IWMSContentDescriptionList.GetDescriptionCount (Visual Basic .NET)
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IWMSContentDescriptionList.GetDescriptionCount (Visual Basic .NET)
The GetDescriptionCount method retrieves the number of content description contexts in the description list.
Syntax
Parameters
pdwNumDescriptions
Reference to a UInt32 containing the number of contexts in the list.
Return Values
This method does not return a value.
If this method fails, it throws an exception.
Number | Description |
0x80070057 | pdwNumDescriptions is null. |
Example Code
Dim Context As IWMSContext Dim ContentDescList As IWMSContentDescriptionList Dim pUnknown As IntPtr Dim uCount As UInt32 Try m_ClassFactory.AllocIWMSContext(GetType(IWMSContext).GUID, _ WMS_CONTEXT_TYPE.WMS_USER_CONTEXT_TYPE, _ pUserContext, pUnknown) Context = Marshal.GetTypedObjectForIUnknown(pUnknown, _ GetType(IWMSContext)) m_ClassFactory.CreateInstance( _ GetType(IWMSContentDescriptionList).GUID, pUnknown) ContentDescList = Marshal.GetTypedObjectForIUnknown(pUnknown, _ GetType(IWMSContentDescriptionList)) Context.SetStringValue(WMSDefines.WMS_CONTENT_DESCRIPTION_TITLE, _ WMSDefines.WMS_CONTENT_DESCRIPTION_TITLE_ID, _ "My Title", 0) Context.SetLongValue(WMSDefines.WMS_CONTENT_DESCRIPTION_NO_SKIP, _ WMSDefines.WMS_CONTENT_DESCRIPTION_NO_SKIP_ID, 1, 0) ContentDescList.AppendDescription("en-us", Context) ContentDescList.GetDescriptionCount(uCount) 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.
See Also
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