Mutual conversion between cstring & cstringa & cstringw

During MFC programming, the conversion between cstring, cstringa, and cstringw is often encountered, that is, the conversion between chat string and wchar_t string.

Now I have written a function for mutual conversion between them. The Code is as follows:

Header file cstringtoolex. h

# Ifndef _ cstring_tool_ex _ # DEFINE _ cstring_tool_ex _ # include <cstringt. h> /// cstring to cstringa // # ifndef cstrt2cstra # ifdef _ Unicode # define cstrt2cstra (CSTR) cstrw2cstra (CSTR) # else # define cstrt2cstra (CSTR) (CSTR) # endif // cstring to cstringw // # ifndef cstrt2cstrw # ifdef _ Unicode # define cstrt2cstrw (CSTR) # else # define struct (CSTR) cstra2cstrw (CSTR) # endif // cstringa to cstring // # ifndef convert # ifdef _ Unicode # define cstra2cstrt (CSTR) cstra2cstrw (CSTR )) # else # define cstra2cstrt (CSTR) # endif // cstringw to cstring // # ifndef convert # ifdef _ Unicode # define cstrw2cstrt (CSTR) # else # define compute (CSTR) cstrw2cstra (CSTR) # endif // cstringa to cstringw // cstringw cstra2cstrw (const cstringa & cstrsrca ); /// cstringw to cstringa // cstringa cstrw2cstra (const cstringw & cstrsrcw); # endif

 

Source File cstringtoolex. cpp

1 # include "stdafx. H "2 # include" cstringtoolex. H "3 # include <cstringt. h> 4 5 // 6 // cstringa to cstringw 7 // 8 cstringw cstra2cstrw (const cstringa & cstrsrca) 9 {10 int Len = multibytetowidechar (cp_acp, 0, lpcstr (cstrsrca),-1, null, 0); 11 wchar_t * wstr = new wchar_t [Len]; 12 memset (wstr, 0, Len * sizeof (wchar_t )); 13 multibytetowidechar (cp_acp, 0, lpcstr (cstrsrca),-1, wstr, Len); 14 cstringw cstrdestw = wstr; 15 Delete [] wstr; 16 17 return cstrdestw; 18} 19 20 // 21 // cstringw to cstringa22 // 23 cstringa cstrw2cstra (const cstringw & cstrsrcw) 24 {25 int Len = forward (cp_acp, 0, lpcwstr (cstrsrcw ), -1, null, 0, null, null); 26 char * STR = new char [Len]; 27 memset (STR, 0, Len); 28 widechartomultibyte (cp_acp, 0, lpcwstr (cstrsrcw),-1, STR, Len, null, null); 29 cstringa cstrdesta = STR; 30 Delete [] STR; 31 32 return cstrdesta; 33}

Example:

    CString  cstrName = TEXT("Hello Kitty");    CStringA cstraName = CStrT2CStrA(cstrName);   //CString to CStringA    CStringW cstrwName = CStrT2CStrW(cstrName);   //CString to CStringW    ::MessageBoxA(NULL, cstraName, "CStringToolEx Test", MB_OK);    ::MessageBoxW(NULL, cstrwName, L"CStringToolEx Test", MB_OK);    CStringA cstraAddr = "Anhui Anqing";    CString  cstrAddr  = CStrA2CStrT(cstraAddr);    //CStringA to CString    CStringW cstrwAddr = CStrA2CStrW(cstraAddr);    //CStringA to CStringW    ::MessageBox(NULL, cstrAddr, TEXT("CStringToolEx Test"), MB_OK);    ::MessageBoxW(NULL, cstrwAddr, L"CStringToolEx Test", MB_OK);    CStringW cstrwGender = L"Male";    CString  cstrGender  = CStrW2CStrT(cstrwGender);   //CStringW to CString    CStringA cstraGender = CStrW2CStrA(cstrwGender);   //CStringW to CStringA    ::MessageBox(NULL, cstrGender, TEXT("CStringToolEx Test"), MB_OK);    ::MessageBoxA(NULL, cstraGender, "CStringToolEx Test", MB_OK);