1.4 KiB
1.4 KiB
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
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：
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：
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);
}
}