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Bug 340711

Summary:	[key binding] Key binding doesn't work correctly for Meta/Win key.
Product:	[Eclipse Project] Platform	Reporter:	Brian Davis <brian.davis>
Component:	SWT	Assignee:	Platform-SWT-Inbox <platform-swt-inbox>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	minor
Priority:	P3	CC:	arunkumar.thondapu, daniel_megert, eclipse.felipe, ericwill, philipa, prakash, pwebster
Version:	4.1	Keywords:	triaged
Target Milestone:	---
Hardware:	PC
OS:	Linux
Whiteboard:	stalebug

Description Brian Davis

2011-03-22 18:23:24 EDT

Build Identifier: 20100917-0705

Running Ubuntu 10.04 on an x86_64 platform.

I'm normally an Emacs user and have a keyboard with a separate Meta key (Happy Hacking keyboard, with layout very similar to the old Sun keyboard). Attempting to map the "Word Completion" command to "Meta+/" (AKA "Alt+/") does not work in the Preferences dialog. When I select the "Word Completion" row of the binding table and then click in the "Binding:" text box, it displays the string "Alt+" while I hold down the Meta key, but erases that string and replaces it with '/' when I press the '/' key.

I have the keyboard and OS configured to generate the Win key keycode for the Meta key, so this should probably be reproducible on keyboards that don't have an explicit Meta key.

Reproducible: Always

Steps to Reproduce:
1. Set Ubuntu key mapping behavior to map the Meta key to the Win key scan code (System->Preferences->Keyboard to bring up the "Keyboard Preferences" dialog, select the Layouts tab, press the "Options..." button, select the "Meta is mapped to Win keys" radio button under the "Alt/Win key behavior" drop-down.

2. Open the Preferences dialog in Eclipse Editor (Window->Preferences).

3. Expand the "General" item on the left side tree control.

4. Select the "Keys" item.

5. Scroll the binding table down until the row for the "Word Completion" command is visible (it's near the bottom) and select it.

6. Click in the "Binding:" text box to change the binding.

7. Hold down the Meta/Win key, the text box should display "Alt+" after this is done (indicating that the program is somehow reading the key press event as an Alt key press).

8. Press the '/' key, the text box should change from "Alt+" to '/'.

Comment 1 Prakash Rangaraj

2011-03-23 01:36:20 EDT

Sounds like an SWT bug. Moving to SWT.

Comment 2 Felipe Heidrich

2011-03-24 10:45:22 EDT

I don't think SWT has a constant for the meta key,
Please run org.eclipse.swt.snippets.Snippet25.java and press the win key, does it print anything to the console ?

Comment 3 Brian Davis

2011-03-24 13:12:24 EDT

I downloaded org.eclipse.swt.snippets from the Eclipse CVS repository at dev.eclipse.org and ran Snippet25.  Here is what it prints on the console:

DOWN: stateMask=0x0, keyCode=0x10000 ALT, character=0x0 '\0'
UP  : stateMask=0x0, keyCode=0x10000 ALT, character=0x0 '\0'

Comment 4 Dani Megert

2012-09-18 03:20:03 EDT

*** Bug 389664 has been marked as a duplicate of this bug. ***

Comment 5 Eclipse Genie

2020-07-12 12:25:03 EDT

This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. As such, we're closing this bug.

If you have further information on the current state of the bug, please add it and reopen this bug. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant.

--
The automated Eclipse Genie.