niko
49 lines
1.7 KiB
C#
49 lines
1.7 KiB
C#
using System;
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using System.Collections;
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using System.Diagnostics;
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using System.Reflection;
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namespace System.Runtime.InteropServices
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{
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/// <summary>Enables customization of managed objects that extend from unmanaged objects during creation.</summary>
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// Token: 0x02000310 RID: 784
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[ComVisible(true)]
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public sealed class ExtensibleClassFactory
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{
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// Token: 0x060021F5 RID: 8693 RVA: 0x00079448 File Offset: 0x00077648
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private ExtensibleClassFactory()
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{
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}
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// Token: 0x060021F7 RID: 8695 RVA: 0x0007945C File Offset: 0x0007765C
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internal static ObjectCreationDelegate GetObjectCreationCallback(Type t)
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{
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return ExtensibleClassFactory.hashtable[t] as ObjectCreationDelegate;
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}
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/// <summary>Registers a delegate that is called when an instance of a managed type, that extends from an unmanaged type, needs to allocate the aggregated unmanaged object.</summary>
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/// <param name="callback">A delegate that is called in place of CoCreateInstance. </param>
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// Token: 0x060021F8 RID: 8696 RVA: 0x00079470 File Offset: 0x00077670
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public static void RegisterObjectCreationCallback(ObjectCreationDelegate callback)
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{
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int i = 1;
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StackTrace stackTrace = new StackTrace(false);
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while (i < stackTrace.FrameCount)
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{
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StackFrame frame = stackTrace.GetFrame(i);
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MethodBase method = frame.GetMethod();
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if (method.MemberType == MemberTypes.Constructor && method.IsStatic)
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{
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ExtensibleClassFactory.hashtable.Add(method.DeclaringType, callback);
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return;
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}
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i++;
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}
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throw new InvalidOperationException("RegisterObjectCreationCallback must be called from .cctor of class derived from ComImport type.");
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}
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// Token: 0x04000D18 RID: 3352
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private static Hashtable hashtable = new Hashtable();
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}
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}
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