Problems whith AssetTypeActions

Question

Hi, I making a pluging with my own Asset type. I registered asset types:

 void FMySuperModule::StartupModule()
 {
     // Register asset types
     IAssetTools& AssetTools = FModuleManager::LoadModuleChecked<FAssetToolsModule>("AssetTools").Get();
     MySuperAssetTypeActions = MakeShareable(new FMySuperAssetTypeActions);
     AssetTools.RegisterAssetTypeActions(MySuperAssetTypeActions.ToSharedRef());
 };

It's MySuperAssetTypeActions.h:

 #include "MySuperModulePrivatePCH.h"
 #include "AssetTypeActions_Base.h"
     
     class FMySuperAssetTypeActions : public FAssetTypeActions_Base
     {
     public:
         // IAssetTypeActions interface
         virtual FText GetName() const override { return NSLOCTEXT("AssetTypeActions", "AssetTypeActions_MySuperAsset", "My Super Asset"); }
         virtual FColor GetTypeColor() const override { return FColor(149, 70, 255); }
         virtual UClass* GetSupportedClass() const override { return UMySuperObject::StaticClass();}
         virtual uint32 GetCategories() override { return EAssetTypeCategories::Misc;}
         // End of IAssetTypeActions interface
     };

And there are errors:

 MySuperModule.cpp.obj : error LNK2001: unresolved external symbol "public: virtual class FText __cdecl FMySuperAssetTypeActions::GetName(void)const " (?GetName@FMySuperAssetTypeActions@@UEBA?AVFText@@XZ)
 MySuperModule.cpp.obj : error LNK2001: unresolved external symbol "public: virtual struct FColor __cdecl FMySuperAssetTypeActions::GetTypeColor(void)const " (?GetTypeColor@FMySuperAssetTypeActions@@UEBA?AUFColor@@XZ)
 MySuperModule.cpp.obj : error LNK2001: unresolved external symbol "public: virtual class UClass * __cdecl FMySuperAssetTypeActions::GetSupportedClass(void)const " (?GetSupportedClass@FMySuperAssetTypeActions@@UEBAPEAVUClass@@XZ)
 MySuperModule.cpp.obj : error LNK2001: unresolved external symbol "public: virtual unsigned int __cdecl FMySuperAssetTypeActions::GetCategories(void)" (?GetCategories@FMySuperAssetTypeActions@@UEAAIXZ)

What did I do wrong?

Answer 1

0

OK.I opened MySuperAssetTypeActions.h not in VS project, there was functions without implementation, just

 virtual FText GetName() const override
 virtual FColor GetTypeColor() const override
 virtual UClass* GetSupportedClass() const override 
 virtual uint32 GetCategories() override

Adding implementation solved the problem

answered Oct 03 '15 at 01:54 PM

artemavrin
108 ● 3 ● 5 ● 15

tgraupmann Jun 19 '17 at 07:04 PM

Thanks for this thread, it was super handy. Here's the source that I used from your example to make an asset type action work from a plugin.

https://github.com/tgraupmann/UE4ChromaSDK/commit/082ea19a3ca3fa49b738f25217d7065641856d8d

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Answer 2

0

Did you add the UnrealED dependencies to the build.cs?

answered Oct 03 '15 at 01:23 PM

lion032
901 ● 31 ● 80 ● 52

artemavrin Oct 03 '15 at 01:25 PM

Yea

 PrivateDependencyModuleNames.AddRange(
                 new string[]
                 {
                     "Core",
                     "CoreUObject",
                     "AssetTools",
                     "UnrealEd"
                 }
             );
 
             PrivateIncludePathModuleNames.AddRange(
                 new string[]
                 {
                     "AssetTools",
                     "AssetRegistry"
                 }
             );
 
             PublicIncludePathModuleNames.Add("LevelEditor");
 
             DynamicallyLoadedModuleNames.AddRange(
                 new string[] { 
                     "AssetRegistry"
                 }
             );

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