IWMSClassObject.CreateInstance (Visual Basic .NET)
The CreateInstance method is a generic method for creating objects for the server.
IWMSClassObject.CreateInstance( ByRef riid As Guid,
ByRef ppunk As IntPtr
)
Arguments
Reference to a Guid specifying the requested object. This must be one of the following values. |
Value |
Description |
|---|---|
IID_IWMSContentDescriptionList
|
GUID identifying an IWMSContentDescriptionListIWMSContentDescriptionList Object (Visual Basic .NET).
|
IID_IWMSDataContainerVersion
|
GUID identifying an IWMSDataContainerVersionIWMSDataContainerVersion Object (Visual Basic .NET).
|
IID_IWMSPacket
|
GUID identifying an IWMSPacketIWMSPacket Object (Visual Basic .NET).
|
IID_IWMSPacketList
|
GUID identifying an IWMSPacketListIWMSPacketList Object (Visual Basic .NET).
|
IID_IWMSStreamHeader
|
GUID identifying an IWMSStreamHeaderIWMSStreamHeader Object (Visual Basic .NET).
|
IID_IWMSStreamHeaderList
|
GUID identifying an IWMSStreamHeaderListIWMSStreamHeaderList Object (Visual Basic .NET).
|
Reference to an IntPtr containing a newly created object. |
Return Value
This method does not return a value.
If this method fails, it throws an exception.
Number |
Description |
|---|---|
0x80070057 |
ppunk is null or riid is not equal to one of the expected values. |
0x8007000E |
There is insufficient memory to complete the function. |
Example
Dim ContentDescList As IWMSContentDescriptionList
Dim pUnknown As IntPtr
Try
m_ClassFactory.CreateInstance( _
GetType(IWMSContentDescriptionList).GUID, _
pUnknown)
ContentDescList = Marshal.GetTypedObjectForIUnknown(pUnknown, _
GetType(IWMSContentDescriptionList))
Catch e As Exception
' TODO: Handle exceptions.
End Try
Requirements
Reference: Add a reference to Microsoft.WindowsMediaServices.
Namespace: Microsoft.WindowsMediaServices.Interop.
Assembly: Microsoft.WindowsMediaServices.dll.
Library: WMSServerTypeLib.dll.
Platform: Windows Server 2003, Enterprise Edition; Windows Server 2003, Datacenter Edition; Windows Server 2008.