IWMSContentDescriptionList.GetDescriptionCount (C#)
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IWMSContentDescriptionList.GetDescriptionCount (C#)
The GetDescriptionCount method retrieves the number of content description contexts in the description list.
Syntax
Parameters
pdwNumDescriptions
Reference to a uint 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
Guid ContextGuid = typeof(IWMSContext).GUID;
Guid ContentDescListGuid = typeof(IWMSContentDescriptionList).GUID;
IWMSContext Context;
IWMSContentDescriptionList ContentDescList;
IntPtr pUnknown;
uint uCount;
try
{
m_ClassFactory.AllocIWMSContext(ref ContextGuid,
WMS_CONTEXT_TYPE.WMS_USER_CONTEXT_TYPE,
pUserContext, out pUnknown);
Context = (IWMSContext)Marshal.GetTypedObjectForIUnknown(pUnknown,
typeof(IWMSContext));
m_ClassFactory.CreateInstance(ref ContentDescListGuid, out pUnknown);
ContentDescList =
(IWMSContentDescriptionList)Marshal.GetTypedObjectForIUnknown(
pUnknown, typeof(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( Exception e )
{
// TODO: Handle exceptions.
}
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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