IltmmMediaTypeDisp::get_Subtype

#include "ltmm.h"

C Syntax	HRESULT IltmmMediaTypeDisp_get_Subtype(pMediaTypeDisp, pVal)
C++ Syntax	HRESULT get_Subtype(pVal)

IltmmMediaTypeDisp *pMediaTypeDisp;	pointer to an interface
BSTR *pVal;	string

Retrieves the subtype of the media sample.

Parameter	Description
pMediaTypeDisp	Pointer to an IltmmMediaTypeDisp interface.
pVal	Pointer to a character string that contains the subtype string. For more information on possible strings, refer to the DirectShow documentation.

Returns

S_OK	The function was successful.
<> S_OK	An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.

Comments

The string referenced by pVal contains a formatted Globally Unique Identifier (GUID) of the form {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}. For more information on the available GUIDs, refer to the DirectShow documentation.

If the function succeeds, the caller must free the BSTR referenced by pVal, by calling the SysFreeString function.

Platforms

Win32, x64

See Also

Elements:	IltmmMediaTypeDisp::get_Format, IltmmMediaTypeDisp::get_FixedSizeSamples, IltmmMediaTypeDisp::get_FormatSize, IltmmMediaTypeDisp::get_SampleSize, IltmmMediaTypeDisp::get_FormatType, IltmmMediaTypeDisp::get_TemporalCompression, IltmmMediaTypeDisp::get_Type, IltmmMediaTypeDisp::GetFormatData, IltmmMediaTypeDisp::put_FixedSizeSamples, IltmmMediaTypeDisp::put_FormatSize, IltmmMediaTypeDisp::put_FormatType, IltmmMediaTypeDisp::put_SampleSize, IltmmMediaTypeDisp::put_Subtype, IltmmMediaTypeDisp::put_TemporalCompression, IltmmMediaTypeDisp::put_Type, IltmmMediaTypeDisp::SetFormatData
Topics:	Multimedia Function Group
	IltmmMediaTypeDisp interface
	ltmmMediaType object