How to get Dock size?

Question

Created Feb ’24

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Is there any way to get dock size?
I got Dock Window using CGWindowListCopyWindowInfo. But I found its frame covers my entire screen.
Same promble as Notification Center.

CleanShot 2024-02-23 at 01.01.45@2x.png

Any way to get their size?

Answered by Frameworks Engineer in 780809022

Hi Hylas,

The main way you can learn about Dock geometry is via the -[NSScreen visibleFrame] property. That property returns a rect in screen coordinates which excludes the menu bar and Dock (along whichever edge it's configured) if visible. You can derive the inset created by the Dock by diffing this rectangle against the regular -frame property. Note that if there are multiple screens, the Dock will appear on only one of them.

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Frameworks Engineer OP

Apple

Feb ’24

Accepted Answer

Hi Hylas,

The main way you can learn about Dock geometry is via the -[NSScreen visibleFrame] property. That property returns a rect in screen coordinates which excludes the menu bar and Dock (along whichever edge it's configured) if visible. You can derive the inset created by the Dock by diffing this rectangle against the regular -frame property. Note that if there are multiple screens, the Dock will appear on only one of them.

1