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> Unreal Engine API Reference > Runtime > CoreUObject > UObject > FWeakObjectPtr > FWeakObjectPtr::IsStale

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FWeakObjectPtr::IsStale

Slightly different than !IsValid(), returns true if this used to point to a [UObject](API\Runtime\CoreUObject\UObject\UObject), but doesn't any more and has not been assigned or reset in the mean time.

Windows

MacOS

Linux

References

Module	CoreUObject
Header	/Engine/Source/Runtime/CoreUObject/Public/UObject/WeakObjectPtr.h
Include	#include "UObject/WeakObjectPtr.h"
Source	/Engine/Source/Runtime/CoreUObject/Private/UObject/WeakObjectPtr.cpp

Syntax

bool IsStale
(
bool bIncludingIfPendingKill,
bool bThreadsafeTest
) const

Remarks

Slightly different than !IsValid(), returns true if this used to point to a UObject, but doesn't any more and has not been assigned or reset in the mean time.

Returns

true if this used to point at a real object but no longer does.

Parameters

Parameter	Description
bIncludingIfPendingKill	if this is false, pendingkill objects are not considered stale
bThreadsafeTest	set it to true when testing outside of Game Thread. Results in false if WeakObjPtr point to an existing object (no flags checked)

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