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IFullScreenVideoEx::SetMessageDrain method (amvideo.h)

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 SetMessageDrain method specifies a window to receive mouse and keyboard messages from the video window.

Syntax

HRESULT SetMessageDrain(
  [in] HWND hwnd
);

Parameters

[in] hwnd

Specifies a handle to the message-drain window.

Return value

Returns an HRESULT value.

Remarks

This method is equivalent to the IVideoWindow::put_MessageDrain method.

The Full Screen video renderer posts all mouse and keyboard messages to the window designated as a message drain. The exact list of messages that are posted is the same as the list given in put_MessageDrain.

Applications do not need to use this method. Instead, call the Filter Graph Manager's put_MessageDrain method before switching to full-screen mode. The Filter Graph Manager automatically sets the same message drain on the renderer that it selects for full-screen mode.

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header amvideo.h (include Dshow.h)
Library Strmiids.lib

See also

Error and Success Codes

IFullScreenVideoEx Interface