FStructTracker

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API > API/Runtime > API/Runtime/CoreUObject > API/Runtime/CoreUObject/StructUtils

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Syntax

struct FStructTracker  
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struct FStructTracker

Remarks

The TStructTypeBitSet holds information on "existence" of subtypes of a given UStruct. The information on available child-structs is gathered lazily - the internal FStructTracker is assigning a given type a new index the very first time the type is encountered. To create a specific instantiation of the type you also need to provide a type that will instantiate a static FStructTracker instance. The supplied macros hide this details away however.

To do declare a bitset type for an arbitrary struct type FFooBar add the following in your header or cpp file:

DECLARE_STRUCTTYPEBITSET(FMyFooBarBitSet, FFooBar);

where FMyFooBarBitSet is the alias of the type you can use in your code. To have your type exposed to other modules use DECLARE_STRUCTTYPEBITSET_EXPORTED, like so:

DECLARE_STRUCTTYPEBITSET_EXPORTED(MYMODULE_API, FMyFooBarBitSet, FFooBar);

You also need to instantiate the static FStructTracker added by the DECLARE* macro. You can easily do it by placing the following in your cpp file (continuing the FFooBar example):

DEFINE_TYPEBITSET(FMyFooBarBitSet);

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