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03-UnrealEngine/Gameplay/UObject/UnrealSpecifiers/Meta/Development/Comment/Comment.md

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+# Comment
+
+- **功能描述：** 用来记录注释的内容
+- **使用位置：** Any
+- **引擎模块：** Development
+- **元数据类型：** string="abc"
+- **常用程度：** ★★★
+
+Comment跟ToolTip不同，后者是用户鼠标悬停上的提示，前者只是简单的代码中的注释的记录。但是一般我们在代码里写上的注释，会自动也加到ToolTip 上，因此我们往往也会看到UI界面上的提示。
+
+但如果不想要ToolTip，想只有Comment，则也可以自己手动在meta里添加。
+
+## 测试代码：
+
+```cpp
+//(BlueprintType = true, Comment = //This is a comment on class, IncludePath = Property/Development/MyProperty_Development.h, ModuleRelativePath = Property/Development/MyProperty_Development.h, ToolTip = This is a comment on class)
+
+//This is a comment on class
+UCLASS(BlueprintType)
+class INSIDER_API UMyProperty_Development :public UObject
+{
+	GENERATED_BODY()
+public:
+	//(Comment = //This is a comment on function, ModuleRelativePath = Property/Development/MyProperty_Development.h, ToolTip = This is a comment on function)
+	
+	//This is a comment on function
+	UFUNCTION(BlueprintCallable)
+	int32 MyFunc(FString str){return 0;}
+
+	//	(Category = MyProperty_Development, Comment = //This is a comment on property, ModuleRelativePath = Property/Development/MyProperty_Development.h, ToolTip = This is a comment on property)
+	 
+	//This is a comment on property
+	UPROPERTY(EditAnywhere, BlueprintReadWrite)
+	int32 MyProperty = 123;
+
+	//(Category = MyProperty_Development, Comment = This is my other property., ModuleRelativePath = Property/Development/MyProperty_Development.h)
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite,meta=(Comment="This is my other property."))
+	int32 MyProperty_WithComment = 123;
+};
+
+```
+
+## 测试结果：
+
+MyProperty_WithComment是单独只加的Comment，就没有了鼠标悬停效果。
+
+![Comment](Comment.gif)