$WS_CLIPCHILDREN and Edit control's scroll bar

[teet 0]

Hi,

I have been suffered with this issue for quite a while. Basically when the main window is created with $WS_CLIPCHILDREN, the Edit control which is created inside a tab, will have trouble showing its scroll bars when I switch the tabs. The scroll bars will not show up until I move the mouse upon the edit control. I have tried several creation style and exstyle combination for both the window and the edit controls. No luck. Any suggestions for this scroll bar display issue? Thanks in advance!

My code:

#include <GUIConstants.au3>

#include <WindowsConstants.au3>

#include <EditConstants.au3>

GUICreate("Tabs",1024,700, -1, -1, $WS_MAXIMIZEBOX + $WS_MINIMIZEBOX + $WS_SIZEBOX + $WS_CLIPCHILDREN)

GUISetFont(9, 300)

$tab=GUICtrlCreateTab (10,10, 1000,677)

$tabA=GUICtrlCreateTabitem ("Tab A")

$edit1 = GUICtrlCreateEdit("", 20, 65, 370, 280, $WS_VSCROLL + $WS_HSCROLL + $ES_READONLY)

$tabB=GUICtrlCreateTabitem ( "Tab B")

$edit2 = GUICtrlCreateEdit("", 20, 65, 370, 280, $WS_VSCROLL + $WS_HSCROLL + $ES_READONLY)

GUICtrlSetState(-1,$GUI_SHOW)

GUISetState ()

While 1

$msg = GUIGetMsg()

If $msg = $GUI_EVENT_CLOSE Then ExitLoop

Wend

[Melba23 3,457]

teet,

Welcome to the AutoIt forum.

As the $WS_CLIPCHILDREN style "Excludes the area occupied by child windows when drawing occurs within the parent window", it is hardly surprising that your edit controls do not redraw when required!

So why use it in your script? What does it bring you?

By the way, you should use BitOR when combining styles - look at the Setting Styles tutorial in the Wiki to see why.

M23

[teet 0]

Melba,

Thanks for your input! I'll use BitOR from now on

I have a main window which is composed of three parts.

1) There are some icon buttons on top of the window. User can start/pause/stop the application by clicking the icon buttons.

2) In the middle area, an embeded IE object showing multiple website query result.

3) An edit control in the bottom logging the running status.

If I don't use $WS_CLIPCHILDREN, all child windows(icon buttons, Edit control..) will redraw again and again each time the IE object is loading and rendering a page. I don't like this happened. It looks like the whole window keeps on refreshing. So I use $WS_CLIPCHILDREN when creating the main window. Everything works fine to me except the Edit's scroll bars

Teet

[ArtArt 0]

Hi! - I have the same problem:

I have a CRichEditCtrl on a CTabCtrl on a CDialog.

I wish to be flickerless everything.

So, both the dialog and the tab is created with WS_CLIPCHILDREN extra style.

But my vertical scrollbar on the CRichEditCtrl does not update during scrolling with mouse.

I had not found better solution than the following:

void CFlickerlessRichEdit::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)

{

SetScrollPos(SB_VERT, nPos, 0);

CRichEditCtrl::OnVScroll(nSBCode, nPos, pScrollBar);

}

Edited March 17, 2013 by ArtArt

[Melba23 3,457]

ArtArt,

That does not look like AutoIt syntax and this is the AutoIt forum. Are you sure you are posting in the correct place?

M23

[ArtArt 0]

You are right, sorry, I had the same problem in Visual C++. Do you want to remove it? :s

[Melba23 3,457]

ArtArt,

No, we shall leave the posts as a warning to the unwary!

M23