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You wrote in another thread:"Additionally we advise you to change the design of your IE embedded bar because Prof-UIS toolbars have a different style. It is possible to subclass the IE-bar which is inserted directly into the rebar common control. You can subclass the IE toolbar window with the CExtToolControlBar class. As a result you will have a solid Prof-UIS-based bar inside IE."

Could you elaborate on this? Is there a way to inherit the rendering mode of the "system" so the style always matches IE?

We mean that it is possible to subclass the IE rebar band window which looks like a toolbar with the current windows style. After subclassing this bar and its content, it will have a solid look of any theme supported in Prof-UIS. But, as a result, you will get an IE toolbar with the style different to all other IE toolbars.

Could you give me a simple class declaration of what you mean?

Are you saying that I should not use the CExtToolControlBar? that I cant make it look like a standard ie toolbar? Sorry for being so thick...

We did the trick and now the background of your IE toolbar is drawn correctly. Please declare a CExtToolControlBar-derived class (e.g. CKBToolbarWnd) and override the DoEraseBk() virtual method in this way (the full source code can be downloaded from here):

void CKBToolbarWnd::DoEraseBk( CDC * pDC )
{
 ASSERT( pDC->GetSafeHdc() != NULL );
 
CRect rcClient;
 GetClientRect( &rcClient );
 
 if( ::IsRectEmpty( &rcClient )
  || ( ! pDC->RectVisible( &rcClient ) )
  )
  return;
 
CWnd * pWndParent = GetParent();
 ASSERT( pWndParent != NULL );
 ASSERT_VALID( pWndParent );
 
CRect rcParentWnd;
 pWndParent->GetWindowRect( &rcParentWnd );
 ScreenToClient( &rcParentWnd );
 
bool bDefaultDrawing = true;
 if(  g_PaintManager.m_UxTheme.IsAppThemed()
  && g_PaintManager.m_UxTheme.IsThemeActive()
  && g_PaintManager.m_UxTheme.OpenThemeData(
    GetSafeHwnd(),
    L"REBAR"
    ) != NULL
  )
 {
  INT nPartID = 0;
  INT nStateID = 0;
  if( g_PaintManager.m_UxTheme.DrawThemeBackground(
    pDC->GetSafeHdc(), 
    nPartID, 
    nStateID, 
    &rcParentWnd, 
    &rcClient
    ) == S_OK
   )
   bDefaultDrawing = false;
  g_PaintManager.m_UxTheme.CloseThemeData( true );
 }
 
 if( bDefaultDrawing )
  pDC->FillSolidRect(
   &rcClient,
   ::GetSysColor( COLOR_3DFACE )
   );
}

Fantastic!!! Works like a charm, Thanks