diff options
Diffstat (limited to 'src/corelib/kernel/qmetaobject.cpp')
| -rw-r--r-- | src/corelib/kernel/qmetaobject.cpp | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/src/corelib/kernel/qmetaobject.cpp b/src/corelib/kernel/qmetaobject.cpp index 215f6aeb74..08cecaffc0 100644 --- a/src/corelib/kernel/qmetaobject.cpp +++ b/src/corelib/kernel/qmetaobject.cpp @@ -2136,8 +2136,15 @@ QVariant QMetaProperty::read(const QObject *object) const return QVariant(); } } + + // the status variable is changed by qt_metacall to indicate what it did + // this feature is currently only used by QtDBus and should not be depended + // upon. Don't change it without looking into QDBusAbstractInterface first + // -1 (unchanged): normal qt_metacall, result stored in argv[0] + // changed: result stored directly in value + int status = -1; QVariant value; - void *argv[2] = { 0, &value }; + void *argv[] = { 0, &value, &status }; if (t == QVariant::LastType) { argv[0] = &value; } else { @@ -2147,8 +2154,8 @@ QVariant QMetaProperty::read(const QObject *object) const const_cast<QObject*>(object)->qt_metacall(QMetaObject::ReadProperty, idx + mobj->propertyOffset(), argv); - if (argv[1] == 0) - // "value" was changed + + if (status != -1) return value; if (t != QVariant::LastType && argv[0] != value.data()) // pointer or reference @@ -2206,13 +2213,19 @@ bool QMetaProperty::write(QObject *object, const QVariant &value) const return false; } - void *argv[2] = { 0, &v }; + // the status variable is changed by qt_metacall to indicate what it did + // this feature is currently only used by QtDBus and should not be depended + // upon. Don't change it without looking into QDBusAbstractInterface first + // -1 (unchanged): normal qt_metacall, result stored in argv[0] + // changed: result stored directly in value, return the value of status + int status = -1; + void *argv[] = { 0, &v, &status }; if (t == QVariant::LastType) argv[0] = &v; else argv[0] = v.data(); object->qt_metacall(QMetaObject::WriteProperty, idx + mobj->propertyOffset(), argv); - return true; + return status; } /*! @@ -2291,6 +2304,8 @@ QMetaMethod QMetaProperty::notifySignal() const } /*! + \since 4.6 + Returns the index of the property change notifying signal if one was specified, otherwise returns -1. |