Re: SaveBarState Fails when it is called from a thread

"Ajay Kalra" <>
Wed, 9 Jul 2008 16:30:18 -0400
I think its just the time it takes to show up on the server. Its common for
some to do it many times until it shows up.


"Tom Serface" <> wrote in message

Hi Joe,

OP must have had something else going on (I think it was unintentional)
since some of the "copies" came after I responded. Sometimes, rarely, but
sometimes, these newgroup readers go crazy on us :o)


"Joseph M. Newcomer" <> wrote in message

I counted seven copies of this post. Generally, one copy is sufficient.
You have to
allow time for your request to propagate through the servers; it is not
an instantaneous
update. Please post a question only once.

On Wed, 9 Jul 2008 05:45:21 -0700 (PDT), Faisal <>


In my application, I use SaveBarState() for persisting control bar
The code fragment is something like this.

void CMainFrame::OnSavePersistance()
SaveBarState(_T("My Persistence"));
      // Saves some information to an xml file

Since my xml saving takes some time I changed the code to execute in a

UINT ThreadFn(LPVOID pParam)
CMainFrame* pThis = (CMainFrame*)pParam;
pThis->SaveBarState(_T("My Persistence"));

return 0;

void CMainFrame::OnCntrlbartst()
AfxBeginThread( ThreadFn, this );

But, now in the thread function SaveBarState() fails. It shows some
assertion in debug version. I think it is due to some mismatch in

statck trace for assert
CWnd::AssertValid() line 879 + 25 bytes
CControlBar::AssertValid() line 976
CStatusBar::AssertValid() line 732
AfxAssertValidObject(const CObject * 0x00431510 {CStatusBar
hWnd=0x00180c7e}, const char * 0x5f4ccfe8 THIS_FILE, int 531) line 108
CControlBar::GetBarInfo(CControlBarInfo * 0x00433d70) line 534
CFrameWnd::GetDockState(CDockState & {CDockState}) line 520
CFrameWnd::SaveBarState(const char * 0x0041844c `string') line 443
ThreadFn(void * 0x00431450) line 174

How can I avoid this problem?

Joseph M. Newcomer [MVP]
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