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43 lines
1.9 KiB
C#
43 lines
1.9 KiB
C#
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// The MIT License (MIT)
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// Copyright (c) 2013 Yin-Chun Wang
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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// OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using NTwain.Data;
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using NTwain.Values;
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using System;
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namespace NTwain.Triplets
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{
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sealed class Callback2 : OpBase
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{
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internal Callback2(TwainSession session) : base(session) { }
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/// <summary>
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/// This triplet is sent to the DSM by the Application to register the application’s entry point with
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/// the DSM, so that the DSM can use callbacks to inform the application of events generated by the
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/// DS.
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/// </summary>
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/// <param name="callback">The callback.</param>
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/// <returns></returns>
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public ReturnCode RegisterCallback(TWCallback2 callback)
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{
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Session.VerifyState(4, 4, DataGroups.Control, DataArgumentType.Callback, Message.RegisterCallback);
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return PInvoke.DsmEntry(Session.AppId, Session.SourceId, Message.RegisterCallback, callback);
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}
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}
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}
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