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  1. Qt
  2. QTBUG-60465

MouseArea stops working after OS steals release event

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: P1: Critical P1: Critical
    • 5.9.4
    • 5.8.0
    • Quick: Mouse Touch and Tablet input
    • None
    • iPad 2 (MC769BZ/A), running iOS 7.1 (11D167),
      iPad Air (A1474), running iOS 10.3
    • dd2657e30a42c269f47195d61a9fe8a5fff02912

      Using a QtQuick MouseArea on iOS, whenever the user presses the area (touch down) and the release (touch up) happens in a system context (if we press home on iOS or recent apps on Android, for instance) mouse area is stuck in pressed state forever, and stops responding to any touch events.

      I recorded this bug on a small 20s video, attached to this bug report.
      Also attached is the code I used for the test.

      What seems to happen is that, whenever MouseArea detects a pressed event (or touch down), it waits for the corresponding release event, but as we go out of the app context when doing a gesture on iOS, the release event is never received by mouseArea, and it remains forever waiting for the release event, in pressed state.

        1. MouseareaTest.mp4
          5.76 MB
        2. TestRect.qml
          2 kB
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            srutledg Shawn Rutledge
            lmreffatti Luiggi Reffatti
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              Created:
              Updated:
              Resolved:

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