Methods to count the number of monitors and basic info about each?

Question

Does OS X have any methods such as:

• [monitors.count] that return the number of monitors
• [monitor.height] that returns the number of pixels for the height of one monitor
• [monitor.aspectratio] that returns the aspect ratio of one monitor

(The above aren't actually methods, but that would potentially be what they would look like)

Answer 1

Check out the NSScreen class reference.

//Number of monitors
[[NSScreen screens] count];

// Height of screen '0'
[[[NSScreen screens] objectAtIndex:0] frame].size.height;