IWMPContentPartner::GetContentPartnerInfo method (contentpartner.h)

[アーティクル]
4/26/2023

[The feature associated with this page, Windows Media Player SDK, is a legacy feature. It has been superseded by MediaPlayer. MediaPlayer has been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer instead of Windows Media Player SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

Note This section describes functionality designed for use by online stores. Use of this functionality outside the context of an online store is not supported.

The GetContentPartnerInfo method retrieves specific information about the online store.

Syntax

HRESULT GetContentPartnerInfo(
  [in]  BSTR    bstrInfoName,
  [out] VARIANT *pData
);

Parameters

[in] bstrInfoName

A BSTR that specifies the type of information to retrieve. See Remarks for a list of possible values.

[out] pData

Address of a VARIANT that receives the information.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code	Description
S_OK	The method succeeded.

Remarks

The following list gives the possible values for bstrInfoName along with the corresponding values returned in pData.

g_szContentPartnerInfo_LoginState

The pData parameter receives a VT_BOOL that indicates whether the user is currently signed in. VARIANT_TRUE indicates that the user is signed in; VARIANT_FALSE indicates that the user is not signed in.

g_szContentPartnerInfo_MediaPlayerAccountType

The pData parameter receives a WMPAccountType enumeration value (VT_UI4) that indicates the account type. This value is used by Windows Media Player.

g_szContentPartnerInfo_AccountType

The pData parameter receives a VT_BSTR that contains the account type string for the online store. This value is not used by Windows Media Player but might be displayed to the user.

g_szContentPartnerInfo_HasCachedCredentials

The pData parameter receives a VT_BOOL that indicates whether the plug-in has cached the user's credentials (user name and password). VARIANT_TRUE indicates that the plug-in has cached the credentials; VARIANT_FALSE indicates that the plug-in has not cached the credentials.

g_szContentPartnerInfo_LicenseRefreshAdvanceWarning

The pData parameter receives a VT_UI4 that indicates the number of days before expiration within which the online store can preemptively renew a license. For example, if the plug-in can support renewing a license for subscription content 5 days before the license expires, pData receives the value 5.

g_szContentPartnerInfo_PurchasedTrackRequiresReDownload

The pData parameter receives a VT_BOOL that indicates whether a track being purchased must be downloaded even though the content was downloaded in the past. VARIANT_TRUE indicates that the track must be downloaded; VARIANT_FALSE indicates that the track does not have to be downloaded.

g_szContentPartnerInfo_MaximumTrackPurchasePerPurchase

The pData parameter receives a VT_UI4 that indicates the maximum number of tracks that the online store can handle in a single call to IWMPContentPartner::Buy. If there is no maximum, pData receives a value of 0.

g_szContentPartnerInfo_AccountBalance

The pData parameter receives a VT_BSTR that indicates the user's account balance. Windows Media Player displays this string but does not interpret it.

g_szContentPartnerInfo_UserName

The pData parameter receives a VT_BSTR that indicates the user name of the user that is currently logged in. Windows Media Player displays this string but does not interpret it.

Requirements

Requirement	Value
Minimum supported client	Windows Media Player 11
Target Platform	Windows
Header	contentpartner.h

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