Forum

Hi,

we use a tabmdi derived from the CExtTabMdiWhidbeyWnd, we override the OnTabSyncVisibility with

void COurTabMdi::OnTabWndSyncVisibility()
{
    ASSERT_VALID( this );
    if( GetSafeHwnd() == NULL )
        return;
    
    OurFrame * pMainFrame = STATIC_DOWNCAST( OurFrame, GetParent() );

    ASSERT_VALID( pMainFrame );
    
    if( !pMainFrame->IsStandardMDI() )
    {
        CExtTabMdiWhidbeyWnd::OnTabWndSyncVisibility();
        return;
    }

    DWORD dwWndStyle = GetStyle();
    if( (dwWndStyle & WS_VISIBLE) == 0 )
        return;
    
    ::SetWindowPos(
        m_hWnd,
        NULL, 0, 0, 0, 0,
        SWP_NOSIZE|SWP_NOMOVE
            |SWP_NOZORDER|SWP_NOOWNERZORDER
            |SWP_NOREPOSITION
            |SWP_HIDEWINDOW
        );
}


To open 41 docs without the TabMdi, it requires 23 sec.
To open the same 41 docs, with the TabMdi, it require 1 min 48 sec.

Any suggestion? We use 2.70 version of the toolkit.

The ProfStudio sample application demonstrates how to implement on-the-fly switching between classic MDI and tabbed MDI interfaces. The MDI tab window persistently exists in this sample application. It is visible in the tabbed mode and invisible in the classic mode. The implementation is based on overriding the CExtTabWnd::OnTabWndSyncVisibility() virtual method. So you can try turning on the tabbed MDI interface after all your documents are created.