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03-UnrealEngine/Gameplay/UObject/UnrealSpecifiers/Meta/Widget/ViewmodelBlueprintWidgetExtension.md

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+# ViewmodelBlueprintWidgetExtension
+
+- **功能描述：** 用来验证InListItems的Object类型是否符合EntryWidgetClass的MVVM绑定的ViewModelProperty。
+- **使用位置：** UFUNCTION
+- **引擎模块：** Widget Property
+- **元数据类型：** string="abc"
+- **常用程度：** 0
+
+用来验证InListItems的Object类型是否符合EntryWidgetClass的MVVM绑定的ViewModelProperty。
+
+当前只在ListView里该函数使用。
+
+## 原理：
+
+```cpp
+UCLASS(meta = (EntryInterface = "/Script/UMG.UserObjectListEntry"), MinimalAPI)
+class UListView : public UListViewBase, public ITypedUMGListView<UObject*>
+{
+	UFUNCTION(BlueprintCallable, Category = ListView, meta = (AllowPrivateAccess = true, DisplayName = "Set List Items", ViewmodelBlueprintWidgetExtension = "EntryViewModel"))
+	UMG_API void BP_SetListItems(const TArray<UObject*>& InListItems);
+}
+
+void UMVVMViewBlueprintListViewBaseExtension::Precompile(UE::MVVM::Compiler::IMVVMBlueprintViewPrecompile* Compiler, UWidgetBlueprintGeneratedClass* Class)
+{
+}
+```