> Hi all - you know Microsoft Paint (or Paintbrush), well I don't want to
> rewrite this but I do want to write something similar. What I want is to
be
> able to draw a line or two, then move the cursor over this line, and
select
> the line and do something with it (ie change it's colour, it's thickness,
> it's size, position). In otherwords, I want to be able to build up a list
of
> the lines in a document where each line in the document has/may have
> different coordinates and other attributes. I want to be able to
> individually manipulate all the lines with some selection tool.

> What I've one so far is to create a main parent window with multiple child
> windows displayed on it (each child window contains the line I've drawn
with
> private member variables indicating line thickness, coordinates etc). The
> problem is that when what I've drawn contains 30 or 40 lines (30-40 child
> windows) the programme is very slow on a redraw, main window resize etc.

> I've designed my application poorly. Does anyone have any suggestions on
the
> approach I should adopt.
> Thanks