GDI Drawing of Controls
C / C++ / MFC
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I have written a custom control derived from CWnd. Basically I am not drawing the entire client rectangle. I do not want to obscure things behind the control. Now I have added the ability to click and drag a "thumb" piece on this control. Works great, except for the drawing. What I am seeing is the control is not erasing the rectangle and I start getting "smearing" Is there an easy way to grab an XOR map on this? I'm kinda new to MFC and am feeling my way through this. Little help? -JT