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03-UnrealEngine/Gameplay/UObject/UnrealSpecifiers/Specifier/UPROPERTY/Blueprint/BlueprintAssignable/BlueprintAssignable.md

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+# BlueprintAssignable
+
+- **功能描述：** 在蓝图中可以为这个多播委托绑定事件
+
+- **元数据类型：** bool
+- **引擎模块：** Blueprint
+- **限制类型：** Multicast Delegates
+- **作用机制：** 在PropertyFlags中加入[CPF_BlueprintAssignable](../../../../Flags/EPropertyFlags/CPF_BlueprintAssignable.md)
+- **常用程度：** ★★★
+
+## C++的测试代码：
+
+```cpp
+DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FMyDynamicMulticastDelegate_One, int32, Value);
+
+UPROPERTY(EditAnywhere, BlueprintReadWrite, BlueprintAssignable, BlueprintCallable)
+	FMyDynamicMulticastDelegate_One MyMulticastDelegateAssignAndCall;
+
+UPROPERTY(EditAnywhere, BlueprintReadWrite, BlueprintCallable)
+	FMyDynamicMulticastDelegate_One MyMulticastDelegateCall;
+
+UPROPERTY(EditAnywhere, BlueprintReadWrite, BlueprintAssignable)
+	FMyDynamicMulticastDelegate_One MyMulticastDelegateAssign;
+
+UPROPERTY(EditAnywhere, BlueprintReadWrite)
+	FMyDynamicMulticastDelegate_One MyMulticastDelegate;
+
+```
+
+## 蓝图中的表现：
+
+![Untitled](Untitled.png)
+
+因此一般建议二者标记都加上：
+
+![Untitled](Untitled%201.png)