kAsciiFocus
SetFocus(fFocus == kHexFocus ? kAsciiFocus : kHexFocus);
focus = kAsciiFocus;
if (which == kAsciiFocus)
DrawSelectionFrame(fFocus == kHexFocus ? kAsciiFocus : kHexFocus);
DrawSelectionFrame(kAsciiFocus);
rect = SelectionFrame(fFocus == kHexFocus ? kAsciiFocus : kHexFocus, start, end);