Widget detect drag left or right Mousebutton

Hi
After a I tried to solve the problem for an hour I hope that someone other might help me.
My problem is that I want to detect a drag when the left or right mouse button is pressed, I also want to know which mouse button has to be pressed because I don’t know the answer. I hope that you might help me, that would be really cool and you’d help me a lot. : )
By the way I’m very sorry for my spelling mistakes but I gave my best.

97798-detectdragproblem.png

This is what I was abel to do so far.

Because I asked the question again I will remark this as answer.

This is the link to the new Question