[Newbies] Detecting keyboard state / finding older fixes
bert at freudenbergs.de
Tue Mar 4 21:01:43 UTC 2008
On Mar 4, 2008, at 19:19 , stan shepherd wrote:
> handleKeyUp: anEvent
> Transcript show: ' evt is down ',anEvent isKeyDown asString; cr.
> "now press and hold a key"
> evt is down false
Which is of course expected since only keyUp events are passed into
#handleKeyUp:, so #isKeyDown always is false.
You need to handle both keyDown and keyUp events, and track the state
of pressed keys.
Note that the keyValue in up/down events is system-specific (unlike
keyStroke events which have actual characters).
Also note that this behavior also depends on your OS and VM version.
The Windows VM handles up/down events nicely for a long time, Mac VMs
since recently, Unix VMs are broken I think.
I'm attaching a small example morph demonstrating this.
- Bert -
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