以下程序在VS2005中运行为什么会出现错误（最后的红字）?

CDlgpassword  dlgpass;
    if(dlgpass.DoModal()==IDOK)
    {
        if(strcmp(dlgpass.m_password, "12a"))
        {
            AfxMessageBox("口令错误，确定后将退出程序.",MB_OK|MB_ICONERROR);
            return FALSE;
        }
    }
    else
        return FALSE;
1>e:\新建文件夹\21\21\21.cpp(65) : error C2664: 'strcmp' : cannot convert parameter 1 from 'CEdit' to 'const char *'
1>        No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called