2014-04-02 19:13:15 -04:00
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using NTwain.Data;
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2014-04-02 19:01:21 -04:00
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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 Callback : OpBase
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{
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internal Callback(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(TWCallback 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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