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关于 UE4 的字符串的类型转换

1. int32 与 FString 的互相转换

1     // int32 -> FString
2     int32 Nums = 123456789;
3     const FString Int32AToFString = FString::FromInt(Nums);
4     UE_LOG(LogTemp, Display, TEXT("Int32AToFString: %s"), *Int32AToFString);
5 
6     // FString -> int32
7     const FString FStringA = TEXT("123456789");
8     int32 FStringAToInt32 = FCString::Atoi(*FStringA);
9     UE_LOG(LogTemp, Display, TEXT("FStringAToInt32: %d"), FStringAToInt32);

　　

 

2.  int32 与 FString 转换 “3位分结” 计数法

1     // int32 -> FormatAsNumber
2     const int32 Nums = 123456789;
3     FString Int32AToFormatAsNumber = FString::FormatAsNumber(Nums);
4     UE_LOG(LogTemp, Display, TEXT("Int32AToFormatAsNumber: %s"), *Int32AToFormatAsNumber);
5     // FString -> FormatAsNumber
6     const FString FStringA = TEXT("123456789");
7     FString FStringAToFormatAsNumber = FString::FormatAsNumber(FCString::Atoi(*FStringA));
8     UE_LOG(LogTemp, Display, TEXT("FStringAToFormatAsNumber: %s"), *FStringAToFormatAsNumber);

　　

 

3. FString 与 float 的互相转换

1     // FString -> Float
2     const FString StringA = TEXT("3.1415926");
3     float StringToFloat = FCString::Atof(*StringA);
4     UE_LOG(LogTemp, Display, TEXT("StringToFloat: %.5f"), StringToFloat);
5 
6     // Float -> FString
7     const float NumA = 3.1415926;
8     const FString FloatToString = FString::SanitizeFloat(NumA);
9     UE_LOG(LogTemp, Display, TEXT("FloatToString: %s"), *FloatToString);

　　

 

4. FString 与 FName 的互相转换

1     // FName -> FString
2     FName FNameA("FNameA");
3     FString FNameToFString = FNameA.ToString();
4     UE_LOG(LogTemp, Display, TEXT("FNameToFString: %s"), *FNameToFString);
5     // FString -> FName
6     FString FStringA("FStringA");
7     FName FStringToFName = *FStringA;
8     UE_LOG(LogTemp, Display, TEXT("FNameToFString: %s"), *FStringToFName.ToString());

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5. FString 与 FText 的互相转换

 1     //FString -> FText
 2     FString FStringA("FStringA");
 3     FText FStringToFText = FText::FromString(FStringA);
 4     UE_LOG(LogTemp, Display, TEXT("FStringToFText: %s"), *FStringToFText.ToString());
 5     //FText -> FString
 6     FText TxtA = FText::AsNumber(1.4f);
 7     FText TxtB = FText::FromString(TEXT("ABCDE"));        //4.26以前的版本直接传入 TEXT("") 会导致崩溃
 8     FText TxtC = FText::FromString(FString("FIJKL"));
 9     FString TxtAToFStringA(TxtA.ToString());
10     FString TxtBToFStringB(TxtB.ToString());
11     FString TxtCToFStringC(TxtC.ToString());
12     UE_LOG(LogTemp, Display, TEXT("TxtAToFStringA: %s"), *TxtAToFStringA);
13     UE_LOG(LogTemp, Display, TEXT("TxtBToFStringB: %s"), *TxtBToFStringB);
14     UE_LOG(LogTemp, Display, TEXT("TxtCToFStringC: %s"), *TxtCToFStringC);

　　

 

6. TCHAR 与 ANSI_TO_TCHAR 转换

 1 // 虚幻使用的字符类型为 TCHAR，采用 UTF-16 的编码格式。通过宏 ANSI_TO_TCHAR 转换将 ANSIC 码转换为虚幻的 TCHAR 类型
 2     TCHAR* charsA = ANSI_TO_TCHAR("123");
 3     // 通过宏 TCHAR_TO_ANSI 将虚幻的 TCHAR 编码转为 ANSIC 码，注意：虚幻向外的输出一定只能是 TCHAR 类型的
 4     ANSICHAR* ansiString = TCHAR_TO_ANSI(charsA);
 5     // 对于 UTF-8 可以使用宏来进行来回转换
 6     ANSICHAR* utf8String = TCHAR_TO_UTF8(charsA);
 7     TCHAR* charsB = UTF8_TO_TCHAR(utf8String);
 8     UE_LOG(LogTemp, Display, TEXT("%s"), charsA);
 9     UE_LOG(LogTemp, Display, TEXT("%s"), ANSI_TO_TCHAR("234"));
10     UE_LOG(LogTemp, Display, TEXT("%s"), TEXT("345"));
　　
 
 

7. TCHAR* 与 FString 的隐式转换

1  // FString -> TCHAR* (TCHAR*与FString基本都能自动隐式转换)
2  const FString FStringToTCHAR(TEXT("FStringToTCHAR"));
3  UE_LOG(LogTemp, Display, TEXT("FStringToTCHARA: %s"), *FStringToTCHAR);
4  const TCHAR* TcharToString = *FStringToTCHAR;
5  UE_LOG(LogTemp, Display, TEXT("FStringToTCHARA->TcharToString: %s"), TcharToString);

　　

 

posted @ 2022-08-11 20:07  索智源  阅读(1577)  评论(0)    收藏  举报