Specifies in dispID the property's control on the property page to receive the focus when the page is activated.
HRESULT EditProperty(
  DISPID dispID  //Dispatch identifier for property
);
 This method supports the standard return value E_INVALIDARG, as well as the following:
If this method is called before a page is activated, the page should store the property and set the focus to it in the next call to IPropertyPage::Activate. If the page is already active, IPropertyPage2::EditProperty should set the focus to the specific property field.
  Windows NT: Use version 4.0 or later.
  Windows: Use Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in ocidl.h.