Starting with Symbian Anna/Symbian ^3 SDK (AFAICS), CGraphicsContext::EDrawModeNOTSCREEN has changed.
Before (since EPOC, in fact), this call could be used to invert a rectangle on the screen by drawing that rectangle inverted. But starting with Anna or Symbian ^3 this has changed, now just a white rectangle is being drawn. I cannot find any mention of this at all in the docs, and the docs are in fact saying that this is still how it is supposed to be working.
Can anybody shed some light on this issue?