title	ATL String and Text Classes | Microsoft Docs
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String and Text Classes

These classes provide support for strings and text string conversions.

• CA2AEX This class is used by the string conversion macros CA2TEX and CT2AEX, and the typedef CA2A.

• CA2CAEX This class is used by string conversion macros CA2CTEX and CT2CAEX, and the typedef CA2CA.

• CA2WEX This class is used by the string conversion macros CA2TEX, CA2CTEX, CT2WEX, and CT2CWEX, and the typedef CA2W.

• CW2AEX This class is used by the string conversion macros CT2AEX, CW2TEX, CW2CTEX, and CT2CAEX, and the typedef CW2A.

• CW2CWEX This class is used by the string conversion macros CW2CTEX and CT2CWEX, and the typedef CW2CW.

• CW2WEX This class is used by the string conversion macros CW2TEX and CT2WEX, and the typedef CW2W.

• CComBSTR This class is a wrapper for BSTRs.

• _U_STRINGorID This argument adapter class allows either resource names (LPCTSTRs) or resource IDs (UINTs) to be passed to a function without requiring the caller to convert the ID to a string using the MAKEINTRESOURCE macro.

See Also

Class Overview
ATL and MFC String Conversion Macros