I'm struggling to use pointers properly with Kotlin/native in ObjC interop. I found a SO post with ...

# kotlin-native

[spierce7]

I'm struggling to use pointers properly with Kotlin/native in ObjC interop.

I found a SO post with clear ObjC / Swift instructions to use an API, and I'm struggling to replicate in Kotlin: https://stackoverflow.com/a/48030215/471744

val windowInfoList = CGWindowListCopyWindowInfo(kCGWindowListOptionAll, kCGNullWindowID)!!

windowInfoList is of type CFArrayRef, and no matter what I do I can't figure out how to use it / get at the items in the array. Any help would be appreciated. Here is the documentation for the function: https://developer.apple.com/documentation/coregraphics/1455137-cgwindowlistcopywindowinfo

[AnaR]

Had similar issue with toll-free bridging: https://github.com/JetBrains/kotlin-native/issues/1737 I worked around it. I'd like to know how to bridge a CF type to NS type too.

[AnaR]

Also found https://developer.apple.com/documentation/corefoundation/1388767-cfarraygetvalueatindex?language=objc which may help with getting the values from CFArray

[spierce7]

Swift / ObjC seems to be able to get values out just fine. I'd assume Kotlin has a way to as well. Part of the problem is I'm a little out of my comfort zone working with pointers, and the other part is the documentation around interop isn't very helpful here.

[spierce7]

@olonho Why can Swift / ObjC interact with these components easily, but I'm forced to use the C API in Kotlin?