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API > API/Runtime > API/Runtime/SlateCore > API/Runtime/SlateCore/Types > API/Runtime/SlateCore/Types/Attributes > API/Runtime/SlateCore/Types/Attributes/TSlateMemberAttributeRef
References
| Module | SlateCore |
| Header | /Engine/Source/Runtime/SlateCore/Public/Types/Attributes/SlateAttributeMember.inl |
| Include | #include "Types/Attributes/SlateAttributeMember.inl" |
UE_NODISCARDbool IsValid&40;&41; const
if the reference is valid. A reference can be invalid if the SWidget is destroyed.