Hello,guys I am trying to write a app in which I have to recognize user drawing just like these three here, so can you tell me how to do it under C#.




And I have one offtopic problem , so I hope you will answer it too.
I have a user control which is then initializen in winform , but I created a new winform I need to know when a user control checkbox == true , but when I try to get it , it's always false . I tryed even with public property but again without result.

Thanks in advance to everyone who will answer to my questions.