[brailleblaster] Re: The VerifyKeyListener
- From: Michael Whapples <mwhapples@xxxxxxx>
- To: brailleblaster@xxxxxxxxxxxxx
- Date: Sat, 11 Jun 2011 22:33:14 +0100
Hello,
May be I have lost where we are going here, but a question which may
need to be asked is, what determines if the "document" has changed? Is
it as simple as only key presses in the styled text controls may change
the document? Is there any other way the document may be modified? Can
the view provide sufficient information of whether the document has
changed? Just because a document looks the same, does that mean the
actual document itself is the same?
Michael Whapples
On 06/11/11 16:51, Susan Jolly wrote:
The StyledText widget has a lot of OS-dependent default key bindings
which you can discover either from its getKeyBinding() method or by
looking at the source code. You can overwrite the defaults and/or set
additional bindings with the widget's setKeyBinding() method. You can
listen directly for SWT.Key_Down events rather than
usingVerifyKeyListener. . Here is a bit of code from the TextEditor
example.
styledText.addListener(SWT.KeyDown, new Listener() {
public void handleEvent(Event event) {
handleKeyDown(event);
}
Then in your handleKeyDown() method you can use event.keyCode to
determine which key was pressed.
Susan
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