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[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
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.
| Return code | Description |
|---|---|
|
Success. |
|
NULL pointer argument. |
|
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
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|