Not certain about type of your graphic LCD but I solved the problem
lately by using the second memory.
If your LCD display has enough memory for two screens like mine, you
could write to the second part and after finishing writing easily change
the offset.

Regards

Igor

Thomas wrote :

> It is a little more complicated.  Let's say I have
> these codes:
>  data = 12345;
>  printf("%d",data);  // LCD scr displays "12345"
>  data = 9;
>  printf("%d",data);  // LCD scr displays: "92345"

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