C++多字節與寬字節間的轉換(wchar_t與char轉換)

最近在C++編程中經常遇到需要多字節字符與寬字節字符相互轉換的問題，一直自己貼那幾句代碼。覺得麻煩，於是就自己寫了一個類來封裝wchar_t與char類型間的轉換，

其他的，諸如：CString\ LPWSTR\TCHAR CHAR\LPSTR之間也是一樣用

1. #include <iostream>
2. using namespace std;
3. class CUser
4. {
5. public:
6. CUser();
7. virtual~ CUser();
8. char* WcharToChar(wchar_t* wc);//寬字節轉單字節
9. wchar_t* CharToWchar(char* c); //單字節轉寬字節
10. void Release();//釋放資源
11. private:
12. char* m_char;
13. wchar_t* m_wchar;
14. };
15. /////////////////////////////////////////////////////////////////////////////////////
16. /*字符類型 wchar_t char
17. /*獲取字符長度 wcslen() strlen()
18. /*連接兩個字符串 wcscat() strcpy()
19. /*復制字符串 wcscpy() strcpy()
20. /*比較兩個字符串 wcscmp() strcmp()
21. /*具體參數詳見www.linuxidc.com*/
22. ////////////////////////////////////////////////////////////////////////////////////
23. CUser::CUser()
24. :m_char(NULL)
25. ,m_wchar(NULL)
26. {
27. }
28. CUser::~CUser()
29. {
30. Release();
31. }
32. char* CUser::WcharToChar(wchar_t* wc)
33. {
34. Release();
35. int len= WideCharToMultiByte(CP_ACP,0,wc,wcslen(wc),NULL,0,NULL,NULL);
36. m_char=new char[len+1];
37. WideCharToMultiByte(CP_ACP,0,wc,wcslen(wc),m_char,len,NULL,NULL);
38. m_char[len]='\0';
39. return m_char;
40. }
41. wchar_t* CUser::CharToWchar(char* c)
42. {
43. Release();
44. int len = MultiByteToWideChar(CP_ACP,0,c,strlen(c),NULL,0);
45. m_wchar=new wchar_t[len+1];
46. MultiByteToWideChar(CP_ACP,0,c,strlen(c),m_wchar,len);
47. m_wchar[len]='\0';
48. return m_wchar;
49. }
50. void CUser::Release()
51. {
52. if(m_char)
53. {
54. delete m_char;
55. m_char=NULL;
56. }
57. if(m_wchar)
58. {
59. delete m_wchar;
60. m_wchar=NULL;
61. }
62. }

使用的時候非常簡單了：

1. WCHAR* wc=findData.cFileName;
2. CUser u;
3. char* c=u.WcharToChar(wc);
4. cout<<c<<endl;

1. CUser u;
2. char* pBuffer=u.WcharToChar(szFullPath);
3. cout<<totalNum<<" "<<pBuffer<<endl;