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Associated article: Transparent ATL Controls

Tags: Web Development     .NET    

Published source code accompanying the article by Tom Armstrong and Mark Nelson in which they use Microsoft's Active Template Library to build an ActiveX control that displays a bitmap with a single transparent color. You can then use the control with Internet Explorer, Netscape Navigator, Visual Basic, and most other ActiveX containers. Also see TRANS.ZIP.

					Transparent ATL Controls 
by Tom Armstrong and Mark Nelson

Listing One
BOOL CTransCtrl::OnEraseBkgnd(CDC* pDC)
    CWnd*  pWndParent = GetParent();
    POINT  pt;
    pt.x = pt.y = 0;
    MapWindowPoints(pWndParent, &pt, 1);
    OffsetWindowOrgEx(pDC->m_hDC, pt.x, pt.y, &pt);
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