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unresolved external symbol UUserWidget

Hi, I followed this guide for converting my Blueprint project to C++.

All went well until the last step (build Development project in Visual Studio) when I get 'unresolved external symbol' errors all related (afaict) to UUserWidget.

This previous answer talks about removing "MinimalAPI" metadata from WidgetComponent.h, but I cannot find any references to it. Relevant lines in WidgetComponent.h:

 UCLASS(Blueprintable, ClassGroup="UserInterface", hidecategories=(Object,Activation,"Components|Activation",Sockets,Base,Lighting,LOD,Mesh), editinlinenew, meta=(BlueprintSpawnableComponent) )
 class UMG_API UWidgetComponent : public UMeshComponent

It also involves editing the engine's source code, which isn't ideal. One comment by AskNinja says "change UWidgetComponent.h to use the UMG_API " which I don't know how to do. Any ideas?

Thanks in advance, Darren.

Edit: attached error log

Product Version: UE 4.14
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asked Jan 25 '17 at 01:07 PM in C++ Programming

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It's possible you needed to add the "UMG" module to your game module's dependencies. Check out this page near the bottom:


I just ran into something similar myself in version 4.17.1 trying to add a UUserWidget * UProperty.

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answered Sep 04 '17 at 08:08 AM

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