I'm still in bad trouble on this despite help from the mother ship, who pointed
out that when I started this thread, I was mixing the creation of paint
('image') and vector ('graphic') objects.
I corrected my mistakes, and built a mini-app that has drawing tools chosen in
a palette. The actual drawings are done on a card in the mainstack. All works.
Now I went back to my original app, made sure the tool palette there had been
updated, and sure enough in the IDE it all works - I'm able to make vector
graphics on a card in my mainstack and manipulate them (drag, resize, delete
etc) as expected.
So, armed with that knowledge, I rebuilt my standalone. To my surprise the
behaviour was as before (works in IDE, doesn't work in standalone).
A graphic tool (for example of style 'oval') in my app did not draw a graphic
but instead a small circle on my card whose size I could not influence! I
realise this is what you get when you select a drawing tool and just click
without dragging - so there was no response to my dragging. Trying a bit
harder, I modified and remade the app with another card from a different
substack visible to the user: amazingly, the tools in my palette work perfectly
on this card, but not on the original target card!!
I inserted logging messages in my original target card and I found that new
graphics are being created, but I can't resize or select them.
So, there is something strange about the card which I am trying to use for
drawing. What could it be? I have checked all the things I can think of,
including strange 'mouseDown' handlers in the message path (presumably such a
handler could wreck the drawing process), a cantSelect set to true (this
inhibits creation of graphics), but I haven't found anything yet.
The stack where the drawing is supposed to take place is definitely toplevel.
Can anyone say what can prevent dragging with a graphic drawing tool working on
a particular card in a toplevel stack, and why there should be a difference
between the IDE and a standalone?
TIA
Graham
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