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13 lines
464 B
Swift
13 lines
464 B
Swift
import AppKit
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extension NSWindow {
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/// Get the CGWindowID type for the window (used for low level CoreGraphics APIs).
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var cgWindowId: CGWindowID? {
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// "If the window doesn’t have a window device, the value of this
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// property is equal to or less than 0." - Docs. In practice I've
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// found this is true if a window is not visible.
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guard windowNumber > 0 else { return nil }
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return CGWindowID(windowNumber)
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}
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}
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