Why isn't my custom USTRUCT being included

Development Pipeline & Plugins Editor Scripting
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1

I have added a custom USTRUCT in C++ but it isn’t available in the editor, even after a complete restart. My project is titled “CrashGame”.

In CrashGame.h, I have this:

#pragma once

#include "Engine.h"
#include "CrashTypes.h"

In CrashGame.cpp, I have this:

#include "CrashGame.h"

IMPLEMENT_PRIMARY_GAME_MODULE( FDefaultGameModuleImpl, CrashGame, "CrashGame" );

In CrashTypes.h, I have my custom struct:

#include "SlateBasics.h"
#include "SlateExtras.h"
#include "CrashTypes.generated.h"

#pragma once

USTRUCT()
struct FCrashItem
{
    GENERATED_USTRUCT_BODY()

    /** A reference to the actual actor this item is for */
	UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category=Item)
    AActor* Item;

    /** The image to show in an inventory grid for this item */
	UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category=Item)
    UTexture2D* ItemImage;

    /** The name of this item to display in tooltips */
	UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category=Item)
    FText ItemName;

    /** The tagline to display in tooltips for this item */
	UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category=Item)
    FText ItemTagline;

    /** The number of rows this item occupies (the height) */
	UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category=Item)
    int32 Rows;

    /** The number of columns this item occupies (the width) */
	UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category=Item)
    int32 Columns;
    
    /** Set the defaults */
    FCrashItem() {
        Item = NULL;
        ItemImage = NULL;
        ItemName = FText::GetEmpty();
        ItemTagline = FText::GetEmpty();
        Rows = 1;
        Columns = 1;
    }
};

I get no compile errors when I compile:

1>------ Rebuild All started: Project: CrashGame, Configuration: Development_Editor x64 ------
2>------ Skipped Rebuild All: Project: UE4, Configuration: BuiltWithUnrealBuildTool Win32 ------
2>Project not selected to build for this solution configuration 
1>  Cleaning CrashGameEditor Binaries...
1>  Compiling game modules for hot reload
1>  Compiling game modules for hot reload
1>  Parsing headers for CrashGameEditor
1>  Reflection code generated for CrashGameEditor
1>  Performing 7 actions (4 in parallel)
1>  [2/7] Resource ModuleVersionResource.rc.inl
1>  [3/7] Resource PCLaunch.rc
1>  PCH.CrashGame.h.cpp
1>  CrashGame.cpp
1>  CrashGame.generated.cpp
1>  CrashGridPanel.cpp
1>  [7/7] Link UE4Editor-CrashGame-7390.dll
1>     Creating library D:\My Documents\Unreal Projects\CrashGame\Intermediate/Build/Win64\UE4Editor\Development\UE4Editor-CrashGame-7390.lib and object D:\My Documents\Unreal Projects\CrashGame\Intermediate/Build/Win64\UE4Editor\Development\UE4Editor-CrashGame-7390.exp
1>  -------- End Detailed Actions Stats -----------------------------------------------------------
1>  Total build time: 75.14 seconds
========== Rebuild All: 1 succeeded, 0 failed, 1 skipped ==========

I imagine I’m missing a step, but I don’t know what.

2

So I just added a C++ method that takes my struct as a parameter and the function shows up in blueprint and I can drag off from the pin and make a struct of my custom type, but my custom type isn’t displayed when adding a variable to a Blueprint class.

3

You are probably missing the BlueprintType specifier:

USTRUCT(BlueprintType)

From the source:

/// Exposes this struct as a type that can be used for variables in blueprints
		BlueprintType,