Office 2007 theme + animation + draw problem

I've found the problem here, it was in my custom slider control for the command bars causing extra invalidates.

void CXTPSliderCtrlToolbar::OnPaint(void)
{
    const MSG *msg = GetCurrentMessage();
    if( msg->wParam ) {
        CDC *pDC = CDC::FromHandle((HDC)msg->wParam);
        CRect rect;
        GetClientRect(&rect);

        CTransMemDC memDC(pDC, rect, SLIDER_COLORKEY);

        DefWindowProc(WM_PAINT, (WPARAM)memDC.m_hDC, 0);

        if( GetFocus() == this ) {
            CXTPPaintManager *pPaintMgr = static_cast<CXTPMDIFrameWnd *>(AfxGetMainWnd())->GetCommandBars()->GetPaintManager();
            memDC.Draw3dRect(&rect, pPaintMgr->GetXtremeColor(COLOR_BTNSHADOW), pPaintMgr->GetXtremeColor(COLOR_BTNHIGHLIGHT));
        } else if( (GetStyle() & WS_DISABLED) && m_bkColorKey != 0 ) {
            for( int y = rect.top; y < rect.bottom; y++ ) {
                for( int x = rect.left; x < rect.right; x++ ) {
                    if( (x & 1) == (y & 1) ) {
                        memDC.SetPixel(x, y, m_bkColorKey);
                    }
                }
            }
        }
    } else {
        CPaintDC dc(this);
//        GetParent()->RedrawWindow(NULL, NULL, RDW_INVALIDATE | RDW_UPDATENOW);
        if( pControl ) pControl->RedrawParent(FALSE);
    }
}


Instead of calling RedrawWindow, I had to capture the CXTPControlCustom pointer and call it's RedrawParent().

Now there is still another problem -- Office 2007 theme does NOT call WM_CTLCOLORSTATIC when drawing the slider bars, so the background is a solid blue color and not what SLIDER_COLORKEY needs for my transparent DC to work.

How can I make my custom slider control use transparent background with Office 2007 theme? It worked great with Office 2003 theme before.

Unfortunately, no, your CXTPControlSlider() will not work - I need access to SetTickFreq() as well as removing TBS_BOTH and increasing the height to 30px. Also, CXTPControlSlider() looks to be drawn in XP style even using Office 2007 Ribbon skin:


The class I've been using since 9.81 and before works fine still, and is even drawn in the correct Office 2007 style:


If I manually set my key color to RGB(191, 219, 255) to match that background color, it is drawn correctly too:


However, that would NOT draw correctly on other systems or themes with the hard-coded key color. I really need it to somehow obey WM_CTLCOLORSTATIC like it still does if I use Office 2003 theme.