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97fec24e46
* glib/SignalCallback.cs: new methods AddDelegate and RemoveDelegate. * generator/Signal.cs: add/remove signal handlers from the delegate used to invoke them. * generator/SignalHandler.cs: use Delegate instead of MulticastDelegate. svn path=/trunk/gtk-sharp/; revision=11255
63 lines
1.3 KiB
C#
63 lines
1.3 KiB
C#
// GtkSharp.SignalCallback.cs - Signal callback base class implementation
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//
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// Authors: Mike Kestner <mkestner@speakeasy.net>
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//
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// (c) 2001 Mike Kestner
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namespace GtkSharp {
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using System;
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using System.Collections;
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using System.Runtime.InteropServices;
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using GLib;
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/// <summary>
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/// SignalCallback Class
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/// </summary>
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///
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/// <remarks>
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/// Base Class for GSignal to C# event marshalling.
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/// </remarks>
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public abstract class SignalCallback {
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// A counter used to produce unique keys for instances.
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protected static int _NextKey = 0;
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// Hashtable containing refs to all current instances.
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protected static Hashtable _Instances = new Hashtable ();
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// protected instance members
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protected GLib.Object _obj;
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protected Delegate _handler;
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protected int _key;
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protected Type _argstype;
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/// <summary>
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/// SignalCallback Constructor
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/// </summary>
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///
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/// <remarks>
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/// Initializes instance data.
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/// </remarks>
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public SignalCallback (GLib.Object obj, Delegate eh, Type argstype)
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{
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_key = _NextKey++;
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_obj = obj;
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_handler = eh;
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_argstype = argstype;
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_Instances [_key] = this;
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}
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public void AddDelegate (Delegate d)
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{
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_handler = Delegate.Combine (_handler, d);
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}
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public void RemoveDelegate (Delegate d)
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{
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_handler = Delegate.Remove (_handler, d);
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}
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}
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}
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