IAMVfwCaptureDialogs::SendDriverMessage method (strmif.h)

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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 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