Mac Catalyst: Horizontal Mouse scroll with click drag

Question

Preparing an iPad App for native MacOS experience using Mac Catalyst (and AppKit when needed) and using SwiftUI.

We observe that Horizontal Scroll is tricky using a Mouse! Most users have the habit of click+drag to scroll horizontally. This does not seem to be default behavior on ScrollView.

Strange: Same App when compiled on "Mac (Designed for iPad)" [aka Silicon only] scrolls horizontally with click drag. But not if compiled with Mac Catalyst.

Question: How can we enable general click-drag for horizontal scrolling using SwiftUI on Mac Catalyst? I wouldn't mind using specific AppKit framework if needed. Thanks in advance.

Arshia · Accepted Answer · 2024-03-04 17:14:40Z

0

For anyone coming across this:

Adding UIApplicationSupportsIndirectInputEvents as YES to the App's plist will enable the default behavior.

Apple Documentation: https://developer.apple.com/documentation/bundleresources/information_property_list/uiapplicationsupportsindirectinputevents

answered Mar 4, 2024 at 17:14

Arshia

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3 Comments

SPM Over a year ago

YES is the default starting with iOS 17. Even with this, I'm still can't use the mouse for horizontal scroll. But as you said, it works for "Designed for iPad" targets.

Viktor Maric Over a year ago

have you found any solution?

Arshia Over a year ago

In my case the solution works even on iOS 17/MacOS 14;x (and MacOS 15.x)

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