HRESULT Buy( IWMPContentContainerList *pInfo, DWORD cookie );
Pointer to a content container list that represents the content to be purchased.
A cookie used to identify the transaction. You must store this value and pass it to IWMPContentPartnerCallback::BuyComplete when the purchase transaction is finished.
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
||The method succeeded.|
You must call IWMPContentPartnerCallback::BuyComplete exactly once for each call to Buy. Call BuyComplete when the transaction is finished, even if it failed for some reason.
If the user has an expired license for content previously purchased, you can simply update the license.
|Minimum supported client||Windows Media Player 11|