IMFVideoPresenter::ProcessMessage method (evr.h)
[The component described on this page, Enhanced Video Renderer, is a legacy feature. It has been superseded by the Simple Video Renderer (SVR) exposed through the MediaPlayer and IMFMediaEngine components. To play video content you should send data into one of these components and allow them to instantiate the new video renderer. These components have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer or the lower level IMFMediaEngine APIs to play video media in Windows instead of the EVR, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
Sends a message to the video presenter. Messages are used to signal the presenter that it must perform some action, or that some event has occurred.
Syntax
HRESULT ProcessMessage(
[in] MFVP_MESSAGE_TYPE eMessage,
[in] ULONG_PTR ulParam
);
Parameters
[in] eMessage
Specifies the message as a member of the MFVP_MESSAGE_TYPE enumeration.
[in] ulParam
Message parameter. The meaning of this parameter depends on the message type.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
|
The video renderer has been shut down. |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2008 [desktop apps only] |
| Target Platform | Windows |
| Header | evr.h |
| Library | Strmiids.lib |