Re: Toolbar doesn't react on first click.

Hello everyone. I create program with one toolbar and few CWnd objects in
CFrameWnd. Only one window (CWnd) is shown at time. When I start some
action on this window (OnLButtonUp and OnlButtonDown) program makes few
expensive calculation, next he hides window (SW_HIDE), and shows another
(SW_SHOW). But sometimes when I make double-click on window, everything
show OK, but toolbar freeze (doesn't react on first click and I must click
him once more). I try to override OnLButtonDblClk but my application never
goes in to. I thing the problem are messages that are pushed to queue when
program makes this calculation. I must fix this bug as fast as possible,
so I try to override Run method. Before program start calculation I set
semaphore up, then I start calculation, clear message queue, and after
calculations semaphore goes down. I don't know it is good solution anyway
I probably making something wrong because i.e. WM_SETFOCUS messages are
still received by window even when semaphore is up. Any help will be
great. This is my override Run method:

volatile bool someFocus = false;
// semaphore
volatile bool youCanPump = true;

int CDodaApp::Run()
{
  youCanPump = true;
  someFocus = false;

  if (m_pMainWnd == NULL && AfxOleGetUserCtrl())
  {
    // Not launched /Embedding or /Automation, but has
    no main window!
      TRACE0("Warning: m_pMainWnd is NULL in CWinApp::Run
          - quitting application.\n");
    AfxPostQuitMessage(0);
  }
  ASSERT_VALID(this);

  // for tracking the idle time state
  BOOL bIdle = TRUE;
  LONG lIdleCount = 0;

  // acquire and dispatch messages until a WM_QUIT message
  is received.
    for (;;)
    {
      if(youCanPump == true)
      {
        // phase1: check to see if we can do idle work
        while (bIdle && !::PeekMessage(&m_msgCur, NULL,
              NULL, NULL, PM_NOREMOVE))
        {
          // call OnIdle while in bIdle state
          if (!OnIdle(lIdleCount++))
            bIdle = FALSE; // assume "no idle" state
        }

        // phase2: pump messages while available
        do
        {
          if(m_msgCur.message == WM_SETFOCUS ||
              m_msgCur.message == WM_KILLFOCUS)
            someFocus = true;

          // pump message, but quit on WM_QUIT
          if (!PumpMessage())
            return ExitInstance();

          // reset "no idle" state after pumping
          "normal" message
            if (IsIdleMessage(&m_msgCur))
            {
              bIdle = TRUE;
              lIdleCount = 0;
            }

        } while (::PeekMessage(&m_msgCur, NULL, NULL,
              NULL, PM_NOREMOVE));
      }
      else
      {
        while(::PeekMessage(&m_msgCur, NULL, NULL, NULL,
              PM_REMOVE))
          if(m_msgCur.message == WM_SETFOCUS ||
              m_msgCur.message == WM_KILLFOCUS)
            someFocus = true;
      }
    }
  ASSERT(FALSE); // not reachable
}