CBaseControlWindow.get_Owner method

Article
07/27/2023

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 get_Owner method retrieves the current window owner.

Syntax

HRESULT get_Owner(
   OAHWND *Owner
);

Parameters

Owner: Pointer to the window owner.

Return value

Returns an HRESULT value.

Remarks

The video window can play back within a document environment. To do this, the window must be made a child of another window (so that it is clipped and moved appropriately). This property allows the owner of the window to be set and retrieved. When the window is owned by another window, it simply calls the Microsoft Win32 SetParent function. An application calling this function will change the window styles to set the WS_CHILD bit on.

When the window is owned by another window, it will automatically forward certain sets of messages (in particular, mouse and keyboard messages). This allows an application to do simple hot-spot editing and other interactions.

This member function is meant to be called by external objects through the IVideoWindow interface, and therefore locks the critical section to synchronize with the associated filter. Call the CBaseControlWindow::GetOwnerWindow member function to retrieve this property if not calling from an external object.

Requirements

Requirement	Value
Header	Ctlutil.h (include Streams.h)
Library	Strmbase.lib (retail builds); Strmbasd.lib (debug builds)

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