剛封裝了一個C的方法,碰到最多的就是char 和Wchar的轉化問題. 找了些資料:

1.頭文件中要定義宏;

　　#define UNICODE #define _UNICODE
2.char轉換成wchar

const char *pFilePathName = "c:\\aa.dll ";

int nLen = strlen(pFilePathName) + 1;

int nwLen = MultiByteToWideChar(CP_ACP, 0, pFilePathName, nLen, NULL, 0);
TCHAR lpszFile[256];

MultiByteToWideChar(CP_ACP, 0, pFilePathName, nLen, lpszFile, nwLen);
3.wchar轉換成char

char *pFilePathName;

TCHAR lpszFile[256];

_tcscpy(lpszFile, _T( "c:\\aa.dll "));
int nLen = wcslen(wstr)+1;

WideCharToMultiByte(CP_ACP, 0, lpszFile, nLen, pFilePathName, 2*nLen, NULL, NULL);

一個完整的例子(網上找的阿,要Ws2_32.lib)

1.#include <windows.h>  
2.#include <stdio.h>  
3.  
4.//function: charTowchar  
5.//purpose:char to WCHAR 、wchar_t、LPWSTR etc  
6.void charTowchar(const char *chr, wchar_t *wchar, int size)  
7.{     
8.    MultiByteToWideChar( CP_ACP, 0, chr,  
9.        strlen(chr)+1, wchar, size/sizeof(wchar[0]) );  
10.}  
11.  
12.//function: wcharTochar  
13.//purpose:WCHAR 、wchar_t、LPWSTR to char  
14.void wcharTochar(const wchar_t *wchar, char *chr, int length)  
15.{  
16.    WideCharToMultiByte( CP_ACP, 0, wchar, -1,  
17.        chr, length, NULL, NULL );  
18.}  
19.  
20.int main (void)  
21.{  
22.    char     chr[128];  
23.    wchar_t  *wchar = L"陳鴻欽";  
24.      
25.  
26.    //wchar_t to char  
27.    wcharTochar(wchar, chr, sizeof(chr));  
28.    printf("char is %s\n", chr);  
29.  
30.    //char to wchar_t  
31.    wchar = (wchar_t *)malloc(sizeof(wchar_t) * 64);  
32.    charTowchar(chr, wchar, sizeof(wchar_t) * 64);  
33.      
34.    wprintf_s(L"%s\n", wchar);//  
35.    getchar();  
36.  
37.    return 0;  
38.}  

　　另一個宏:

#include "atlconv.h" 

void func()
 
{
 
 USES_CONVERSION; 

char *test = "i am a sucker";
 
 WCHAR *conv = A2W(strPic1) ;
 
}

　　

總結

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