Adds supplementary information to the itemChange() function.
The meaning of each member of this class is defined by the change type.
See also
ItemChange
The boolean value that has changed: visible , enabled , activeFocus , or antialiasing .
See also
ItemChange
The item that has been added or removed as a child , or the new parent .
See also
ItemChange
The numeric value that has changed: opacity , rotation , or device pixel ratio .
See also
ItemChange
The window in which the item has been shown, or nullptr if the item has been removed from a window.
See also
ItemChange
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