David Mathew asked:
> Are there any good conventions for displaying a "partially selected
checkbox"? 

Check boxes with mixed-value state have been around a long time, dating
back to GUI's in the 80's. The most common representation I've seen is
gray fill of the entire check box - usually dithered (probably because
that was the state of the art for gray in the earliest incarnations).
See Check boxes, Figure 6.12 in the Gnome Usability Project's Human
Interface Guidelines for one example
(http://developer.gnome.org/projects/gup/hig/hig-diff/controls-check-box
es.html).

MS Office 2007 uses green fill - same idea, different styling.

Displaying a gray check mark is a poor solution for reasons stated in
Adam's posting.

Paul Eisen
Principal User Experience Architect
tandemseven

416.840.4447 office/mobile
[EMAIL PROTECTED]
http://www.tandemseven.com

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