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  1. Qt
  2. QTBUG-113711

Windows: QInputDevice::devices() returns empty list

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Details

    • Bug
    • Resolution: Unresolved
    • P2: Important
    • None
    • 6.2.8, 6.5.0
    • GUI: Basic Input System (keyboard, mouse, touch)
    • None
    • Windows 10 22H2, MSVC 2019 or MinGW 11.2.0
    • Windows
    • 8d11e05f8 (dev), 62f83ac45 (6.5), ea4501366 (tqtc/lts-6.2)

    Description

      Add this line the main() function of any project:

      qDebug() << "Devices:" << QInputDevice::devices();

      This seems to produce correct information on macOS 13.3.1 and Ubuntu 22.04, but returns an empty list on Windows 10 22H2 (physical machine).

       

      Notes

      I do have the following devices plugged in, which are all recognized by Windows Device Manager:

      • A very basic wired USB keyboard
      • A Logitech wireless dongle, that is paired to one keyboard and one mouse

      Unplugging either one of the USB connectors and rerunning the app makes no difference.

      Attachments

        Issue Links

          is required for

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-101648 On Windows Touch device(Surface Pro) need to know if external keyboard is connected or not

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-101875 Properly register the input devices on Android

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-112432 wayland plugin should distinguish touchpads from mice, etc.

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-113706 WASM: QInputDevice::devices() erroneously reports that a touchscreen exists

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          For Gerrit Dashboard: QTBUG-113711
          # Subject Branch Project Status CR V
          479017,2 doc: Reduce expectations for QInputDevice::devices() dev qt/qtbase Status: MERGED +2 0
          479269,2 doc: Reduce expectations for QInputDevice::devices() 6.5 qt/qtbase Status: MERGED +2 0
          479271,2 doc: Reduce expectations for QInputDevice::devices() tqtc/lts-6.2 qt/tqtc-qtbase Status: MERGED +2 0

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            People

              owolff Oliver Wolff
              skoh-qt Sze Howe Koh
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              Dates

                Created:
                Updated:

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