【UE】Ureal引擎使用问题记录

1. E:\workspace\Unreal Project\ActionGSZ\Source\ActionGSZ\Private\GSZCharacterBase.cpp(293) : error C3861: ‘RemoveStartupGameplayAbilities’: identifier not found
   E:\workspace\Unreal Project\ActionGSZ\Source\ActionGSZ\Private\GSZCharacterBase.cpp(294) : error C2065: ‘CharacterLevel’: undeclared identifier
   答：函数不在类作用域内。检查类名、方法名是否正确。

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2. error C2071: ‘uint8’: illegal storage class

……
   F:\SDK\Epic Games\UE_4.26\Engine\Source\Runtime\Core\Public\GenericPlatform/GenericPlatform.h(22) : error C2143: syntax error: missing '{' before '<'
   F:\SDK\Epic Games\UE_4.26\Engine\Source\Runtime\Core\Public\GenericPlatform/GenericPlatform.h(22) : error C2059: syntax error: '<'
   F:\SDK\Epic Games\UE_4.26\Engine\Source\Runtime\Core\Public\GenericPlatform/GenericPlatform.h(23) : error C3856: 'SelectIntPointerType': symbol is not a class template
   F:\SDK\Epic Games\UE_4.26\Engine\Source\Runtime\Core\Public\GenericPlatform/GenericPlatform.h(37) : error C2071: 'uint8': illegal storage class
   F:\SDK\Epic Games\UE_4.26\Engine\Source\Runtime\Core\Public\GenericPlatform/GenericPlatform.h(40) : error C2071: 'uint16': illegal storage class
……
  C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30133\INCLUDE\xtr1common(19): error C2061: syntax error: identifier 'std'
  C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30133\INCLUDE\xtr1common(19): error C2059: syntax error: ';'
  C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30133\INCLUDE\xtr1common(19): fatal error C1003: error count exceeds 100; stopping compilation
……

答：https://answers.unrealengine.com/questions/1053889/view.html

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3. unresolved external symbol

GSZInventoryInterface.gen.cpp.obj : error LNK2001: unresolved external symbol "public: virtual class TMulticastDelegate<void __cdecl(struct FGSZItemSlot,class UGSZItem *),struct FDefaultDelegateUserPolicy> & __cdecl IGSZInventoryInterface::GetSlottedItemChangedDelegate(void)" ([email protected]@@[email protected][email protected]@[email protected]@@[email protected]@@@XZ)

答：检查接口类所有函数是否为纯虚函数。