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OnDraw for views, instead of OnPaint for dialogs. The OnDraw function gives you the drawing DC as a parameter of the function, so my question stands, why the GetDC ().


Yes. A window (or view)...

Why do you need to get a DC ? You can only draw in the OnPaint, and in it you need to declare

CPaintDC dc(this);
to create a DC. Drawing outside the OnPaint is simply the wrong way to do it.