EXP3.C++控制蓝图节点输入输出

测试不同传参方法对应的蓝图节点结果

实践

1. 新建一个蓝图函数库类

蓝图函数库是一个静态函数的合集，便于测试

2. Const控制

	UFUNCTION(BlueprintCallable, Category ="TEST",meta = ( tooltip = "值传递"))
	static void PassbyValue(TArray<ACameraActor*>Camera, int32 test);
	
	UFUNCTION(BlueprintCallable, Category ="TEST",meta = ( tooltip = "值引用"))
	static void PassbyConstReference(const TArray<ACameraActor*>& Camera, const int32 test);
	
	UFUNCTION(BlueprintCallable, Category ="TEST",meta = ( tooltip = "const修饰的值引用"))
    	static void PassbyReference(TArray<ACameraActor*>& Camera,int32 &test);

3. UPARAM(ref)

UFUNCTION(BlueprintCallable)
void FillDogInfo(FDogInfo& OutResult);

UFUNCTION(BlueprintCallable)
void UseAndFillDogInfo(
    UPARAM(ref) FDogInfo& SearchParams);

UFUNCTION(BlueprintCallable)
void UseDogInfo(const FDogInfo& SearchParams);

其他

蓝图中数组只能用引用传递。