Windows style and C/C ++ style: Unicode vs _ Unicode and text () vs _ T ()

From: http://www.mouseos.com/win64/TEXT_T.html

For programming on Windows, strings are often used:

1. Text ()Macro
2. _ T ()Macro

These two macros are used to classify string constants. In the following code:

Lptstr lpstra =Text("Hello ");

Lptstr lpstrb =_ T("Hello ");

UseText ()And_ T ()The results are the same.

However, they represent two different programming styles:

1. Windows programming style
2. C/C ++ programming style

The typical meanings of these two styles are:

_ Tchar * Buf = _ T ("hello ");

Or

Lptstr lpbuf = text ("hello ");

Text ()Macro header files defined in WindowsWinnt. h,_ T ()Macro defines the header file of visual VC/C ++Tchar. hTherefore, text () represents the windows programming style, and _ T () represents the C/C ++ style.

InWinnt. hIn the header file, useUnicodeDefinition:

   1: #ifdef UNICODE

   2: ... ...

   3: #define __TEXT(quote) L##quote 

   4: /* for UNICODE */

   5: ... ...

   6: #else

   7: ... ...

   8: #define __TEXT(quote) quote 

   9: /* for ANSI */

  10: ... ...

  11: #endif

  12: #define TEXT(quote) __TEXT(quote)

Text ()Unicode characters are used when Unicode is defined. Otherwise, ANSI characters are used.

InTchar. hIn the header file, use_ UncodeDefinition:

   1: #ifdef _UNICODE

   2: ... ...

   3: #define __T(x) L##x 

   4: /* for UNICODE */

   5: ... ...

   6: #else

   7: ... ...

   8: #define __T(x) x 

   9: /* for ANSI */

  10: ... ...

  11: #endif

  12: #define _T(x) __T(x)

In programming, you should always maintain your programming style,SuggestionsYouDo not mixText () and _ T () macros, although the results are the same.

However, for programming on windows, I suggest you alwaysMaintain the windows programming styleTo maintain consistency with the system.

Therefore, we recommend that you useText ()Macro.