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CBasePropertyPage::SetObjects

  • Articolo
 
Microsoft DirectShow 9.0

CBasePropertyPage::SetObjects

The SetObjects method provides IUnknown pointers for the objects associated with the property page. This method implements the IPropertyPage::SetObjects method.

Syntax

  HRESULT SetObjects(
    ULONG cObjects,
    LPUNKNOWN *ppUnk
);

Parameters

cObjects

Specifies the number of IUnknown pointers in the array specified by ppUnk.

ppUnk

Specifies an array of IUnknown pointers.

Return Value

Returns an HRESULT value. Possible values include the following.

Value Description
S_OK Success.
E_POINTER NULL pointer argument.
E_UNEXPECTED Unexpected failure.

Remarks

Although ppUnk specifies an array of IUnknown pointers, the CBasePropertyPage class is designed only to support one associated object. If cObjects is greater than 1, the method returns E_UNEXPECTED.

If cObjects equals 1, this method calls the CBasePropertyPage::OnConnect method. If cObjects equals 0, this method calls the CBasePropertyPage::OnDisconnect method. The derived class should override both of those methods; for details, see the remarks for those methods.

Requirements

**  Header:** Declared in Cprop.h; include Streams.h.

**  Library:** Use Strmbase.lib (retail builds) or Strmbasd.lib (debug builds).

See Also