前辈帮忙看下 这个字符转双精度数错在了哪里？有点急！！
这是我摘录出来的VC6.0下CString mstr;
mstr+='7';
double m_num1=wcstod(mstr,NULL);
错误为：cannot convert parameter 1 from 'class CString' to 'const unsigned short *'
No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
