TDesC8与TDesC16之间的互转 ---转杨芹勍的博客

1、使用Copy

_LIT8(KTestStr, "This is a string");TBufC8<50> buf(KTestStr);TBuf<100> newBuf;newBuf.Copy(buf);TBuf8<50> newBuf1;newBuf1.Copy(newBuf);

 

2:使用CCnvCharacterSetConverter类

_LIT8(KTestStr, "This is a String"n");TBufC8<50> buf(KTestStr);CCnvCharacterSetConverter* conv = CCnvCharacterSetConverter::NewL();CleanupStack::PushL(conv);RFs fs;User::LeaveIfError(fs.Connect());if (conv->PrepareToConvertToOrFromL(KCharacterSetIdentifierAscii, fs) != CCnvCharacterSetConverter::EAvailable){User::Leave(KErrNotSupported);}HBufC* str = HBufC::NewL(buf.Length());CleanupStack::PushL(str);TPtr ptr = str->Des();TInt state = CCnvCharacterSetConverter::KStateDefault;if (conv->ConvertToUnicode(ptr, buf, state) == CCnvCharacterSetConverter::EErrorIllFormedInput){User::Leave(KErrArgument);}fs.Close();console->Write(ptr);CleanupStack::PopAndDestroy(2); // str, conv