Setting focus on Canvas

[munna]

how about viewportToContents() ?

[Kapil]

how about viewportToContents() ?

viewportToContent: "Translates a point (vx, vy) on the viewport() widget to a point (x, y) in the contents."

How does it help me... I don't know the point on the canvas to set focus to...
Its this way that i am shown a part of the canvas.. now when i zoom the canvas, the part of the canvas which i was viewing before should be the one which i am viewing just that it is zoomed....
i should be nearby the same coordinate set where i was earlier...
but right now it just gets lost...

thank you,

with regards,
Kapil