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  1. Qt
  2. QTBUG-32044

No Windows debug output for ActiveQt DLL projects

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Details

    • Suggestion
    • Resolution: Done
    • Not Evaluated
    • 5.2.0
    • 5.0.2
    • ActiveX Support
    • None

    • Windows

    • 7fb3906d4e7cec7c69feee007b8393c9c2a3a316

    Description

      I have ActiveQt dll.
      qDebug() doesn't produce output to MS Windows debug output, because qDefaultMessageHandler relies on usingWinMain variable (see below), which in case of Windows DLL project is 'false', so I see no regular Windows debug output, it's produced to stderr, which is inconvenient for non-console projects.

      Src\qtbase\src\corelib\global\qlogging.cpp

      static void qDefaultMessageHandler(QtMsgType type, const QMessageLogContext &context, const QString &buf)
{
    QString logMessage = qMessageFormatString(type, context, buf);

#if defined(Q_OS_WIN) && defined(QT_BUILD_CORE_LIB)
#if !defined(Q_OS_WINCE)
    if (usingWinMain)
#endif
    {
        OutputDebugString(reinterpret_cast<const wchar_t *>(logMessage.utf16()));
        return;
    }
#endif // Q_OS_WIN

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            kleint Friedemann Kleint
            zandr Andrei Zakharov
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              Created:
              Updated:
              Resolved:

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