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Auto Scrolling The ListBox


Dear Sir

I am using VB6

Can anyone give me an idea how to scroll the list box automatically. So that I can go on adding the data and the same can be scrolled and the current line at the bottom can be seen automatically.

Thanks in advance

Amarjit




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Hey merrioncomputing,

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Discoverd it already
Its List1.Selected(List1.ListCount - 1) = true
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VB Code:
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I've used the object browser to search for "listbox" to see if I have two kinds of listboxs due to the libraries I have loaded, but I find only one ListBox and it is in VBA.

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Picture a Listbox (in report view) with just 2 headers.
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I hope you understand
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i currently have an UpDown1 control scrolling through these values. my problem is that when i go to submit this form, even though List1(one-lined list box) displays the time i want it is not actually selected and i cant store the value it that is displayed. ie you have to click on the time to have it highlighted/selected.
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Hello everybody!
I'm new here and have one question I couldn't find the answer yet on the net. Maybe is really simple, but I couldn't find it out.
In a list box in a form in Access, I want by clicking on the button to select the first item in the list box (this is easy) and if there are lot of items in the list, I want selected item to be visible in the box i.e. the list to scroll to the beggining. I suppose scrolling is possible in visual basic but I can't find the way to do it.

The property that easily solves the problem List1.TopIndex from VB6 is not supported by VBA (I´ve sent this message first to "Newbies" group).

Additional question: Can anybody explain me why many useful features from VB are not working in VBA??

Any idea?

Thanks in advance,

Alex

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Is there any way to have a list box autoscroll to the bottom? I want to use one in a chat program I'm building, but I don't want users to have to constantly scroll down.

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I have a form in an Access database. The records are navigated through clicking a listbox that contains all of the primary keys of the table. Everything works perfectly with the navigation, but the text box scroll bar is behaving badly.

When the listbox is populated with data, it apparently doesn't refresh its scrollbar so the extent is not known. Having 5,287 entries just thus far in this db, I need to have the listbox able to scroll to the very end or anywhere in between immediately. When I drag the scroll bar initially, the items in the listbox do not scroll with it, and if I drag it all the way to the bottom and drop it, it "readjusts" itself realizing that it isn't big enough and pops the scrollbar back up a ways. I have to do this 24 times before the scrollbar realizes how big the list is.

When it finally sizes itself correctly, it works perfectly! Everything scrolls normally and it all works great. Does anyone have a suggestion?

Sluggish Scrolling ListBox
i created a few different .EXE applications with VB6.0 which has 1 ListBox
(Standard Style and no MultiSelect)

Scrolling the Items in the ListBox is sluggish, jumpy, slightly erratic
doesn't respond correctly when using Mouse to scroll the ListBox.

same results running in IDE or as an .EXE

ListBox seems to respond normally after Computer Reboot, but in short time becomes sluggish to scroll, or scrolls in leaps or erractically jumps around.
as long as you Scroll slowly, the ListBox scrolls smoothly

if i read in a very large 10,000+ line Text File into the ListBox, it scrolls smoothly and very fast......if i AddItem 100 or to 1000 Lines, it eventually scrolls sluggish/jumpy,erratic.

Listbox Scrolling Looks Backwards
I've noticed this for a while and I see it is fixed in VB.NET.. but is there any way to make Listboxes not look like they are scrolling up when scrolling down?

Has anyone else noticed this? When you use the mouse wheel to scroll down a few lines in a listbox, the actual listbox view area looks as if it is going up.. even tho the new values it displays are the correct lines. But its ugly.

Listbox Scrolling Problem
I have a Listbox with 100 items in it and a command button. The code
behind the command button says

If list1.selected (i) = true
list1.topindex = list1.listindex
end if

Which brings the item selected to the top of the listbox.

This works fine, until I manually scroll to the bottom of the listbox,
select an item, and click the command button.. Then the selected item doesn't automatically scroll to the top.

Any ideas how I can get this to work ?

Problem With Listbox Scrolling
Sometimes when i add an item to my listbox i´m unable to se the whole content of the item because the content is to long.

