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29 lines
1.2 KiB
C#
29 lines
1.2 KiB
C#
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 Event : OpBase
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{
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internal Event(TwainSession session) : base(session) { }
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/// <summary>
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/// This operation supports the distribution of events from the application to Sources so that the
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/// Source can maintain its user interface and return messages to the application. Once the
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/// application has enabled the Source, it must immediately begin sending to the Source all events
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/// that enter the application’s main event loop. This allows the Source to update its user interface
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/// in real-time and to return messages to the application which cause state transitions. Even if the
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/// application overrides the Source’s user interface, it must forward all events once the Source has
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/// been enabled. The Source will tell the application whether or not each event belongs to the
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/// Source.
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/// </summary>
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/// <param name="theEvent">The event.</param>
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/// <returns></returns>
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public ReturnCode ProcessEvent(TWEvent theEvent)
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{
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Session.VerifyState(4, 7, DataGroups.Control, DataArgumentType.Event, Message.ProcessEvent);
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return PInvoke.DsmEntry(Session.AppId, Session.SourceId, Message.ProcessEvent, theEvent);
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}
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}
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} |