Hi Bo,

I realised myself that drawing directly on the form is unmanageable.

If I understood idea, ImageCanvas is sort of bound to the underlying memory bitmap simillar to ordinary form textbox being bound to a variable or a field and then all refreshing is done automatically.

What is the idea with that ClientWindow ?

By now I found my perfect scenario with ImageCanvas placed within scrollableContainer by CarlosA/MalcolmG.
Don't tell me that I will have to rewrite my stuff again because this one will be like 10 times faster :0)

VFPX rocks :)