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Unreal Engine C++ API Reference > Runtime > Engine > FMaterialExpressionKey > FMaterialExpressionKey
References
| Module | Engine |
| Header | /Engine/Source/Runtime/Engine/Public/MaterialShared.h |
| Include | #include "MaterialShared.h" |
FMaterialExpressionKey
&40;
UMaterialExpression &42; InExpression,
int32 InOutputIndex,
const FGuid & InMaterialAttributeID,
bool bInCompilingPreviousFrameKey
&41;