1. Add DefinePropertyPage with the GUID constant of the property page as the parameter to the DefinePropertyPages method implementation in the control's implementation for the unit. For example,

procedure TButtonX.DefinePropertyPages(DefinePropertyPage: TDefinePropertyPage);
begin
   DefinePropertyPage(Class_PropertyPage1);
end;

BEGIN_PROPERTY_MAP(TActiveFormXImpl)
// Define property pages here.  Property pages are defined using
// the PROP_PAGE macro with the class id of the page.  For example,
// PROP_PAGE(CLSID_ActiveFormXPage)
PROP_PAGE(CLSID_PropertyPage1)
END_PROPERTY_MAP()

The GUID constant, Class_PropertyPage1, of the property page can be found in the property pages unit. The GUID is defined in the property page's implementation unit .

2. Add the property page unit to the uses clause of the controls implementation unit.