[PD-dev] PD canvas interaction - flext GUI

[Thomas Grill]

am 16.10.2002 15:21 Uhr schrieb Krzysztof Czaja unter czaja at chopin.edu.pl:

> hi Thomas,
> 
> Thomas Grill wrote:
> ...
>> I don't know if there is a way to get the TCL/TK mouse state by polling,
>> there seem to be just mouse events... but that's not too bad - one can cache
>> the info.
> 
> actually I need only mouse _position_ polling (or, strictly
> speaking, sampling), which is available by calling winfo pointerxy.

Hmmm, i don't understand the advantage of polling compared to position
events. If you want to poll from TCL/TK you would have to trigger a TK
function and get the values via a bound message (but you know that).
So using the mouse events, cache the position and do the polling (if
necessary) internally seems more convenient to me.

> and what
> I do not know, is how to plug my object into the original flow of
> events destined for a canvas (or, rather, all canvases)...
> Any idea?

I guess in that case you would have to modify the event handlers in PD.TK,
which is not very elegant.

best regards,
Thomas