- Sets the current font for the DC. It must be a valid font, in
- particular you should not pass wxNullFont to this method.
+ Sets the current font for the DC.
+
+ If the argument is ::wxNullFont (or another invalid font; see wxFont::IsOk),
+ the current font is selected out of the device context (leaving wxDC without
+ any valid font), allowing the current font to be destroyed safely.