Some time ago I already asked this question
(see "question on TCanvas::HandleInput" in roottalk digest, sorry for
repeating it again:
is it intentional that TCanvas::HandleInput doesn't have a default for
an X/Win event? Right now if an event is different from a small number
of events generated by mouse (press-left-button, move mouse, release-left-button
etc) TCanvas::HandleInput just returns. For example it is not possible to
process a keyboard X-event in MyObject::ExecuteEvent() simply because it
never gets there...
It might make sense to have a default processing of X/Win event which would
just pass this event to the picked object ExecuteEvent method. Then it would
be a selected object (and not a canvas itself!) which decides whether or not
this event has to be processed. The modification would look like this:
TCanvas::HandleInput(..) {
.. snip
case kButton1Down:
... snip
default:
fSelectedPad = 0;
pickobj = 0;
pad = Pick(px, py, pickobj);
if (!pad) return;
fSelectedPad = pad;
gPad = pad;
fSelected = pickobj;
if (fSelected) {
fSelected->ExecuteEvent(event, px, py);
}
}
..snip
}
This feature is extremely useful for different shorthands and Working on event
display prototype I'm really missing it.
Regards, Pasha.
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