Help with dlg

Hi,

I'd like to work on this item "Ability to search a database for objects with
a specific name.".
I've took frmReport.cpp as template for the Search Object UI. I've created
frm/frmSearchObject.cpp
include/frm/frmSearchObject.h
ui/frmSearchObject.xrc
added #include "frm/frmSearchObject.h" to include/precomp.h

I'm getting this error when building the project.

Error 2 error LNK2019: unresolved external symbol "private: void __thiscall
frmSearchObject::OnChange(class wxCommandEvent &)"
(?OnChange(at)frmSearchObject@@AAEXAAVwxCommandEvent@@@Z) referenced in
function "void __cdecl `dynamic initializer for 'private: static struct
wxEventTableEntry const * const
frmSearchObject::sm_eventTableEntries''(void)"
(??__E?sm_eventTableEntries(at)frmSearchObject@@0QBUwxEventTableEntry@@B@
@YAXXZ) C:\development\pgadmin3\pgadmin\frmSearchObject.obj pgAdmin3

Is there another step to take when adding forms to the project?

Regards,
Jasmin