView1.ListItems(1).Height \ Screen.TwipsPerPixelY
   yScroll = yScroll * (nIndex - nTopIndex)
   Call SendMessage(ListView1.hWnd, LVM_SCROLL, 0, ByVal yScroll)
   ListView1.ListItems(nIndex).Selected = True
   ListView1.SetFocus
End Sub


Cheers
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MChuAuthor Commented:
Hmm, When i try your code on a brand new project it worked.  But on my current one it doesn't, which probably means that the problem is coming from somewhere else.  I am going to give the points to ark since he made me realize this.  Thanks everyone for your help.
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MChuAuthor Commented:
Nice code, even clear to understand even though it didn't solve my problem.
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ArkCommented:
Thanks for points, glad I could help you.
BTW, look at ScrollToIndex Sub - it works as fast as EnsureVisible, but always put Selected Item on top of the list, even if it's already visible.

Cheers
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