Symbian Very Handy and Useful Descriptor Conversion Code Snippets

Any Symbian Developer would always had his fight with understanding Descriptors and using them. Here is a few Descriptor Copying and Conversion code snippets for your Reference.

Just Copying from 8 bit to 16 bit Symbian Descriptor

HBufC16* buf16 = HBufC16::NewL( buf8->Length() );
buf16->Des().Copy( *buf8);

Just Copying from 16 bit to 8 bit

HBufC8* buf8 = HBufC8::NewL( buf16->Length() );
buf8->Des().Copy( *buf16);

Descriptor Conversion without Data Modification (Just casting)

8-bit to 16-bit
TPtrC16 ptr16(reinterpret_cast(iBuf8.Ptr()),(iBuf8.Size()/2));
iBuf16=ptr16;

16-bit to 8-bit
TPtrC8 ptr8(reinterpret_cast(iBuf16.Ptr()),(iBuf16.Size()*2));
iBuf8=ptr8;

Descriptor Conversion in Which Data is Modified (Convert each character)

Link against charconv.lib

#include "utf.h"

8-bit to 16-bit
CnvUtfConverter::ConvertToUnicodeFromUtf8(iBuf16,iBuf8);

16-bit to 8-bit
CnvUtfConverter::ConvertFromUnicodeToUtf8(iBuf8,iBuf16);