For web-applications I'm used to using WCAG 2.0 as a specification to provide to developers and 3rd parties who are developing websites to use as a guide.
I now have a 3rd party supplying a Windows application. My belief is that the principles and guidelines of WCAG apply equally well to desktop applications. However having 'Web' in the name of the standards is proving a bit of a stumbling block.
Are there any equivalent standards, or alternately uses of WCAG that I could use as a non-web accessibility specification?
On key thing to highlight, this is a package solution from a 3rd party, which I'd like them to assess against a guideline for level of compliance.