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  1. Qt
  2. QTBUG-38871

Code snippet in QMetaMethod documentation missing variable definition

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Details

    • Bug
    • Resolution: Done
    • P2: Important
    • 5.3.0
    • 5.2.0
    • Documentation
    • None

    Description

      Code snippet location:
      http://qt-project.org/doc/qt-5/qmetamethod.html#invoke

      Current code snippet:

      QString retVal;
QByteArray normalizedSignature = QMetaObject::normalizedSignature("compute(QString, int, double)");
int methodIndex = obj->metaObject()->indexOfMethod(normalizedSignature);
QMetaMethod method = metaObject->method(methodIndex);
method.invoke(obj,
              Qt::DirectConnection,
              Q_RETURN_ARG(QString, retVal),
              Q_ARG(QString, "sqrt"),
              Q_ARG(int, 42),
              Q_ARG(double, 9.7));

      Should either be:

      QString retVal;
QMetaObject metaObject = obj->metaObject();
QByteArray normalizedSignature = QMetaObject::normalizedSignature("compute(QString, int, double)");
int methodIndex    = metaObject->indexOfMethod(normalizedSignature);
QMetaMethod method = metaObject->method(methodIndex);
method.invoke(obj,
              Qt::DirectConnection,
              Q_RETURN_ARG(QString, retVal),
              Q_ARG(QString, "sqrt"),
              Q_ARG(int, 42),
              Q_ARG(double, 9.7));

      or:

      QString retVal;
QByteArray normalizedSignature = QMetaObject::normalizedSignature("compute(QString, int, double)");
int methodIndex    = obj->metaObject()->indexOfMethod(normalizedSignature);
QMetaMethod method = obj->metaObject()->method(methodIndex);
method.invoke(obj,
              Qt::DirectConnection,
              Q_RETURN_ARG(QString, retVal),
              Q_ARG(QString, "sqrt"),
              Q_ARG(int, 42),
              Q_ARG(double, 9.7));

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            treinio Topi Reiniö
            nweyand NWeyand
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            Dates

              Created:
              Updated:
              Resolved:

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