Difference between Repeater and Instantiator
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What is the difference between Repeater and Instantiator?
For Repeater it says:
Instantiates a number of Item-based components using a provided model
For Instantiator it says:
A Instantiator can be used to control the dynamic creation of objects, or to dynamically create multiple objects from a template.
But ins't that the same?
Is the Instantiator even ever used nowadays. I couldn't find good examples.
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Repeater only work with Item delegates and it parents the delegate it creates to the Repeater's parent item.
Instantiator work with every objects. -
Repeater only work with Item delegates and it parents the delegate it creates to the Repeater's parent item.
Instantiator work with every objects.So that means with Instantiator I have to parent the items myself after?
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Both types have signals that get called when items/objects are created. You can use these signals to insert/remove the items/objects. I use Instantiators when I want precise control of parenting via a function that I call to determine the parenting. I also use Instantiators to create non-Item objects. For instance you can create Emitters for particles on the fly this way. I have found Repeaters useful for creating MenuItems for Menus for things like file history.
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Both types have signals that get called when items/objects are created. You can use these signals to insert/remove the items/objects. I use Instantiators when I want precise control of parenting via a function that I call to determine the parenting. I also use Instantiators to create non-Item objects. For instance you can create Emitters for particles on the fly this way. I have found Repeaters useful for creating MenuItems for Menus for things like file history.
@fcarney Thanks for the explanation. I wasn't thinking about stuff like Emitter to create dynamically.
So the main differences are:
Repeater:
Can only create Item based elements dynamically
Parenting happens automatically for created elements.
Instantiator:
Can create "all" Elements dynamically.
Created elements have to be parented manually.
Which library do you have to import to use Instantiator? I tried to use
import QtQml 2.2like the docs say but than it says "Unknown component". -
@sandro4912 said in Difference between Repeater and Instantiator:
Which library do you have to import to use Instantiator?
https://doc.qt.io/qt-5/qml-qtqml-models-instantiator.html
At the top of page it says the import. Also, searching "qml instantiator" will find that page.
