Why cant i click on the origin while i'am sketching ?

As you know, you need to define the sketch on the basis of origin and after that the color of sketch changes to black. It means completely defined. But now when I draw one sketch from the origin, the origin has not been appeared and the color of it will be constant even doing smart dimension and drawing in the origin. I would be glad if you help me.

Regards,

Khosrow

SolidworksGeneral