TabControl shows abnormal after UAC

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Hi all:

I use the normal way to create the Tab in MFC,
and I find a problem about Tab control, recently.
The Tab is abnormal after I opened the another application with User Account Control(UAC) in Win7.
Like this picture: http://i.imgur.com/xntxhDV.jpg[^]
When the problem happened, it still can use, and if I selected the another page in Tab, it's gonna normal!
I think it happened because the slices of display is not normal after the UAC...
Hope someone can give me a hand,
thank you!!

I pasted my Tab code below:
in OnInitDialog( ):

C++

TCITEM tc1,tc2;
tc1.mask = TCIF_TEXT;
tc1.pszText = _T("page1");
tc2.mask = TCIF_TEXT;
tc2.pszText = _T("page2");

m_tab.InsertItem(0, &tc1);
m_tab.InsertItem(1, &tc2);

CRect rec;
m_tab.GetClientRect(&rec);

    //I don't show the edge about Tab
rec.bottom += 0;
rec.left -= 0;
rec.top += 20;
rec.right -= 0;

m_page1.Create(IDD_DIALOG1, GetDlgItem(IDC_TAB1));
m_page2.Create(IDD_DIALOG2, GetDlgItem(IDC_TAB1));
m_page1.MoveWindow(&rec);
m_page2.MoveWindow(&rec);
m_page1.ShowWindow(SW_SHOW);
m_page2.ShowWindow(SW_HIDE);

C++

void Ctab3Dlg::OnSelchangeTab(NMHDR* pNMHDR, LRESULT* pResult) 
{  
   switch (m_tab.GetCurSel()) 
    { 
      case 0: 
            m_page1.ShowWindow(SW_SHOW); 
            m_page2.ShowWindow(SW_HIDE ); 
            break; 
       case 1: 
            m_page1.ShowWindow(SW_HIDE); 
            m_page2.ShowWindow(SW_SHOW); 
            break; 
      default: 
            break; 
    }
	*pResult = 0; 
}

Posted 3-Dec-13 18:55pm

Member 10307999

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Comments

chaau 4-Dec-13 1:15am

What is the the base class of your m_page1 and m_page2. I think the second parameter of the Create function (GetDlgItem(IDC_TAB1)) is incorrect

Sergey Alexandrovich Kryukov 4-Dec-13 1:57am

Hard to believe it could be related to UAC. It could be something else. Try to open any full-screen window and remove it, move this application out of screen and put back, or Ctrl+Alt+Del, or something like that, related to window update. It would be good to reproduce the problem is some other way.
—SA

Member 10307999 4-Dec-13 3:17am

thanks for your reply, Kryukov! I have tried the way which you said, and I found it will happen in Ctrl+Alt+Del, too... But the other cases didn't abnormal@@

Sergey Alexandrovich Kryukov 4-Dec-13 3:24am

This is what I expected. It is related to redrawing/invalidation of the image in form. Now, after you got abnormal view, could you try to invalidate it? For this purpose, drag your application window half-way behind the edge of the screen, and than drag back. Will the view get to normal in the part of the window which was hidden, after you drag it back? I don't know you desktop settings, so stop the dragging (release mouse button) when window is half-hidden, then drag back again.
—SA

Member 10307999 4-Dec-13 4:28am

I tried the test which you said, and it's normal. The abnormal display appears only if I press Ctrl+Alt+Del or opened the another application with UAC. I don't know why...

Sergey Alexandrovich Kryukov 4-Dec-13 9:24am

No, this is not what I asked you to try. Sorry if I was not clear enough. I tried to ask you to do one step after another.
1) make "abnormal" view using Ctrl+Alt+Del
2) having "abnormal" view, half-hide the window as described above, and then show it to see if the view "normalizes" after the part which was hidden and then was exposed.
—SA

Member 10307999 5-Dec-13 0:46am

thanks for your reply again!
Sorry, I don't know what the "half-hide" is,
so I can't understand what you said in step2.
Could you illustrate clearly?
Appreciation!!

