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  1. Qt
  2. QTBUG-72227

QFileSystemWatcher reacts only once on file change

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Details

    • Bug
    • Resolution: Fixed
    • P2: Important
    • 5.12
    • 5.11.2
    • Core: Filesystem watching
    • None
    • Linux/X11

    Description

      Catching file change in following way:

          QFileSystemWatcher watcher;
    QFileInfo file(url.toLocalFile());
    watcher.addPath(file.absoluteFilePath());
    connect(&watcher, &QFileSystemWatcher::fileChanged, this, &MyClass::mySlot);

      slot receives signal only once, then QFileSystemWatcher does not react on any file change. To catch file changes use following workaround - added following lines:

          qmlWatcher.addPath(file.absolutePath());
    connect(&watcher, &QFileSystemWatcher::directoryChanged, this, &MyClass::mySlot);

      In this case able to catch all further file modifications.

      Attachments

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-19350 QFileSystemWatcher unwatches file

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-24898 QFileSystemWatcher (inotify) and editors that rename files

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-71768 qmlpreview command line client fails to track replaced files

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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              thiago Thiago Macieira
              jirauser39314 user-45b5b (Inactive)
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              Dates

                Created:
                Updated:
                Resolved:

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