CString LPCTSTR char* 之间的转换

char str[1024];

CString cstr;

CString --> LPCTSTR: (LPCTSTR)cstr;

CString --> char *:

    DWORD dwMinSize;

    dwMinSize = WideCharToMultiByte(CP_ACP, NULL, (LPCTSTR)cstr, -1, NULL, 0, NULL, FALSE); //计算长度

    WideCharToMultiByte(CP_OEMCP, NULL, (LPCTSTR)cstr, -1, str, dwMinSize, NULL, FALSE);