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> Unreal Engine API Reference > Runtime > UMG > Blueprint > UUserWidget > UUserWidget::PreConstruct

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UUserWidget::PreConstruct

Called by both the game and the editor.

Windows

MacOS

Linux

References

Module	UMG
Header	/Engine/Source/Runtime/UMG/Public/Blueprint/UserWidget.h
Include	#include "Blueprint/UserWidget.h"

Syntax

void PreConstruct
(
bool IsDesignTime
)

Remarks

Called by both the game and the editor. Allows users to run initial setup for their widgets to better preview the setup in the designer and since generally that same setup code is required at runtime, it's called there as well.

WARNING** This is intended purely for cosmetic updates using locally owned data, you can not safely access any game related state, if you call something that doesn't expect to be run at editor time, you may crash the editor.

In the event you save the asset with blueprint code that causes a crash on evaluation. You can turn off PreConstruct evaluation in the Widget Designer settings in the Editor Preferences.

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