If your using mfc arhitecture then,
1)As you says "CPagerCtrl" used or not then, it is not member function of microsoft foundation class so as usual nobody using this.
2)If you buy any library then may be changce of this class belong this library.
Ho to verify,
1)Threre is always good practise by every company that they mentioned copyright@ and companyname at the header of .cpp file.with that you can seen the company.
Nd if there is microsoft as company then i need rest.
2)And there may be not company name ,but author name should there.
3)Sum time actually you forgot when you guys develope a class.
May be this class belong to you company project only.
else post code of file
i will give you more infomation.
And mention your visual studio version i am working on visual studio 2010.
you may use microsort visual studio 2012 and microsoft may introduce it on studio 2012
Thanks and regard
waste of life