Thats why I´m using this code so i can make a horizontal scrollbar appear if it is necessary:


VB Code:
Private Declare Function SendMessageByNum Lib "user32" _Alias "SendMessageA" (ByVal hwnd As Long, ByVal _wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As LongConst LB_SETHORIZONTALEXTENT = &H194  Public Sub SetListBoxWidth(ByRef MyListbox As ListBox)Dim MyTextWidth As LongMyTextWidth = 0  For j = 0 To MyListbox.ListCount - 1   If TextWidth(MyListbox.List(j))  > MyTextWidth Then     MyTextWidth = TextWidth(MyListbox.List(j))  End If Next j  If ScaleMode = vbTwips Then    MyTextWidth = MyTextWidth / Screen.TwipsPerPixelX      ' if twips change to pixels    SendMessageByNum MyListbox.hwnd, LB_SETHORIZONTALEXTENT, MyTextWidth, 0End If End Sub



Now, if i add a string to my listbox that looks something like this...:

mylistbox.additem "begin mystring" & vbtab & "end mystring"


...the code that makes the scrollbar appear doesn´t make the scrollbar long enough, so i can´t scroll enough to see the whole content of the item.

But if i add a string that looks like this...:

mylistbox.additem "begin mystring" & " " & "end mystring"

...the code that makes the scrollbar appear, now makes it long enough so i actually can see the whole content of the item. I have figured out that it must have something to do with vbTab, but i can´t understand what.

This is the code i use to set the tab-value:


VB Code:
Global Const LB_SETTABSTOPS As Long = &H192&    Declare Function SendMessage& Lib "user32" Alias "SendMessageA" (ByVal hWnd&, ByVal _  wMsg&, ByVal wParam&, lParam As Any)    Public Sub Tabstopp() ReDim tabstops(0) As Long tabstops(0) = 130     Call SendMessage(Lvisamaltid.hwnd, LB_SETTABSTOPS, 1&, tabstops(0))End Sub



Do u guys know what the problem is?

Problem With Scrolling Down Listbox
VB Code:
list1.listindex = list1.listindex + 1


When I use this it gives me an error.
"Invalid Property Value"

How do I fix this? Its just simply suppose to scroll down the list.

Scrolling Through A ListBox With Up/down Arrows
Is it possible to code a ListBox so that the user can scroll through the items using the up and down arrows? I did a search on previous postings and didn't see this particular question asked by anybody.

Listbox Enabled And Scrolling
I have a multiselection listbox with a number of checkbox styled items. I would like the use to be able to stroll through the list but not change the selection. - (Type of Access Control) -

Setting the Enabled property to false prevents the user scrolling as well as the input.

Is there a simple way to prevent selection changes but allow scrolling.

Ant help would be appreciated.

Scrolling A Disabled Listbox???
Hi!

Is there any way to enable scrolling in a listbox, which allows no entries (enabled=false)???

Thanks for your help

Automatic Listbox Scrolling Down?
Hi there.

I'm using a listbox to keep a log of messages entered, and computer responses (not dissimilar to the Messenger chat log window), and I was wondering if anyone could help me have the listbox scroll to the bottom automatically, after each entry. Also... does anyone know if it's possible to alter text style (such as colour, for example) within a single listbox entry?
For example:

You said: Hello
      ^     ^
    red    blue

Or even if it could be set up to work as two separate entries, on different lines - I just don't know how to alter listbox entry colour. I'd be extremely grateful for any help offered.

Thanks again,
Adam.



Edited by - The Milkybar Kid on 11/15/2003 1:36:31 PM

How Can I Automate Scrolling In A Listbox.
I currently use a textbox and a listbox. When type in the textbox it calls an api that finds the closest match in the listbox.
The item is selected in the bottom of the listbox. I would like to, however, see it selected in the top of the listbox. When I click on the vertical scrollbar i can move the items up to the top, that is what I want. I have no idea how to do it, because the listbox does not expose the scroll event. Any idea of an api that can help ?

thanks,

robert

This is what I use now, which shows the found item at the bottom of the listbox:
Code:


Private Declare Function SendMessage Lib _
"user32" Alias "SendMessageA" (ByVal hWnd _
As Long, ByVal wMsg As Integer, ByVal _
wParam As Integer, lParam As Any) As Long

Const LB_FINDSTRING = &H18F

Private Sub txtsearch_Change()

        List1.ListIndex = SendMessage(List1.hWnd, _
        LB_FINDSTRING, -1, ByVal txtsearch.Text)
        txtsearch.SetFocus

End Sub

Listbox Automatic Scrolling Down?
Hi there.

I'm using a listbox to keep a log of messages entered, and computer responses (not dissimilar to the Messenger chat log window), and I was wondering if anyone could help me have the listbox scroll to the bottom automatically, after each entry. Also... does anyone know if it's possible to alter text style (such as colour, for example) within a single listbox entry?
For example:

You said: Hello
      ^ ^
    red blue

Or even if it could be set up to work as two separate entries, on different lines - I just don't know how to alter listbox entry colour. I'd be extremely grateful for any help offered.

Thanks again,
Adam.

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