vault backup: 2024-10-12 17:19:45
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# UCLASS()
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- **功能描述:** 留空的默认行为是不能在蓝图中被继承,不能在蓝图中定义变量,但拥有反射的功能。
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- **引擎模块:** UHT
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- **元数据类型:** bool
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- **作用机制:** 在ClassFlags中增加[CLASS_MatchedSerializers](../../../Flags/EClassFlags/CLASS_MatchedSerializers.md), [CLASS_Native](../../../Flags/EClassFlags/CLASS_Native.md), [CLASS_RequiredAPI](../../../Flags/EClassFlags/CLASS_RequiredAPI.md), [CLASS_TokenStreamAssembled](../../../Flags/EClassFlags/CLASS_TokenStreamAssembled.md), [CLASS_Intrinsic](../../../Flags/EClassFlags/CLASS_Intrinsic.md), [CLASS_Constructed](../../../Flags/EClassFlags/CLASS_Constructed.md)
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- **关联项:** [不写UCLASS()](不写UCLASS().md)
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- **常用程度:★★★★★**
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不能在蓝图中被继承,不能在蓝图中定义变量。
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但依然都可以通过蓝图ConstructObject创建出来。对于想要拥有反射功能,但是并不想在蓝图中被使用会挺适合。
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## 示例代码:
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```cpp
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/*
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[MyClass_Default Class->Struct->Field->Object /Script/Insider.MyClass_Default] [IncludePath = Class/MyClass_Default.h, ModuleRelativePath = Class/MyClass_Default.h]
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ObjectFlags: RF_Public | RF_Standalone | RF_Transient
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Outer: Package /Script/Insider
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ClassFlags: CLASS_MatchedSerializers | CLASS_Native | CLASS_RequiredAPI | CLASS_TokenStreamAssembled | CLASS_Intrinsic | CLASS_Constructed
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Size: 48
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{
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public: void ExecuteUbergraph(int32 EntryPoint);
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};
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*/
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UCLASS()
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class INSIDER_API UMyClass_Default :public UObject
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{
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GENERATED_BODY()
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public:
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};
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```
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默认的拥有这些标志:CLASS_MatchedSerializers | CLASS_Native | CLASS_RequiredAPI | CLASS_TokenStreamAssembled | CLASS_Intrinsic | CLASS_Constructed
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