The appearance of hosted WinForms/Win32 content should not be affected by WPF. There is an "airspace" limitation that dictates that a single window pixel can only be owned by a single graphics API, and it can only be drawn by that API. Hence, WinForms content is drawn by WinForms/GDI+, even when hosted by WPF. This explains why hosted content will be drawn on top of any WPF content in the same window, even if the WPF content is positioned in front of it.
Changing WPF rendering properties like TextFormattingMode
cannot affect the appearance of interop content. You should be looking at the layout/rendering properties of the hosted WinForms content.
Update
Presumably the fuzzy effect is do to WPF defaulting to grayscale AA for the DataGridView
. In the Paint
and/or CellPainting
events of the DataGridView
, setting the graphics text hint to cleartype:
e.Graphics.TextRenderingHint = Drawing.Text.TextRenderingHint.ClearTypeGridFit
eliminated most of the fuzziness.