.h
DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FLoginErrorEvent, FString, ErrorMessage);UPROPERTY(BlueprintAssignable, Category = "Event")FLoginErrorEvent loginErrorEvent;
.cpp
loginErrorEvent.Broadcast(TEXT("hello World")); 
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.h
DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FLoginErrorEvent, FString, ErrorMessage);UPROPERTY(BlueprintAssignable, Category = "Event")FLoginErrorEvent loginErrorEvent;
.cpp
loginErrorEvent.Broadcast(TEXT("hello World"));
转载于:https://www.cnblogs.com/timy/p/8684338.html