Re: Drawing area feature?

[CALMELS Clement <calmels_clement stna dgac fr>]

Yes It's exactly what I want. But even if the gnomecanvas is the best
widget for my purpose, I will probably had to only use Gtk.
You said "traverse your list of objects to see which one was clicked".
There is no way to do this with a smart trick? With a "mask color" for
example? Or something else... any idea?

James Eagan wrote:
> On Wed, Apr 18, 2001 at 05:43:39PM +0200, CALMELS Clement wrote:
>
> > I want to select an element of a drawing area (rectangle, arc...). How I
> > could do that?
>
> Am I correctly interpreting your question as: you want to be able to draw
> objects to the drawing area (i.e. rectangles, circles, whatever), and be able
> to later grab that object and manipulate it in some fashion (i.e. user clicks
> in rectangle, so border changes colour)?
>
> There are a couple of ways to do this:  if you don't mind using the
> gnome-libs, you might want to check out the gnomecanvas.  It behaves in this
> manner "for free."  Otherwise, you'll probably have to do the bookkeeping
> yourself: have some rectangle object.  When you get a click event, traverse
> your list of objects to see which one was clicked.  Redraw with the
> appropriate changes made to the desired object.
>
> James
>
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