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Added transfercanceled event like PR #35.

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This commit is contained in:
Eugene Wang 2023-04-09 13:15:45 -04:00
parent 31b4be0bfe
commit 62c091fd12
3 changed files with 23 additions and 0 deletions
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10
src/NTwain/TransferCanceledEventArgs.cs Normal file
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@ -0,0 +1,10 @@
using NTwain.Data;
using System;
namespace NTwain
{
public class TransferCanceledEventArgs : EventArgs
{
}
}

5
src/NTwain/TwainAppSession.PropEvents.cs
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@ -156,6 +156,11 @@ namespace NTwain
/// </summary>
public event TwainEventDelegate<TransferReadyEventArgs>? TransferReady;
/// <summary>
/// Fires when there's a transfer cancellation, e.g. if the user pressed the "Cancel" button.
/// </summary>
public event TwainEventDelegate<TransferCanceledEventArgs>? TransferCanceled;
/// <summary>
/// Fires when transferred data is available for app to use.
/// </summary>

8
src/NTwain/TwainAppSession.Xfers.cs
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@ -176,6 +176,14 @@ namespace NTwain
// ok to keep going
break;
case TWRC.CANCEL:
// might eventually have option to cancel this or all like transfer ready
if (TransferCanceled != null)
{
_uiThreadMarshaller.Invoke(() =>
{
TransferCanceled.Invoke(this, new TransferCanceledEventArgs());
});
};
TW_PENDINGXFERS pending = default;
DGControl.PendingXfers.EndXfer(ref _appIdentity, ref _currentDS, ref pending);
// todo: also reset?