This is not only wasteful, but creating a Direct2D surface associated with a wxDC makes it impossible to paint on the DC using GDI functions, so this completely broke the initial display in the sample. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77690 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775