本文整理汇总了C++中QScriptEngine::nullValue方法的典型用法代码示例。如果您正苦于以下问题：C++ QScriptEngine::nullValue方法的具体用法？C++ QScriptEngine::nullValue怎么用？C++ QScriptEngine::nullValue使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QScriptEngine的用法示例。
在下文中一共展示了QScriptEngine::nullValue方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: newQObject
QScriptValue QDeclarativeObjectScriptClass::newQObject(QObject *object, int type)
{
QScriptEngine *scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine);
if (!object)
return scriptEngine->nullValue();
// return newObject(scriptEngine, this, new ObjectData(object, type));
if (QObjectPrivate::get(object)->wasDeleted)
return scriptEngine->undefinedValue();
QDeclarativeData *ddata = QDeclarativeData::get(object, true);
if (!ddata) {
return scriptEngine->undefinedValue();
} else if (!ddata->indestructible && !object->parent()) {
return newObject(scriptEngine, this, new ObjectData(object, type));
} else if (!ddata->scriptValue) {
ddata->scriptValue = new QScriptValue(newObject(scriptEngine, this, new ObjectData(object, type)));
return *ddata->scriptValue;
} else if (ddata->scriptValue->engine() == QDeclarativeEnginePrivate::getScriptEngine(engine)) {
return *ddata->scriptValue;
} else {
return newObject(scriptEngine, this, new ObjectData(object, type));
}
}示例2: newList
QScriptValue QDeclarativeListScriptClass::newList(QObject *object, int propId, int propType)
{
QScriptEngine *scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine);
if (!object || propId == -1)
return scriptEngine->nullValue();
ListData *data = new ListData;
data->object = object;
data->propertyType = propType;
void *args[] = { &data->property, 0 };
QMetaObject::metacall(object, QMetaObject::ReadProperty, propId, args);
return newObject(scriptEngine, this, data);
}示例3: Value
QDeclarativeObjectScriptClass::Value
QDeclarativeObjectScriptClass::property(QObject *obj, const Identifier &name)
{
QScriptEngine *scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine);
if (name == m_destroyId.identifier)
return Value(scriptEngine, m_destroy);
else if (name == m_toStringId.identifier)
return Value(scriptEngine, m_toString);
if (lastData && !lastData->isValid())
return Value();
Q_ASSERT(obj);
QDeclarativeEnginePrivate *enginePriv = QDeclarativeEnginePrivate::get(engine);
if (lastTNData) {
if (lastTNData->type)
return Value(scriptEngine, enginePriv->typeNameClass->newObject(obj, lastTNData->type));
else
return Value(scriptEngine, enginePriv->typeNameClass->newObject(obj, lastTNData->typeNamespace));
} else if (lastData->flags & QDeclarativePropertyCache::Data::IsFunction) {
if (lastData->flags & QDeclarativePropertyCache::Data::IsVMEFunction) {
return Value(scriptEngine, ((QDeclarativeVMEMetaObject *)(obj->metaObject()))->vmeMethod(lastData->coreIndex));
} else {
// Uncomment to use QtScript method call logic
// QScriptValue sobj = scriptEngine->newQObject(obj);
// return Value(scriptEngine, sobj.property(toString(name)));
return Value(scriptEngine, methods.newMethod(obj, lastData));
}
} else {
if (enginePriv->captureProperties && !(lastData->flags & QDeclarativePropertyCache::Data::IsConstant)) {
enginePriv->capturedProperties <<
QDeclarativeEnginePrivate::CapturedProperty(obj, lastData->coreIndex, lastData->notifyIndex);
}
if (QDeclarativeValueTypeFactory::isValueType((uint)lastData->propType)) {
QDeclarativeValueType *valueType = enginePriv->valueTypes[lastData->propType];
if (valueType)
return Value(scriptEngine, enginePriv->valueTypeClass->newObject(obj, lastData->coreIndex, valueType));
}
if (lastData->flags & QDeclarativePropertyCache::Data::IsQList) {
return Value(scriptEngine, enginePriv->listClass->newList(obj, lastData->coreIndex, lastData->propType));
} else if (lastData->flags & QDeclarativePropertyCache::Data::IsQObjectDerived) {
QObject *rv = 0;
void *args[] = { &rv, 0 };
QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
return Value(scriptEngine, newQObject(rv, lastData->propType));
} else if (lastData->flags & QDeclarativePropertyCache::Data::IsQScriptValue) {
QScriptValue rv = scriptEngine->nullValue();
void *args[] = { &rv, 0 };
QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
return Value(scriptEngine, rv);
} else if (lastData->propType == QMetaType::QReal) {
qreal rv = 0;
void *args[] = { &rv, 0 };
QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
return Value(scriptEngine, rv);
} else if (lastData->propType == QMetaType::Int) {
int rv = 0;
void *args[] = { &rv, 0 };
QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
return Value(scriptEngine, rv);
} else if (lastData->propType == QMetaType::Bool) {
bool rv = false;
void *args[] = { &rv, 0 };
QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
return Value(scriptEngine, rv);
} else if (lastData->propType == QMetaType::QString) {
QString rv;
void *args[] = { &rv, 0 };
QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
return Value(scriptEngine, rv);
} else if (lastData->propType == QMetaType::UInt) {
uint rv = 0;
void *args[] = { &rv, 0 };
QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
return Value(scriptEngine, rv);
} else if (lastData->propType == QMetaType::Float) {
float rv = 0;
void *args[] = { &rv, 0 };
QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
return Value(scriptEngine, rv);
} else if (lastData->propType == QMetaType::Double) {
double rv = 0;
void *args[] = { &rv, 0 };
QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
return Value(scriptEngine, rv);
} else {
QVariant var = obj->metaObject()->property(lastData->coreIndex).read(obj);
return Value(scriptEngine, enginePriv->scriptValueFromVariant(var));
}
}
}