Making an image draggable

[Douglas Gilliland]

Thanks to all - it's great to have this as a resource for learning transcript.
The following script works great. 
on mouseDown
 grab me
end mouseDown
I will also try the others just to learn more about Revolution.
Thanks again.
Doug Gilliland
Sarasota, Fl
dodging the bullet with hurricane Dennis :>)

On 7/9/05, Derek Bump <webmaster at dreamscapesoftware.com> wrote:
> Douglas Gilliland wrote:
> > I know it must be easy but I cannot figure out the script to make an
> > image of a metric ruler draggable so my students can drag it around
> > the screen to measure items in a quiz stack I am writing.
> 
> You could try the following...
> 
> 1.  Create a separate stack.
> 2.  Place the "ruler.jpg" image on the stack.
> 3.  Resize the stack so it is the same dimensions as the image.
> 4.  Set the windowDecorations to empty
> 5.  Add the following to the stack's script...
> 
> local sgDragging
> local sgOffset
> 
> on mouseDown
>    put true into sgDragging
>    put the mouseLoc into sgOffset
> end mouseDown
> 
> on mouseMove
>    if sgDragging then
>      set the topLeft of this stack to \
>      item 1 of the screenMouseLoc - item 1 of sgOffset, \
>      item 2 of the screenMouseLoc - item 2 of sgOffset
>    end if
> end mouseMove
> 
> on mouseUp
>    put false into sgDragging
> end mouseUp
> 
> on mouseRelease
>    put false into sgDragging
> end mouseRelease
> 
> 
> Derek Bump
> Dreamscape Software
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