IAMVfwCaptureDialogs::SendDriverMessage method (strmif.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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 SendDriverMessage method sends a driver-specific message.
Syntax
HRESULT SendDriverMessage(
[in] int iDialog,
[in] int uMsg,
[in] long dw1,
[in] long dw2
);
Parameters
[in] iDialog
Handle of the driver dialog box. This is a member of the VfwCaptureDialogs enumeration.
[in] uMsg
Message to send to the driver.
[in] dw1
Message data.
[in] dw2
Message data.
Return value
Return value varies depending on the implementation within each driver.
Remarks
You should never need to use this method. This method can send any private message to the capture driver. Behavior might be undetermined in response to arbitrary messages; use this method at your own risk.
This method calls the Video for Windows videoMessage function to send the driver message.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | strmif.h (include Dshow.h) |
| Library | Strmiids.lib |