Is there any way to refresh/update a Context Property
-
I have a QVariantMap instance and im passing it as a Context Property by
@
QVariantMap theMap;//code block 1
viewer.rootContext()->setContextProperty("theMap", theMap);
//code block 2
@if i populate theMap at code block 1 i can see changes in QML side but if i do it in code block 2 the changes will no be occur in QML.
My question is how can i update theMap after passing it as a ContextProperty.
Feel free to suggest different approaches :) -
The property is copied when you assign it.
You should use a QObject instead, and define your data as Q_PROPERTY with NOTIFY signals, so that QML engine can know it has changed.
-
thx for answer. i solved this problem by setting the context property each time i update it.
i mean
@
//helper class..
void onMapUpdated()
{
this->_viewer->rootContext()->setContextProperty("theMap", theMap);
}
@- i passed the ApplciaitonViewer object as a paramter to the helper class constructor.
it is working now. but im worried about its drawbacks. what can they be? do u have an opinion?
