52 lines
1.4 KiB
Markdown
52 lines
1.4 KiB
Markdown
|
# HideThen
|
|||
|
|
|
|||
|
|
- **功能描述：** 隐藏异步蓝图节点的Then引脚
|
|||
|
|
- **使用位置：** UCLASS
|
|||
|
|
- **元数据类型：** bool
|
|||
|
|
- **限制类型：** 蓝图异步节点
|
|||
|
|
- **关联项：** [ExposedAsyncProxy](../ExposedAsyncProxy/ExposedAsyncProxy.md)
|
|||
|
|
|
|||
|
|
在源码中HideThen只在UK2Node_BaseAsyncTask中判断，因此这个标签只作用于蓝图异步节点。
|
|||
|
|
|
|||
|
|
## 测试代码：
|
|||
|
|
|
|||
|
|
```cpp
|
|||
|
|
UCLASS(Blueprintable, BlueprintType,meta = (ExposedAsyncProxy = MyAsyncObject))
|
|||
|
|
class INSIDER_API UMyFunction_Async :public UCancellableAsyncAction
|
|||
|
|
{}
|
|||
|
|
|
|||
|
|
UCLASS(Blueprintable, BlueprintType,meta = (ExposedAsyncProxy = MyAsyncObject,HideThen))
|
|||
|
|
class INSIDER_API UMyFunction_Async :public UCancellableAsyncAction
|
|||
|
|
{}
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
## 使用HideThen前后对比：
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
## 源码位置：
|
|||
|
|
|
|||
|
|
```cpp
|
|||
|
|
void UK2Node_BaseAsyncTask::AllocateDefaultPins()
|
|||
|
|
{
|
|||
|
|
bool bExposeProxy = false;
|
|||
|
|
bool bHideThen = false;
|
|||
|
|
FText ExposeProxyDisplayName;
|
|||
|
|
for (const UStruct* TestStruct = ProxyClass; TestStruct; TestStruct = TestStruct->GetSuperStruct())
|
|||
|
|
{
|
|||
|
|
bExposeProxy |= TestStruct->HasMetaData(TEXT("ExposedAsyncProxy"));
|
|||
|
|
bHideThen |= TestStruct->HasMetaData(TEXT("HideThen"));
|
|||
|
|
if (ExposeProxyDisplayName.IsEmpty())
|
|||
|
|
{
|
|||
|
|
ExposeProxyDisplayName = TestStruct->GetMetaDataText(TEXT("ExposedAsyncProxy"));
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (!bHideThen)
|
|||
|
|
{
|
|||
|
|
CreatePin(EGPD_Output, UEdGraphSchema_K2::PC_Exec, UEdGraphSchema_K2::PN_Then);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
```
|