GWKB1127 : Reviewing a Web Page With the Mouse Pointer While Using Mozilla Firefox Version 4 or Thunderbird version 5 and newer

Product: Window-Eyes
Author: Raul Gallegos
Date Added: 06/14/2011
Last Modified: 02/19/2013

Symptom: When using Mozilla Firefox version 4 or Thunderbird version 5 or newer, reviewing web pages or emails using the mouse pointer is problematic.

Cause: Mozilla is using a new graphical technology in Firefox version 4 and newer which bypasses our offscreen model, (OSM). Since Window-Eyes depends on the OSM to allow the user to review the screen using the mouse pointer, things don't work the same as with older versions of Firefox and Thunderbird, (such as version 3.6 for the former and 3.1 for the latter).

Solution:

The following applies to Firefox version 4 or Thunderbird version 5 and newer.

 

  1. Launch Mozilla Firefox or Thunderbird.
  2. In Firefox, press Control-L to open a new link.In Thunderbird, select the Tools menu followed by Options. From there, choose the advanced listbox item, Tab to the categories tab control, and Left-Arrow to General.
  3. In Firefox, type "about:config" and press Enter.In Thunderbird, press Alt-C to open the configuration editor.
  4. If you are presented with a dialog which warns you about the dangers of making changes, Tab to the "I'll be careful, I promise!" button and press Enter.
  5. At this point you should be out of Browse mode and on a filter Edit Box. If not, turn off Browse mode by pressing Control-Shift-A.
  6. In the filter Edit Box type "direct2d.disabled".
  7. Press Tab to get to the list of filtered entries and you should see one called "gfx.direct2d.disabled" with a default value of False.
  8. Press Enter to toggle this value to True.
  9. Press Shift-Tab to get back to the filter Edit Box and type "layers.acceleration.disabled".
  10. Press Tab to get to the list of filtered entries and you should see one called "layers.acceleration.disabled" with a default value of False.
  11. Press Enter to toggle this value to True.
  12. Press Control-W to close the configuration window.
  13. Restart Firefox or Thunderbird.

 

you should now be able to use the mouse pointer to review web pages while using Mozilla Firefox version 4 or emails with Thunderbird version 5 and newer.