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IMDSPDevice::SendOpaqueCommand

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The SendOpaqueCommand method sends a command through Windows Media Device Manager. Without acting on it, Windows Media Device Manager passes the command through to a device. This method is optional. For more information, see the second table under Implementing Service Providers.

Syntax

HRESULT SendOpaqueCommand(
  OPAQUECOMMAND*  pCommand
);

Parameters

pCommand

[in, out]  Pointer to an OPAQUECOMMAND structure containing the information required to execute the command.

Return Values

The method returns an HRESULT. All the interface methods in Windows Media Device Manager and service provider can return any of the following classes of error codes:

  • Standard COM error codes
  • Windows error codes converted to HRESULT values
  • Windows Media Device Manager error codes

For a complete list of possible error codes, see Error Codes.

Possible values include, but are not limited to, those in the following table.

Return code Description
S_OK The method succeeded.
E_INVALIDARG The pCommand parameter is an invalid or NULL pointer.
E_FAIL An unspecified error occurred.

Remarks

This method is used with device commands that do not affect Windows Media Device Manager, and are passed through unchanged.

Requirements

Header: Defined in wmsp.idl.

Library: mssachlp.lib

See Also