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03-UnrealEngine/Gameplay/UObject/UnrealSpecifiers/Meta/DetailsPanel/DisplayPriority/DisplayPriority.md

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+# DisplayPriority
+
+- **功能描述：** 指定本属性在细节面板的显示顺序优先级，越小的优先级越高。
+- **使用位置：** UPROPERTY
+- **引擎模块：** DetailsPanel
+- **元数据类型：** int32
+- **常用程度：** ★★★
+
+指定本属性在细节面板的显示顺序优先级，越小的优先级越高。
+
+- 如果有DisplayAfter的设置，则DisplayAfter的优先级更高。
+- 同样的限制得是在同Category里。
+
+## 测试代码：
+
+```cpp
+public:
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = PriorityTest, meta = (DisplayPriority = 3))
+	int32 MyInt_P3 = 123;
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = PriorityTest, meta = (DisplayPriority = 1))
+	int32 MyInt_P1 = 123;
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = PriorityTest, meta = (DisplayPriority = 2))
+	int32 MyInt_P2 = 123;
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = PriorityTest, meta = (DisplayPriority = 4,DisplayAfter="MyInt_P1"))
+	int32 MyInt_P4 = 123;
+```
+
+## 测试结果：
+
+P4即使优先级比较低，但因为DisplayAfter也仍然排在了P1之后。
+
+![Untitled](Untitled.png)
+
+## 原理：
+
+排序的逻辑在这个函数内，自行查看就好。一个简单的插入排序算法。
+
+```cpp
+void PropertyEditorHelpers::OrderPropertiesFromMetadata(TArray<FProperty*>& Properties)
+{}
+```