> For the complete documentation index, see [llms.txt](https://docs.oserosuite.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.oserosuite.com/technical-notes/unreal-engine-notes/editor-engine/extending-the-editor-with-fextender.md).

# Extending the Editor with FExtender

### Example <a href="#example" id="example"></a>

```cpp
TSharedPtr<FExtender> TestExtender = MakeShareable(new FExtender);
TestExtender->AddToolBarExtension("CommonActions", EExtensionHook::After, NULL, FToolBarExtensionDelegate::CreateStatic(&FOS_SLV_CommandsCallbacks::BuildToolbar));

FLevelEditorModule& LevelEditorModule = FModuleManager::LoadModuleChecked<FLevelEditorModule>("LevelEditor");
LevelEditorModule.GetToolBarExtensibilityManager()->AddExtender(TestExtender);
```

1. Create the extender.
2. Add the toolbar (or menu) extension, defining where it should be placed and the create function.
3. Find the correct module.
4. Add the extender to the Extensibility Manager

### Extensibility Managers <a href="#extensibility-managers" id="extensibility-managers"></a>

#### Global <a href="#global" id="global"></a>

Add to all asset editors - ie, Actor Blueprint, Animation Blueprint, Data Asset, etc

```cpp
FAssetEditorToolkit::GetSharedToolBarExtensibilityManager()->AddExtender(TestExtender);
```

#### Level Editor <a href="#level-editor" id="level-editor"></a>

```cpp
FLevelEditorModule& LevelEditorModule = FModuleManager::LoadModuleChecked<FLevelEditorModule>("LevelEditor");
LevelEditorModule.GetToolBarExtensibilityManager()->AddExtender(TestExtender);
```

#### Persona <a href="#persona" id="persona"></a>

```cpp
FPersonaModule& PersonaModule = FModuleManager::LoadModuleChecked<FPersonaModule>("PersonaModule");
PersonaModule.GetToolBarExtensibilityManager()->AddExtender(TestExtender);
```

#### Animation Blueprint <a href="#animation-blueprint" id="animation-blueprint"></a>

```cpp
IAnimationEditorModule& AnimationEditorModule = FModuleManager::GetModuleChecked<IAnimationEditorModule>("AnimationEditor");
AnimationEditorModule.GetToolBarExtensibilityManager()->AddExtender(TestExtender);
```

#### Actor/Object Blueprints <a href="#actor-object-blueprints" id="actor-object-blueprints"></a>

NOT Animations, Data Assets, etc - ones that have a normal Blueprint Graph

```cpp
FBlueprintEditorModule& BlueprintEditorModule = FModuleManager::LoadModuleChecked<FBlueprintEditorModule>("Kismet");
BlueprintEditorModule.GetMenuExtensibilityManager()->AddExtender(TestExtender);
```