vault backup: 2024-10-12 17:19:45
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# Intrinsic
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- **功能描述:** 指定UHT完全不为此类生成代码,需要自己手写。
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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_Intrinsic](../../../Flags/EClassFlags/CLASS_Intrinsic.md)
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- **常用程度:** 0
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指定UHT完全不为此类生成代码,需要自己手写。
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只在C++直接设定,一般新类不设定这个,标记这个的都是UE4内部原生的那些类,相当于已经在源码中手写了元数据代码。
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noexport至少还会解析生成元数据,只是缺少注册。因此instric类的所有元数据flags要自己手动标记。但是intrinsic完全不生成代码。其generated.h和.gen.cpp里面都是空的。noexporttyps.h里的目前采用intrinsic的类只有UCLASS(noexport, Intrinsic)class UModel{},这还是被cpp不编译的。
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```cpp
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//UCLASS(Intrinsic)
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//class INSIDER_API UMyClass_Intrinsic :public UObject //syntax error: missing ';' before '<class-head>'
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//{
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// GENERATED_BODY()
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//
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//};
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//.h
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class INSIDER_API UMyClass_Intrinsic :public UObject
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{
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DECLARE_CLASS_INTRINSIC(UMyClass_Intrinsic, UObject, CLASS_MatchedSerializers, TEXT("/Script/Insider"))
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};
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//.cpp
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IMPLEMENT_INTRINSIC_CLASS(UMyClass_Intrinsic, INSIDER_API, UObject, INSIDER_API, "/Script/Insider", {})
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class COREUOBJECT_API UInterface : public UObject
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{
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DECLARE_CLASS_INTRINSIC(UInterface, UObject, CLASS_Interface | CLASS_Abstract, TEXT("/Script/CoreUObject"))
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};
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```
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