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Add stepdown for currently supported state levels

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This commit is contained in:
Eugene Wang
2023-04-01 15:42:18 -04:00
parent 5aa808024f
commit f63fbc8371
4 changed files with 33 additions and 11 deletions
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15
samples/WinForm32/Form1.cs
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@@ -1,5 +1,6 @@
using NTwain;
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Reflection;
using System.Windows.Forms;
@@ -21,7 +22,7 @@ namespace WinForm32
twain.StateChanged += Twain_StateChanged;
}
private static void Twain_StateChanged(TwainSession session, TWAINWorkingGroup.STATE state)
private static void Twain_StateChanged(TwainSession session, STATE state)
{
Console.WriteLine($"State changed to {state}");
}
@@ -34,12 +35,14 @@ namespace WinForm32
var hwnd = this.Handle;
var rc = twain.DGControl.Parent.OpenDSM(ref hwnd);
Debug.WriteLine($"OpenDSM={rc}");
}
if (rc == TWAINWorkingGroup.STS.SUCCESS)
{
Debug.WriteLine($"CloseDSM={rc}");
rc = twain.DGControl.Parent.CloseDSM(ref hwnd);
}
protected override void OnClosing(CancelEventArgs e)
{
var finalState = twain.TryStepdown(STATE.S2);
Debug.WriteLine($"Stepdown result state={finalState}");
base.OnClosing(e);
}
}
}