diff -r 89d6a7a84779 -r 25a17d01db0c Symbian3/PDK/Source/GUID-7A9FBE3A-D75E-59FC-9ACD-196670F0F9C8.dita --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Symbian3/PDK/Source/GUID-7A9FBE3A-D75E-59FC-9ACD-196670F0F9C8.dita Fri Jan 22 18:26:19 2010 +0000 @@ -0,0 +1,43 @@ + + + + + +Constant +literal textConstant literals are objects containing constant literal text +which can be placed by the compiler into read-only memory. +

They are also referred to as literal descriptors. They are not true +descriptors, they are not derived from the descriptor classes, but +they do have conversion operators so that they can be passed to any function +which takes a const TDesC16& type, a const TDesC8& type +or a const TDesC& type.

+

Constant literal descriptors are constructed using the macros:

+ +

The _L16, _L8 and _L macros, +which perform a similar function, are retained for compatibility purposes, +but all production code that requires literal text should use literal descriptors.

+
_LIT16

This macro constructs the 16 bit variant +constant literal descriptor for Unicode strings. The literal descriptor object +is an instance of a TLitC16 class and the macro generates const +static TLitC16 in the C++ code.

+
_LIT8

This macro constructs the 8 bit variant constant +literal descriptor for non-Unicode strings. The literal descriptor object +is an instance of a TLitC8 class and the macro generates const +static TLitC8 in the C++ code.

+
_LIT

This macro constructs the build independent +type constant literal descriptor. The literal descriptor object is an instance +of a TLitC class and the macro generates const static + TLitC in the C++ code. By using this type, the appropriate +variant, either 16 bit or 8 bit is selected at build time depending on whether +the _UNICODE macro has been defined or not.

+
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