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Message definition (Development/Tutorials/Common Programming Mistakes)
Qt code involving QObject generally uses parent/child relations to free allocated memory; when constructing a QObject (e.g. a widget) it can be given a parent, and when the parent is deleted it deletes all its children. The parent is also set when you add a widget to a layout, for example.

Qt code involving QObject generally uses parent/child relations to free allocated memory; when constructing a QObject (e.g. a widget) it can be given a parent, and when the parent is deleted it deletes all its children. The parent is also set when you add a widget to a layout, for example.