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Cannot Set Property On Internal Context

Setting a context object is both faster and easier than manually adding and maintaing context property values. Since4.7 Contexts allow data to be exposed to the QML components instantiated by the QML engine. Reply With Quote 2nd June 2014,19:31 #5 anda_skoa View Profile View Forum Posts View Blog Entries View Articles Administrator Join Date Jan 2006 Location Graz, Austria Posts 7,487 Thanks 29 Thanked Thus whenever possible you should complete "setup" of the context before using it to create any objects. \sa {qtqml-cppintegration-exposecppattributes.html}{Exposing Attributes of C++ Types to QML} */ /*! \internal */ QQmlContext::QQmlContext(QQmlEngine *e, have a peek here

Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. Do you mean using qmlRegisterType("com.mycompany.X", 1, 0, "X")? Set a the \a value of the \a name property on this context. */ void QQmlContext::setContextProperty(const QString &name, const QVariant &value) { Q_D(QQmlContext); if (d->notifyIndex == -1) d->notifyIndex = QMetaObjectPrivate::absoluteSignalCount(&QQmlContext::staticMetaObject); QQmlContextData Idea is simple: Have an interface that all plugins implement. https://forum.qt.io/topic/35958/how-to-set-property-into-a-sub-context

Changes to the property's values are detected through the property's notify signal. Return the context object, or 0 if there is no context object. */ QObject *QQmlContext::contextObject() const { Q_D(const QQmlContext); return d->data->contextObject; } /*! Navigation Qt Forum Login Search Search Categories Recent Tags Popular Groups Search Your browser does not seem to support JavaScript. Create a new QQmlContext with the given \a parentContext, and the QObject \a parent. */ QQmlContext::QQmlContext(QQmlContext *parentContext, QObject *parent) : QObject(*(new QQmlContextPrivate), parent) { Q_D(QQmlContext); d->data = new QQmlContextData(this); d->data->setParent(parentContext?QQmlContextData::get(parentContext):0); }

References d, QDeclarativeContextData::get(), QDeclarativeContextData, and QDeclarativeEngine::rootContext(). 177: QObject(*(new QDeclarativeContextPrivate), parent) 178{ 179 Q_D(QDeclarativeContext); 180 d->data = new QDeclarativeContextData(this); 181 182 d->data->setParent(engine?QDeclarativeContextData::get(engine->rootContext()):0); 183} ddouble dDefinition: qnumeric_p.h:62 QDeclarativeEngine::rootContextQDeclarativeContext * rootContext() const Definition: qdeclarativeengine.cpp:696 Return the context's parent QQmlContext, or 0 if this context has no parent or if the parent has been destroyed. */ QQmlContext *QQmlContext::parentContext() const { Q_D(const QQmlContext); return d->data->parent?d->data->parent->asQQmlContext():0; } /*! The following example has the same effect as the previous one, but it uses a context object. References QDeclarativeContextData::contextObject, contextProperty(), d, QDeclarativeGuard< T >::data(), data, QDeclarativeContextData::engine, QVariant::fromValue(), QDeclarativeContextData::idValues, QVariant::isValid(), parentContext(), QDeclarativePropertyCache::property(), QObject::property(), QDeclarativeContextData::propertyNames, QString::toUtf8(), QDeclarativeIntegerCache::value(), and value.

The context properties are defined and updated by calling QDeclarativeContext::setContextProperty(). References d, QDeclarativeContextData::get(), and QDeclarativeContextData. 190: QObject(*(new QDeclarativeContextPrivate), parent) 191{ 192 Q_D(QDeclarativeContext); 193 d->data = new QDeclarativeContextData(this); 194 195 d->data->setParent(parentContext?QDeclarativeContextData::get(parentContext):0); 196} ddouble dDefinition: qnumeric_p.h:62 QDeclarativeContext::QDeclarativeContextDatafriend class QDeclarativeContextDataDefinition: qdeclarativecontext.h:103 QDeclarativeContextPrivateDefinition: qdeclarativecontext_p.h:83 QDeclarativeContextData::getstatic Referenced by contextProperty(), and QDeclarativeVisualDataModel::indexOf(). 372{ 373 Q_D(const QDeclarativeContext); 374 QVariant value; 375 int idx = -1; 376 377 QDeclarativeContextData *data = d->data; 378 379 if (data->propertyNames) 380 idx = data->propertyNames->value(name); try here friend class QDeclarativeComponent friend Definition at line 99 of file qdeclarativecontext.h.

But then, if I click on the MouseArea, assuming that an id other than 3 will be passed, a new context property with the same name will be exposed, causing the NoScript). References d, data, if, QUrl::isEmpty(), QDeclarativeContextData::parent, and QDeclarativeContextData::url. Director 8 Demystified steps in to guide readers through the related technologies (Lingo and Shockwave), technical skills, and creative concepts necessary to tap the power of Director 8.

If the context object in the example is no longer needed when the window component instance is destroyed, the context must be destroyed explicitly. https://github.com/Satius/qt5/blob/master/qtdeclarative/src/qml/qml/qqmlcontext.cpp It simplifies the task of writing and maintaining GUI applications (open source edition, for Linux/X11). [ To the main Qt source changes report ] tst_qqmlcontext.cpp(qt-everywhere-opensource-src-5.5.1):tst_qqmlcontext.cpp(qt-everywhere-opensource-src-5.6.0) skipping to change at line 436 Thus whenever possible you should complete "setup" of the context before using it to create any objects. \sa {qtqml-cppintegration-exposecppattributes.html}{Exposing Attributes Why did the best potions master have greasy hair?

Cheers, _ Reply With Quote 2nd June 2014,13:30 #3 gmanish View Profile View Forum Posts View Blog Entries View Articles Beginner Join Date Jun 2014 Posts 5 Thanks 1 Thanked 1 navigate here You can pass a context to its create method. Child contexts inherit the context properties of their parents; if a child context sets a context property that already exists in its parent, This new edition also covers features new to this latest release, including new design and authoring tools and one-click publishing of Shockwave content. Προεπισκόπηση αυτού του βιβλίου » Τι λένε οι

Why are password boxes always blanked out when other sensitive data isn't? The following example shows a Qt model being bound to a context and then accessed from a QML file. \code QQmlEngine engine; QStringListModel modelData; QQmlContext *context = new QQmlContext(engine.rootContext()); context->setContextProperty("myModel", &modelData); Personal Open source Business Explore Sign up Sign in Pricing Blog Support Search GitHub This repository Watch 2 Star 0 Fork 2 Satius/qt5 Code Issues 0 Pull requests 0 Projects http://culturahq.com/cannot-set/cannot-set-readonly-property-groovy.html If the \c context object in the example is no longer needed when the \c window component instance is destroyed, the \c context must be destroyed explicitly.

Refreshing flushes all // context-tree dependent caches in the expressions, and should occur every time the context tree // *structure* (not values) changes. Cheers, _ Thanks for your time on this. All the properties of the context object are available by name in the context, as though they were all individually added through calls

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is there a way maybe to pass the component from C++ to QML in order to access it? Windows xp sp1a download fullFruityloops full free download07 download full nhlDownload full version for windows 8Download full version of tornado jockeyRoad rash full version downloadsIron blitz full version downloadDownload full version friend class QDeclarativeObjectScriptClass friend Definition at line 98 of file qdeclarativecontext.h. http://culturahq.com/cannot-set/cannot-set-value-to-null-when-checkbox-property.html If you are looking for information about Qt related issue — register and post your question.


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