89 lines
2.3 KiB
Markdown
89 lines
2.3 KiB
Markdown
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# ScriptNoExport
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- **功能描述：** 不导出该函数或属性到脚本。
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- **使用位置：** UFUNCTION, UPROPERTY
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- **引擎模块：** Script
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- **元数据类型：** bool
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- **常用程度：** ★★★
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不导出该函数或属性到脚本。
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## 测试代码：
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```cpp
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UCLASS(Blueprintable, BlueprintType, meta = (ScriptName = "MyPythonLib"))
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class INSIDER_API UMyPythonTestLibary :public UBlueprintFunctionLibrary
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{
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GENERATED_BODY()
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public:
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UFUNCTION(BlueprintCallable)
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static void MyScriptFunc_None();
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UFUNCTION(BlueprintCallable, meta = (ScriptNoExport))
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static void MyScriptFunc_NoExport();
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public:
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UPROPERTY(BlueprintReadWrite, EditAnywhere)
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float MyFloat = 123.f;
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UPROPERTY(BlueprintReadWrite, EditAnywhere, meta = (ScriptNoExport))
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float MyFloat_NoExport = 123.f;
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};
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```
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## 测试效果py代码：
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可见默认的函数和属性都会导出到脚本里。而MyScriptFunc_NoExport和MyFloat_NoExport在py里并没有。
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```cpp
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class MyPythonLib(BlueprintFunctionLibrary):
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r"""
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My Python Test Libary
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**C++ Source:**
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- **Module**: Insider
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- **File**: MyPythonTest.h
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"""
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@property
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def my_float(self) -> float:
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r"""
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(float): [Read-Write]
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"""
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...
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@my_float.setter
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def my_float(self, value: float) -> None:
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...
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@classmethod
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def my_script_func_none(cls) -> None:
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r"""
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X.my_script_func_none() -> None
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My Script Func None
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"""
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...
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```
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## 原理：
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根据这个ScriptNoExport来判断一个属性或函数是否导出。
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```cpp
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bool IsScriptExposedProperty(const FProperty* InProp)
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{
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return !InProp->HasMetaData(ScriptNoExportMetaDataKey)
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&& InProp->HasAnyPropertyFlags(CPF_BlueprintVisible | CPF_BlueprintAssignable);
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}
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bool IsScriptExposedFunction(const UFunction* InFunc)
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{
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return !InFunc->HasMetaData(ScriptNoExportMetaDataKey)
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&& InFunc->HasAnyFunctionFlags(FUNC_BlueprintCallable | FUNC_BlueprintEvent)
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&& !InFunc->HasMetaData(BlueprintGetterMetaDataKey)
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&& !InFunc->HasMetaData(BlueprintSetterMetaDataKey)
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&& !InFunc->HasMetaData(BlueprintInternalUseOnlyMetaDataKey)
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&& !InFunc->HasMetaData(CustomThunkMetaDataKey)
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&& !InFunc->HasMetaData(NativeBreakFuncMetaDataKey)
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&& !InFunc->HasMetaData(NativeMakeFuncMetaDataKey);
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}
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```
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