Hi!

I was looking why alt and ctrl keys behave the same in unix, jeje, so I looked at the vm and everything seemed to be alright, but in the image I always had Cmd+a key when doing alt+akey :S.� And this is pretty annoying since it limits the ammount of shortcuts I can work with, and I also make things work different than the rest of the OS.

So, searching I found a KeyDecodeTable in InputEventSensor, which was built with this method:

installDuplicateKeyEntryFor: c
�� | key |
�� key := c asInteger.
�� "first do control->alt key"
�� KeyDecodeTable at: { key bitAnd: 16r9F . 2 } put: { key . 8 }.
�� "then alt->alt key"
�� KeyDecodeTable at: { key . 8 } put: { key . 8 }

So, every character keypress that had a 2 as a modifier (a control)� is converted as a command in here:

processEvent: evt
�� "Process a single event. This method is run at high priority."
�� | type |
��
�� type := evt at: 1.

�� "Treat menu events first"
�� type = EventTypeMenu
�� ifTrue: [
�� self processMenuEvent: evt.
�� ^nil].

�� "Tackle mouse events first"
�� type = EventTypeMouse
�� ifTrue: [
�� "Transmogrify the button state according to the platform's button map definition"
�� evt at: 5 put: (ButtonDecodeTable at: (evt at: 5) + 1).
�� "Map the mouse buttons depending on modifiers"
�� evt at: 5 put: (self mapButtons: (evt at: 5) modifiers: (evt at: 6)).

�� "Update state for polling calls"
�� mousePosition := (evt at: 3) @ (evt at: 4).
�� modifiers := evt at: 6.
�� mouseButtons := evt at: 5.

�� ^evt].
��
��
�� "Finally keyboard"
�� type = EventTypeKeyboard
�� ifTrue: [
�� "Sswap ctrl/alt keys if neeeded"
�� KeyDecodeTable
�� at: {evt at: 3. evt at: 5}
�� ifPresent: [:a |
�� evt
�� at: 3 put: a first;
�� at: 5 put: a second].

�� "Update state for polling calls"
�� modifiers := evt at: 5.
�� ^evt].
��
�� "Handle all events other than Keyborad or Mouse."
�� ^evt.
��

Now, I think this hack is there to allow the same behavior cross platform, but it is very ugly :(� And bring a lot of UI limitations to the people who only have alt and ctrl and no Cmd button :P...� Ok, removing this ugly code made my shortcuts work now with only with alt (cmd to the vm) and not with control, hehe, but I think that to fix things we have to clean them first :).

Does anyone know the reason of the existance of this table (besides cross platform hacking)?� Is this really useful?� Can it be removed?� Do I open a ticket?

Guille