[REBOL] Re: Event datatype
From: cyphre:seznam:cz at: 29-Aug-2002 11:58
Hi guys,
Yes, I was experimenting with possibilities of event! datatype.
Unfortunately, the event! datatype is a bit hardcoded,we could make its own
events but we cannot modify them(or at least I havent found any way how to
do it). The events have "invisible" behaviour ;-) for example see this
console session:
>> my-event: make event! []
>> probe my-event
>> events: copy []
== []
>> insert events my-event
== []
>> probe events
[]
== []
>> length? events
== 1
>> type? events/1
== event!
>>
but the event looks inside ok:
>> my-event: make event! []
>> my-event/1 ;which means event/type
== down
>> my-event/2 ;which means event/key
== none
>> my-event/3 ;which means event/offset
== 0x0
>> my-event/4 ;which means event/time
== 0
>> my-event/5 ;which means event/shift
== false
>> my-event/6 ;which means event/control
== false
>> my-event/7 ;which means event/face
== none
>> my-event/8 ;which means event/double-click
== false
unfortunately, when trying modify my custom event:
>> my-event: make event! [type: up key: #"k" offset: 10x10 time: 12345
shift: false control: false face: none double-click: false]
>> my-event/1
== down
>> my-event/2
== none
>> my-event/3
== 0x0
>> my-event/4
== 0
>> my-event/5
== false
>> my-event/6
== false
>> my-event/7
== none
>> my-event/8
== false
>>
or even:
>> my-event/1
== down
>> my-event/1: 'up
** Script Error: Invalid path value: 1
** Near: my-event/1: 'up
>>
The only thing we can do with events is to catch them and replay them. See
my example script here: http://www.rebol.cz/~cyphre/event-recorder.r
This is really great feature! What do you think? But there is one drawback.
Since the events are "invisible" we cannot store them or stream over TCP
etc. What a pity. Could you imagine the possibilities? GUI apps with remote
control!
I hope RT enhance event! datatype for wider usage from the rebol developer
side.
If you know/find something more about event! datatype dont hesitate to share
it on the list!
best regards,
Cyphre