Sergey Alexandrovich Kryukov 5-Dec-13 0:53am

This step 2 is described in the previous comment, 4 posts above, starting from the words "This is what I expected".
—SA

Member 10307999 5-Dec-13 20:41pm

Yes, you are right!
That situation happened in my application!
How can I solve this problem?
Thank you!

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Sergey Alexandrovich Kryukov · Answer 1 · 2013-12-05T16:01:00

Solution 1

We have done some interactive experiments (please see comments to the question) in attempts to more accurately characterize the symptom and eventually locate the problem. As I suspected, something in the code, which I cannot see from the code sample, prevents proper re-rendering of all the graphics. For the next step, try to experiment with two functions: CWnd::Invalidate (first of all) or CWnd::RedrawWindow:
http://msdn.microsoft.com/en-us/library/ax04k970.aspx[^],
http://msdn.microsoft.com/en-us/library/0fdz8ey6.aspx[^].

See also: http://msdn.microsoft.com/en-us/library/btaacw58.aspx[^].

In particular, the to invalidate or redraw it in a handler of the message WM_ACTIVATE:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms646274%28v=vs.85%29.aspx[^].

—SA

Posted 5-Dec-13 16:01pm

Sergey Alexandrovich Kryukov

Comments

Member 10307999 6-Dec-13 2:36am

Thank you, SA!! there methods can solve the abnormal Tab.
Because I don't know when the user redraw the desktop of OS(I guessed what causes the abnormal), I scanned the application by OnTimer function (0.5 sec),
but it let my application glistened.
I only wanted to redraw the Tab Page, so I used the SetRedraw() to reduce the redraw area,
but it still glistened obviously T_T
I think if there is a function that could judge the desktop of OS has redraw, and then I can SetRedraw() if the OS has redraw.
Thanks a lot!!

Sergey Alexandrovich Kryukov 6-Dec-13 11:33am

Consider this as the intermediate step. Scanning anything by timer (polling) is of course unacceptable. Did you handle WM_ACTIVATE? Maybe it does not fire...
—SA

Member 10307999 8-Dec-13 9:28am

I have read the WM_ACTIVATE form your link, but I still don't understand how to use it...
Would you teach me how to use it, maybe a easy example, please.
Thanks for your help!!

Sergey Alexandrovich Kryukov 8-Dec-13 12:33pm

Handling windows messages in MFC is ugly. Just read about it.
But I cannot imagine that you did not handle them before, I though Windows programming is nearly impossible without it.
But in this case, you can override CWnd::OnActivate...
With messages, start here: http://msdn.microsoft.com/en-us/library/6d1asasd.aspx.
—SA

Member 10307999 9-Dec-13 4:24am

I try it:

void TabDlg::OnActivate(UINT nState,CWnd* pWndOther,BOOL bMinimized )
{
switch(nState)
{
case WA_CLICKACTIVE:
case WA_ACTIVE:
case WA_INACTIVE:
{
m_tab.SetRedraw(true);
}
break;
default:
break;
}
CDialog::OnActivate(nState,pWndOther,bMinimized);
}

, but the abnormal display was still alive :(
Only when I clicked the application anywhere, the display became normal
(by WA_CLICKACTIVE).
Did I miss something@@?
thanks!!

Sergey Alexandrovich Kryukov 9-Dec-13 10:39am

On this event, you need Invalidate or Redraw, not SetRedraw...
—SA

Member 10307999 9-Dec-13 22:33pm

I'm so sorry for spending your a lot of time.
I have tried what you taught me. However, it's similar like the SetRedraw().
Furthermore, I find a new thing(maybe it's the real problem for this case) when the application run and I opened the explorer.exe(ex. any folder), the application became abnormal display, too.
Is there any notification can retrieve the event?
In addition, if you will, I can sent my code for you.
Thank you!

Sergey Alexandrovich Kryukov 10-Dec-13 1:44am

Ah, it's getting even funnier... Well, you should understand that what you do is still the study. There must be a root cause. As to the code, didn't you already post it, referenced in your new post (re-post, by the way)? Or is it something different?
—SA