(imported comment written by jgstew)
This is what I was talking about for an easier method to get the screen resolution of the primary monitor:
q: (metric 0 /* SM_CXSCREEN */ of operating system)
A: 1920
T: 0.049 ms
I: singular integer
q: (metric 1 /* SM_CYSCREEN */ of operating system)
A: 1200
T: 0.054 ms
I: singular integer
See this analysis for similar options:
http://bigfix.me/analysis/details/2994628
See this website for the full list of options for the metric inspector:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms724385(v=vs.85).aspx
Relevance inspector reference:
http://support.bigfix.com/inspectors/System%20Objects_Win.html#operating%20system