Thanks Uwe for quick response(I appreciate this)... I am using Qwtplotcurve so I would see if its feasible for me to overload drawsymbols() function.

One more Question I have labels of the plot points in a Qtableview and I am looking to link them. Linking means whenever I select a label in Qtableview that point in the plot highlighted.is there a way I can do it.

Cheers,