posted April 18, 2001 12:07 PM            

My first question is when I resize the Listbox control to the parents
client area inside the WM_SIZE block...
[code
CASE %WM_SIZE
Call GetClientRect( hWnd,rc )
x& = 0
y& = 0
cx& = rc.nRight
cy& = rc.nBottom -10
Call MoveWindow( hVList1, x&, y&, cx&, cy&, 1 )
Call SendMessage( hVList1, %VLB_SIZEHANDLER, 0, 0 )
Call InvalidateRect( hVList1, ByVal %NULL, 1 )
Call UpdateWindow( hVList1 )
[/code]

This seems to work except for when the List has been scrolled to
near the bottom, at that point, just before I resize the control,
the scrollbar becomes nonfunctional until I page back up to the top.

Is their another message that will update the scrollbar? Or have I
incorrectly resized the VListbox control?

Next, for Borje, I was wondering, "in-a-no-pressure-kind-of-a-way"
if you have you added the HorzScrollbar handler yet?

In anycase, I need to dig deeper into the C/C's include file to see
if I should make some changes.

Many Thanks!
Regards,
Jules

posted April 18, 2001 03:53 PM            

           @v.wFirstLine = MAX&(0, MIN&(@v.wFirstLine, @v.tLineCount - @v.wMaxHeight + 1))

Also, I have some other things I want to add to it too, like tab
position handling, possibility to use different column colors and
grid lines, etc. Most of that code is ready - I use it in the latest
beta of Poffs. It's a bit of a mess that needs to be cleaned up before
I release it though, because otherwise people will get a lot trouble,
trying to understand how to use it properly..

I say like PB - next update will fix all these things..

posted April 18, 2001 05:03 PM            

Mike

posted April 18, 2001 07:16 PM            

Borje, your countryman, Mats Sundin did his job tonight, clean sweep'd the Sen's.
He is well worth the $4M/yr! On to the next round of the playoffs.
Go! Leafs Go!

I had a chance to go over the pbvlist.inc custom control and better understand
it's functionality. I am going to add the Horz Scroll handler now and I
am going to add some additional stuff for the WM_PAINT block.

Great work Borje! I have had alot of fun with all your hard work.

Regards,
Jules

posted April 23, 2001 08:41 AM            

Regarding the Vertical ScrollBar Thumb tracking...

Before I started to add the Horziontal Scrollbar handler, I noticed that
when the VList control is maximized(my screen 1024x768) the mouse arrow
does not track the Vscroll bar thumb correctly. I have tried a few
optimizations, even used stand alone ScrollBars too see if I can improve
it, without any luck so far. I have done some other optimizations inside
the WM_PAINT handler, with no luck either. I have come to the conclusion
that the delayed response is directly proportional to the time it takes
to refresh the screen.

For my testing, I only loaded up the VLIST with 1000 items and drag the
Vscroll Thumb up and down less than fast. The smaller the Client area,
the better the tracking. But for my Hex Editor, I want to have a sizable
frame and in most cases it will be maximized to fit the Main Window.

Hmmm... The Editor control in your Poffs 2nd generation does the same thing.
There must be a solution here, since most Programmers editors mouse Arrow seems
to track very well.

If anyone has any thoughts/tips/solutions, please kindly express them here.

Thank you kindly,
Regards,
Jules

'-------------------------
EMAIL: jmarchildon@look.ca

posted April 23, 2001 03:02 PM            

Reason is line parsing and painting different syntax highlight colors
takes extra time. Large screen means more lines to draw, so speed is
slower.

Something that may improve performance is by setting Class style to 0
and hbrBackground to %NULL. The list takes care of all painting anyway,
so those things aren't really needed. Other than that - have you added
any parsing code to your control yet? If so, maybe that is where to look
for slow down. Plain virtual list looks alright here for me, but as
I said, in editor and syntax highlight on, it kind of floats a bit due
to all the extra things that must be dealt with.

Improvements to both list and editor is in the makes, but my time
is very limited right now, so it may take a while before I can have
them ready for release.

posted April 23, 2001 07:22 PM            

Yes, your observation is correct...
"the mouse arrow isn't "stuck" to the scrollbar drag handle?"
"it kind of floats a bit"

My machine is 360MHZ, the test code just uses your memdc with
textout and finally blit'd, nothing more than that for now while
I investigate it. On my machine, I do not see the PB/IDE behave
as such even with syntax on and 15000 lines of code. Maybe different
for other machines.

Okay, no big deal, I can live with that, just poking around for clues.
And Borje, many thanks for all your hard work and sharing this with the
PB community... Your'e the GREATEST!!!!!

posted April 28, 2001 07:08 PM            

Why this is so, I can't really understand - but it works..

------------------

posted April 29, 2001 07:48 PM            

Regards,
Jules

posted April 15, 2003 06:13 PM            

Love your Virtual ListBox. However I'm having a problem getting
the highlight to show when I resort (reorder) the array.

In the following code the array displays fine but there is no
highlight until an arrow key (or mouse click) unless the
Index_Item_Number_To_Display is within the first few items
in the list (28 in my screen). If an Up/Down arrow key the
highlight jumps to the Item adjacent to
Index_Item_Number_To_Display so %VLB_SETSELECTED is doing its
job. I just can't get the highlight to display until a
key is pressed.

