2.0 KiB
2.0 KiB
BlueprintGetter
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功能描述： 为属性定义一个自定义的Get函数来读取。
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元数据类型： string="abc"
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引擎模块： Blueprint
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作用机制： 在PropertyFlags中加入CPF_BlueprintReadOnly、CPF_BlueprintVisible，在Meta中加入BlueprintGetter
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常用程度： ★★★
为属性定义一个自定义的Get函数来读取。 如果没有设置BlueprintSetter或BlueprintReadWrite，则会默认设置BlueprintReadOnly，这个属性变成只读的。
示例代码：
public:
//(BlueprintGetter = , Category = Blueprint, ModuleRelativePath = Property/MyProperty_Test.h)
UFUNCTION(BlueprintGetter, Category = Blueprint) //or BlueprintPure
int32 MyInt_Getter()const { return MyInt_WithGetter * 2; }
//(BlueprintSetter = , Category = Blueprint, ModuleRelativePath = Property/MyProperty_Test.h)
UFUNCTION(BlueprintSetter, Category = Blueprint) //or BlueprintCallable
void MyInt_Setter(int NewValue) { MyInt_WithSetter = NewValue / 4; }
private:
//(BlueprintGetter = MyInt_Getter, Category = Blueprint, ModuleRelativePath = Property/MyProperty_Test.h)
//PropertyFlags: CPF_BlueprintVisible | CPF_BlueprintReadOnly | CPF_ZeroConstructor | CPF_IsPlainOldData | CPF_NoDestructor | CPF_HasGetValueTypeHash | CPF_NativeAccessSpecifierPrivate
UPROPERTY(BlueprintGetter = MyInt_Getter, Category = Blueprint)
int32 MyInt_WithGetter = 123;
//(BlueprintSetter = MyInt_Setter, Category = Blueprint, ModuleRelativePath = Property/MyProperty_Test.h)
//PropertyFlags: CPF_BlueprintVisible | CPF_ZeroConstructor | CPF_IsPlainOldData | CPF_NoDestructor | CPF_HasGetValueTypeHash | CPF_NativeAccessSpecifierPrivate
UPROPERTY(BlueprintSetter = MyInt_Setter, Category = Blueprint)
int32 MyInt_WithSetter = 123;
示例效果：
可见MyInt_WithGetter是只读的。
而MyInt_WithSetter 是可读写的。
