Cannot save the contents of a QGraphicsScene in QGraphicsView

Asked Oct 02 '17 at 13:30

Active Oct 02 '17 at 13:30

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I want my application to save the contents of my scene which contains graphics items in it and later be able to retrieve all those items(not as a QPixmap, but as actual individual items). I have tried using Qsettings but get a QVariant error. My code is:

QSettings settings("AdvProgLab","ERapp");
settings.beginGroup("MainWindow");
settings.setValue("saved_scene",scene);      //Here, scene is a QGraphicsScene
settings.endGroup();

And the error which I am getting is:

qvariant.h:471: error: ‘QVariant::QVariant(void*)’ is private inline QVariant(void *) Q_DECL_EQ_DELETE; ^

error: use of deleted function ‘QVariant::QVariant(void*)’

Can anybody please explain me where I am going wrong ? Or is there any other way by which I can achieve this .

Thank You.

asked Oct 02 '17 at 13:30

pr22

You can't convert QGraphicsScene to QVariant. – Michael Oct 02 '17 at 14:00
@MichaelO. then how can i save the contents of a scene if I want to ? – pr22 Oct 02 '17 at 14:17
Save various parameters, such as position, size, angle etc. – Michael Oct 02 '17 at 14:59
@MichaelO. Saving various parameters , how will the scene know the type of item which it needs to retrieve ? – pr22 Oct 02 '17 at 15:49
Look at this: https://stackoverflow.com/questions/30678877/save-load-items-from-a-qgraphicsscene – Michael Oct 02 '17 at 16:24

Cannot save the contents of a QGraphicsScene in QGraphicsView

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