' %VLB_SETSELECTED  - sets selected line number ((array item)
' wParam = Line to select.
' lParam = Redraw flag. %TRUE to redraw, %FALSE to ignore
  lprm = %True '%False
    SendMessage hVList1, %VLB_SETSELECTED, Index_Item_Number_To_Display, lprm
      SetFocus hVList1
      '' didn't work
'    Control Redraw  hDlg, %Id_ListBox
       '' none of these work either
'    SendMessage hVList1, %VLB_SETTOPLINE, Index_Record_To_Display, lprm 
'    SendMessage hVList1, %VLB_REFRESH, 0, 0 'array order changed so refresh
' %VLB_SETTOPLINE   - sets first visible line in control
' wParam = Line to show as top (first visible) line.
' lParam = Redraw flag. %TRUE to redraw, %FALSE to ignore
' Returns: Index of top line, or -1 if no items are available.
' Example: index = SendMessage(hWndCtrl, %VLB_SETTOPLINE, TopLine, %TRUE)
      'doesn't work either
'   ListBox Select hDlg, %Id_ListBox, Index_Item_Number_To_Display 'Highlight     

------------------
Thx............Gösta
Gosta@SwedesDock.com
http://www.SwedesDock.com
http://www.PondersBible.com

posted April 15, 2003 06:44 PM            

  SendMessage hVList1, %VLB_SETSELECTED, selLine, 0
  SendMessage hVList1, %VLB_SETTOPLINE,  selLine, 1

So not sure I understand what you mean. Maybe you can use small sample code
to reproduce the problem?

posted April 16, 2003 07:01 AM            

quote:

---

Originally posted by Borje Hagsten:
Thanks! Hm, following works for me, like if I want selLine to show up at top:

  SendMessage hVList1, %VLB_SETSELECTED, selLine, 0
  SendMessage hVList1, %VLB_SETTOPLINE,  selLine, 1

This way is also used in POFFS, which uses this virtual list for found items,
when "header" is clicked for sort and selected item stays visible after sort.
...<snip>

---

Works for me too .......... NOW!.

Tried all kinds of combinations but just never hit the right one.

Or maybe VBL just wouldn't work until it had been "blessed" by
the master. {grin}

Thanks.

posted April 16, 2003 08:31 AM            

I'm not understanding something here (What else is new?).
When my program increments the list item number past what is
showing in the VLB, the list doesn't visibly scroll unless I
send a %VLB_SETTOPLINE.

I send:

Sub VBL_Highlight(Item_To_HighLight AS LONG)                    
    '-1 because VLB array starts at 0 and mine starts at 1
    SendMessage hVList1, %VLB_SETSELECTED, Item_To_HighLight - 1, 1
  ''If I rem out next line (%VLB_SETTOPLINE), highlight moves but doesn't show
  ''if highlight moves past last dosplayed item.
  ''though correct item is selected. IOW the VBL array doesn't move down in
  ''te Virtual Listbox
     SendMessage hVList1, %VLB_SETTOPLINE,  Item_To_HighLight -1 , 1
  '' Note %VLB_SETTOPLINE (if not remmed) works as expected and the highlight shows as the 
  '' first item in the displayed portion of the list (which is fine). 
End Sub

I guess what I thought by looking at it is that %VLB_SETSELECTED
would (all by itself) highlight the Item_To_HighLight and if
Item_To_HighLight was greater than the highest item displayed
the list would move up to show Item_To_HighLight as the bottom
displayed item.

------------------
Thx............Gösta
Gosta@SwedesDock.com
http://www.SwedesDock.com
http://www.PondersBible.com

posted April 16, 2003 09:34 AM            

'in PBVlist.inc, add an equate like:
%VLB_SETCURSEL   = %WM_USER + 9  'wParam sets sel. Behaviour like LB_SETCURSEL.
 
 
'in PBVlist.inc - VListProc - paste the following right before %VLB_GETTOPLINE message:
 
     CASE %VLB_SETCURSEL
        IF wParam < 0 THEN
           @v.SelLine = -1
        ELSE
           @v.SelLine = MIN&(wParam, @v.tLineCount)
           IF @v.SelLine < @v.wFirstLine THEN
              @v.wFirstLine = @v.SelLine
           ELSEIF @v.SelLine > @v.wFirstLine + @v.wMaxHeight - 1 THEN
              @v.wFirstLine = MIN&(@v.SelLine - @v.wMaxHeight + 1, @v.tLineCount - @v.wMaxHeight + 1)
           END IF
        END IF
 
        SetPBVLScrollData hwnd, @v.wMaxHeight, MAX&(0, @v.tLineCount), @v.wFirstLine, %SB_VERT
        InvalidateRect hWnd, BYVAL %NULL, 0 : UpdateWindow hwnd
        FUNCTION = @v.SelLine
 
 
'then use in code, like
  SendMessage hVList1, %VLB_SETCURSEL, Item_To_HighLight, 0

posted April 16, 2003 05:24 PM            

You da bomb! (American teenager slang for The Best{grin})

------------------
Thx............Gösta
Gosta@SwedesDock.com
http://www.SwedesDock.com
http://www.PondersBible.com