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03-UnrealEngine/Gameplay/UObject/UnrealSpecifiers/Specifier/UPROPERTY/DetaisPanel/SimpleDisplay/SimpleDisplay.md

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+# SimpleDisplay
+
+- **功能描述：** 在细节面板中直接可见，不折叠到高级中。
+- **元数据类型：** bool
+- **引擎模块：** DetailsPanel, Editor
+- **作用机制：** 在PropertyFlags中加入[CPF_SimpleDisplay](../../../../Flags/EPropertyFlags/CPF_SimpleDisplay.md)
+- **常用程度：** ★★★
+
+在细节面板中直接可见，不折叠到高级中。
+
+默认情况下本身就是不折叠，但可以用来覆盖掉类上的AdvancedClassDisplay的设置。具体可参见AdvancedClassDisplay的代码和效果。
+
+## 示例代码：
+
+```cpp
+UCLASS(Blueprintable, BlueprintType)
+class INSIDER_API UMyProperty_Test :public UObject
+{
+	//PropertyFlags:	CPF_Edit | CPF_ZeroConstructor | CPF_IsPlainOldData | CPF_NoDestructor | CPF_SimpleDisplay | CPF_HasGetValueTypeHash | CPF_NativeAccessSpecifierPublic 
+	UPROPERTY(EditAnywhere, SimpleDisplay, Category = Display)
+		int32 MyInt_SimpleDisplay = 123;
+
+	//PropertyFlags:	CPF_Edit | CPF_ZeroConstructor | CPF_IsPlainOldData | CPF_NoDestructor | CPF_AdvancedDisplay | CPF_HasGetValueTypeHash | CPF_NativeAccessSpecifierPublic 
+	UPROPERTY(EditAnywhere, AdvancedDisplay, Category = Display)
+		int32 MyInt_AdvancedDisplay = 123;
+}
+```
+
+## 示例效果：
+
+![Untitled](Untitled.png)
+
+## 原理：
+
+如果有CPF_SimpleDisplay，则bAdvanced =false
+
+```cpp
+void FPropertyNode::InitNode(const FPropertyNodeInitParams& InitParams)
+{
+	// Property is advanced if it is marked advanced or the entire class is advanced and the property not marked as simple
+	static const FName Name_AdvancedClassDisplay("AdvancedClassDisplay");
+	bool bAdvanced = Property.IsValid() ? ( Property->HasAnyPropertyFlags(CPF_AdvancedDisplay) || ( !Property->HasAnyPropertyFlags( CPF_SimpleDisplay ) && Property->GetOwnerClass() && Property->GetOwnerClass()->GetBoolMetaData(Name_AdvancedClassDisplay) ) ) : false;
+
+}
+```