void CXTPTaskPanelGroup::SetClientBitmap(UINT nID, COLORREF clrTransparent, int nBackgroundAlignemnt)
{
	UINT nIDCommands = {nID};
	CXTPImageManager* pImageManager = m_pPanel->GetImageManager();

	COLORREF clrOldMask = pImageManager->SetMaskColor(clrTransparent);
	pImageManager->SetIcons(nID, &nIDCommands, 1, CSize(0, 0), xtpImageNormal);
	pImageManager->SetMaskColor(clrOldMask);

	m_nBackgroundImage = nID;
	m_nBackgroundAlignemnt = nBackgroundAlignemnt;

}