Oli wrote:However, if I set Pointer.Brush.Color=Transparent all pointers become invisible (or transparent). Is Pointer.Pen.Color also set to transparent? Is it a bug or expected behavior?
Yes, when Pointer.Brush.Color=Transparent, the Pen.Color is also set to Transparent. If you want the pen to be drawn, but the interior of the pointer, you could use transparency:
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point1.Pointer.Transparency = 100; // or 50 or whatever you want
Oli wrote:Secondly , if I set Pointer.Brush.Color=White then certain pointer styles (cross, diagcross, star) becomes invisible too (on white background). It would make sense if I set their Pointer.Pen.Color= White. Actually , Pointer.Brush.Color=White does not make sense for those pointer style (nothing to fill).
Star, SmallDot, Cross and DiagCross PointerStyles use the series' Color as Pen.Color in this case because, as you say, otherwise has no sense for them.