IMDSPDevice::GetType

The GetType method retrieves device type information.

Syntax

HRESULT GetType(DWORD*pdwType);

Parameters

pdwType

[out] Pointer to a DWORD that receives the type attributes of the device. The following table shows the types received.

Device type	Description
WMDM_DEVICE_TYPE_PLAYBACK	The media device supports audio playback.
WMDM_DEVICE_TYPE_RECORD	The media device supports audio recording.
WMDM_DEVICE_TYPE_DECODE	The media device supports audio format decoding.
WMDM_DEVICE_TYPE_ENCODE	The media device supports audio format encoding.
WMDM_DEVICE_TYPE_STORAGE	The media device has on-board storage for media files.
WMDM_DEVICE_TYPE_SDMI	The media device is SDMI compliant.
WMDM_DEVICE_TYPE_NONSDMI	The media device is not SDMI compliant.
WMDM_DEVICE_TYPE_VIRTUAL	The media device is not a physical device.
WMDM_DEVICE_TYPE_NONREENTRANT	The media device must synchronize access to the service provider services.
WMDM_DEVICE_TYPE_FILELISTRESYNC	The media device allows the file list to be resynchronized.
WMDM_DEVICE_TYPE_VIEW_PREF_METADATAVIEW	The media device prefers metadata views while its storages are enumerated.

Return Values

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

For an extenstive list of possible error codes, see Error Codes.

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

Return code	Description
E_INVALIDARG	The pdwType parameter is an invalid or NULL pointer.
E_FAIL	An unspecified error occurred.

Remarks

This method must be implemented. It must not return WMDM_E_NOTSUPPORTED or E_NOTIMPL. For more information, see Mandatory and Optional Interfaces.

Requirements

Header: Defined in mswmdm.h.

Library: mssachlp.lib

See Also

Ressources supplémentaires