CString转char[]函数

/*  
 
 * 函数名: CString2Char  
 
 * 参数1: CString str                 待转换字符串  
 
 * 参数2: char ch[]                       转换后将要储存的位置  
 
 * 将Unicode下的CString转换为char*  
 
*/  
 
 void CString2Char(CString str, char ch[])   
 
{   
 
    int i;   

    char *tmpch;   
 
    int wLen = WideCharToMultiByte(CP_ACP, 0, str, -1, NULL, 0, NULL, NULL);//得到Char的长度    
 
     tmpch = new char[wLen + 1];                                             //分配变量的地址大小    
 
    WideCharToMultiByte(CP_ACP, 0, str, -1, tmpch, wLen, NULL, NULL);       //将CString转换成char*    
 
         
 
    for(i = 0; tmpch[i] != '\0'; i++) ch[i] = tmpch[i];   
 
    ch[i] = '\0';   
 
 }