Re: SaveBarState Fails when it is called from a thread

From:
"Tom Serface" <tserface@msn.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Wed, 9 Jul 2008 14:55:49 -0700
Message-ID:
<up9EN6g4IHA.4448@TK2MSFTNGP05.phx.gbl>
Yes, that's one place where the forums are better (you get instant
gratification). It does take a few seconds at least, sometimes minutes, for
a message to post and it's easy to see where someone new would just think it
didn't work and keep retrying it like an email that was bounced.

Good point.

Tom

"Ajay Kalra" <ajaykalra@yahoo.com> wrote in message
news:249ED19C-A13B-4D72-97AF-857F718FB231@microsoft.com...

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.

--
Ajay

"Tom Serface" <tserface@msn.com> wrote in message
news:%236ulLff4IHA.5112@TK2MSFTNGP05.phx.gbl...

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)

Tom

"Joseph M. Newcomer" <newcomer@flounder.com> wrote in message
news:o4g974147fo4m2v41lmo2b959kdbvhs38l@4ax.com...

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.
joe

On Wed, 9 Jul 2008 05:45:21 -0700 (PDT), Faisal <faisalm83@gmail.com>
wrote:

Hi,

In my application, I use SaveBarState() for persisting control bar
state.
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
thread

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
MODULE_STATE.

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]
email: newcomer@flounder.com
Web: http://www.flounder.com
MVP Tips: http://www.flounder.com/mvp_tips.htm

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