接口的使用

.h

// This class does not need to be modified.
UINTERFACE(MinimalAPI, Blueprintable)
class UStepInterface : public UInterface
{
    GENERATED_BODY()
};

/**
 * 
 */

class STEPSSYSTEM_API IStepInterface
{
    GENERATED_BODY()

    // Add interface functions to this class. This is the class that will be inherited to implement this interface.
public:
    UFUNCTION(BlueprintImplementableEvent, BlueprintCallable, Category = "步骤系统")
    void BPI_StopDefaultInput(bool WantStop);
};

.cpp

if (MyController->Implements<UStepInterface>()) IStepInterface::Execute_BPI_StopDefaultInput(MyController,true);