3 Replies
      Latest reply on Dec 6, 2019 11:19 AM by dzed
      pellisuk.pro Level 1 Level 1 (0 points)

        Since upgrading to Catalina (10.15) we are finding that the callback set by

         

        "IOHIDDeviceRegisterRemovalCallback(inIOHIDDeviceRef, DeviceRemoved, this); "

         

        is not being called when the USB HID device is removed. The same build of software works on 10.14 and older (I've tested back to Yosemite). The above call is made in the callback set by IOHIDManagerRegisterDeviceMatchingCallback, so some callbacks are still working.

         

        Has anyone else seen this?