[Squeakland] 2 questions - embedding text box and keystroke listener

Ned Konz ned at squeakland.org
Mon Dec 13 18:39:24 PST 2004

On Sunday 12 December 2004 7:55 am, Alan Kay wrote:

> Perhaps Scott or Ned can tell us about the current state of keyboard
> listening in the etoy system (the feature is there but turned off, again
> for good reasons).

Actually, it's broken right now. I have sent Michael a fix.

There are two parts:

* The World has a String-valued property called 'lastKeystroke'. This is a 
string that holds the keystroke, in a form that can be used in string 
comparisons, like:


This works OK now; you can have a ticking script (for instance) testing the 
lastKeystroke property. But you may very well miss one, unless you use the 
other part:

* You can trigger a script that is owned by the World on a 'keyStroke' event.
You do this by clicking on the 'when this script should run' button, and 
choosing 'more' and then 'keyStroke'. This is the part that is currently 

The attached change set fixes this problem, if you want to experiment with it 
and know what to do with change sets. Otherwise, you will have to wait for 
the fix to appear as a Squeakland update.

Anyway, with these two features you can do something like the script pictured 
in the attached image, which moves a Rectangle around by keyboard command.

Ned Konz
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'From Squeakland 3.8.5976 of 25 August 2004 [latest update: #371] on 13 December 2004 at 6:25:18 pm'!
"Change Set:		EnableKeystrokeEvent-nk
Date:			13 December 2004
Author:			Ned Konz

CS 0359keyboardEvents-nk did not register the keystroke event trigger properly (or rather, 0367specificEvents-nk didn't change PasteUpMorph>>initialize as it should).

This change set restores the 'keyStroke' event for PasteUpMorphs including the World.


!PasteUpMorph class methodsFor: 'class initialization' stamp: 'nk 12/13/2004 18:22'!
	"Initialize the class"

	self registerInFlapsRegistry.	
	ScriptingSystem addCustomEventFor: self named: #keyStroke help: 'when a keystroke happens and nobody heard it' targetMorphClass: PasteUpMorph.! !

PasteUpMorph initialize!
Now make sure that PasteUpMorph is properly registered."

PasteUpMorph initialize.

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