WMCreateSyncReader function

The WMCreateSyncReader function creates a synchronous reader object.


HRESULT WMCreateSyncReader(
  IUnknown      *pUnkCert,
  DWORD         dwRights,
  IWMSyncReader **ppSyncReader



Pointer to an IUnknown interface. This value must be set to NULL.


DWORD specifying the desired operation. When playing back non-DRM content, or for an application that does not have DRM rights, this value can be set to zero. Otherwise, this value must be one of the values from the WMT_RIGHTS enumeration type, indicating the operation that is performed on this file. If multiple operations are being performed, dwRights must consist of multiple values from WMT_RIGHTS combined by using the bitwise OR operator.


Pointer to a pointer to the IWMSyncReader interface of the newly created synchronous reader object.

Return value

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

Return code Description
The function succeeded.
The function is unable to allocate memory for the new object.


Minimum supported client Windows 2000 Professional [desktop apps only],Windows Media Format 9 Series SDK, or later versions of the SDK
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header wmsdkidl.h (include Wmsdk.h)
Library Wmvcore.lib
DLL Wmvcore.dll

See also


Synchronous Reader Object