Conversion of character formats in VC tchar char string

 

In vc2005, when setwindowtext is called, an error occurs when char [] is used for the second parameter. We recommend that you use tchar because vc2005 uses Unicode by default.

For Unicode programming, we recommend that you use tchar (16-bit w_char) instead of char. In fact, it is good for Unicode programming. It is a good habit to use tchar. If you want to convert to Unicode, you can use the multibytetowidechar function.

Note the following when writing code: 1: Add _ T or _ text before the string. for example: _ T ("dadad"); 2: replace char with tchar (unsigned char must be removed from unsigned) 3: replace STR function with _ TCS function 4: the printf function family must be changed to wprintf. However, do not use the wprintf function to parse the char type. 5: For string and integer conversions, use _ itot and _ ttoi to convert each other. Do not use atoi or ITOA. In Unicode mode, cstring and wchar_t are common. That is to say, in vs2005, wchar STR = l "string"; cstring str1 = STR; can be compiled, but not in vc6.: String declaration type. Generally, you can use the generic function to enable the program to automatically set according to the configured encoding.

Common MFC Data Types	Maps to ASCII	Map to Unicode	Note
_ Tchar	Char	Wchar_t	_ Tchar is a ing macro. When Unicode is defined, the data type is mapped to wchar_t. If Unicode is not defined, it is mapped to Char.
_ T or _ text	Char constant string	Wchar_t constant string	Features are the same as macros. in ASCII mode, they are ignored, that is, they are deleted by the pre-processor. However, if Unicode is defined, they convert constant strings to the equivalent Unicode.
Lptstr	Char *, lpstr (win32)	Wchar_t *	A portable 32-Bit String pointer. It maps the character type to the type set by the project.
Lpctstr	Const char *, lpcstr (win32)	Const wchar_t *	Portable 32-bit constant string pointer. It maps character type constants to the type set by the project.

2. unicode wchar * To char * cstring STR (wchar *); //////////////////////////////////////// //////////////////////////////////////// //////////////////////////////////////// /// lpcstr     32-bit Pointer to a constant string Lpstr       32-bit Pointer to a string Lpctstr     32-bit Pointer to a constant string. This string can be transplanted to Unicode And DBCS Lptstr     32-bit Pointer to a string. This string can be transplanted to Unicode And DBCS lpwstr     32-bit Pointer to a unicode string Lpcwstr     32-bit Pointer to a unicode String constant L stands for long, P stands for pointer, C stands for constant, W stands for wide, and STR stands for string.