Open Radar

 
Summary:
The CoreGraphics Swift interfaces do not contain a definition for kCGNullWindowID, though the documentation mentions it numerous times.

Steps to Reproduce:
Attempt to use the following code snippet:

        let windowList: NSArray! = CGWindowListCopyWindowInfo(CGWindowListOption.OptionOnScreenOnly, kCGNullWindowID)

Build in Xcode (tested using Version 7.0 beta (7A121l)).

Please see attached Xcode project which demonstrates the issue.

Expected Results:
There are two possible expectations:
- kCGNullWindowID should be defined, since the documentation mentions it several times. When defined, compilation of the mentioned line should succeed.
- A proper value for Swift should be defined, and the documentation should be updated to reflect this definition, instead of calling out kCGNullWindowID.

Actual Results:
The swift compiler emits the following error when building: main.swift:12:101: error: use of unresolved identifier 'kCGNullWindowID'

Regression:
Describe circumstances where the problem occurs or does not occur, such as software versions and/or hardware configurations.

Notes:
Using 0 in place of kCGNullWindowID seems to be a suitable workaround (since that’s how it was #defined in the C headers). However, that value isn’t properly documented. A proper value should be described in the documentation.