UE4 UMG Debounce Macro

UIDebounce.h

// Can be used on buttons to allow single click in some period of time, for example limit to few clicks per second.

#define DEBOUNCE(s, ...) \
	static bool bActive; \
	if (!bActive) { \
		bActive = true; \
		__VA_ARGS__; \
		FTimerHandle DebounceTimerHandle; \
		GetWorld()->GetTimerManager().SetTimer(DebounceTimerHandle, FTimerDelegate().CreateLambda([](){\
			bActive = false; \
		}), s, false); \
	}

// Usage examples:
DEBOUNCE(ClickDebounceTime, OnButtonClicked.Broadcast());