【UE4学习】22_C++输出字符串及FString字符串转换

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C++输出字符串

输出字符串到output log中

FString filePath
UE_LOG(LogTemp, Log, TEXT("%s"), *filePath);

UE_LOG(LogTemp, Error, TEXT("Hello,World!"));

输出字符串到屏幕上

FString filePath;
GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Green, FString::Printf(TEXT("DLL_Init")));

GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Green, FString::Printf(TEXT("%s"), *filePath));

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字符串转换

Converting FString to FNames

FString TheString = "UE4_C++_IS_Awesome";
FName ConvertedFString = FName(*TheString);

Converting std::string to FString

#include <string>

//....
std::string TestString = "Happy"; 
FString HappyString(TestString.c_str());

Converting FString to std::string

#include <string>

//....
FString UE4Str = "Flowers";
std::string MyStdString(TCHAR_TO_UTF8(*UE4Str));

• 数值转std::to_string
  
  • std::strin