Nice nice nice nice nice!!!!!!!!!!!! Grrr I thought you have stolen my idea like so close you have made Game Editor in MonoGame without User Interface. Nice Job!
Thanks for explanation - I remember it is very easy solution from youtube
I know that.
I will continue first _currentMouse Pressed than _oldStateMouse.Released = It looks like real clickable button. Wow!
Now I will work hard until I have with TextureAtlas