52 lines
1.8 KiB
C#
52 lines
1.8 KiB
C#
using System.Runtime.InteropServices;
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using System.Runtime.InteropServices.ComTypes;
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using DirectShowLib;
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namespace DualScreenDemo
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{
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public class FilterEnumerator
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{
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private static readonly Guid IID_IPropertyBag = new Guid("55272A00-42CB-11CE-8135-00AA004BB851");
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public void EnumerateFilters()
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{
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ICreateDevEnum createDevEnum = (ICreateDevEnum)new CreateDevEnum();
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IEnumMoniker enumMoniker;
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int hr = createDevEnum.CreateClassEnumerator(FilterCategory.LegacyAmFilterCategory, out enumMoniker, 0);
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if (hr != 0 || enumMoniker == null)
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{
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Console.WriteLine("No filters found.");
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return;
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}
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IMoniker[] monikers = new IMoniker[1];
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IntPtr fetched = Marshal.AllocHGlobal(sizeof(int));
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while (enumMoniker.Next(1, monikers, fetched) == 0)
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{
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int fetchedCount = Marshal.ReadInt32(fetched);
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if (fetchedCount > 0)
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{
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object objPropBag;
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Guid tempGuid = IID_IPropertyBag;
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monikers[0].BindToStorage(null, null, ref tempGuid, out objPropBag);
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IPropertyBag propBag = objPropBag as IPropertyBag;
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object filterName = null;
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if (propBag != null)
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{
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propBag.Read("FriendlyName", out filterName, null);
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}
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if (filterName != null)
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{
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Console.WriteLine("Filter: " + filterName.ToString());
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}
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Marshal.ReleaseComObject(monikers[0]);
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}
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}
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Marshal.ReleaseComObject(enumMoniker);
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Marshal.FreeHGlobal(fetched);
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}
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}
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} |