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> Unreal Engine API Reference > Runtime > SlateCore > Widgets > SWidget > SWidget::InvalidateChildRemovedFromTree

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SWidget::InvalidateChildRemovedFromTree

Called when a child is removed from the tree parent's widget tree either by removing it from a slot.

Windows

MacOS

Linux

References

Module	SlateCore
Header	/Engine/Source/Runtime/SlateCore/Public/Widgets/SWidget.h
Include	#include "Widgets/SWidget.h"
Source	/Engine/Source/Runtime/SlateCore/Private/Widgets/SWidget.cpp

Syntax

void InvalidateChildRemovedFromTree
(
SWidget & Child
)

Remarks

Called when a child is removed from the tree parent's widget tree either by removing it from a slot. This can also be called manually if you've got some non-slot based what of no longer reporting children An example of a widget that needs manual calling is SWidgetSwitcher. It keeps all its children but only arranges and paints a single "active" one. Once a child becomes inactive, its cached data should be removed.

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