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Ported old native image xfer with shared buffer test.

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This commit is contained in:
Eugene Wang
2023-04-07 08:25:39 -04:00
parent 242e3eba15
commit 20df6fc74c
9 changed files with 384 additions and 105 deletions
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22
samples/WinForm32/ControlExtensions.cs Normal file
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@@ -0,0 +1,22 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WinFormSample
{
static class ControlExtensions
{
public static void SetDoubleBuffered(this Control control, bool value)
{
if (SystemInformation.TerminalServerSession) return;
var dbprop = control.GetType().GetProperty("DoubleBuffered", BindingFlags.NonPublic | BindingFlags.Instance);
dbprop!.SetValue(control, value);
}
}
}

87
samples/WinForm32/Form1.cs
View File

@@ -25,18 +25,33 @@ namespace WinFormSample
twain.StateChanged += Twain_StateChanged;
twain.DefaultSourceChanged += Twain_DefaultSourceChanged;
twain.CurrentSourceChanged += Twain_CurrentSourceChanged;
twain.TransferReady += Twain_TransferReady;
twain.DataTransferred += Twain_DataTransferred;
twain.TransferError += Twain_TransferError;
twain.DeviceEvent += Twain_DeviceEvent;
SetDoubleBuffered(capListView);
capListView.SetDoubleBuffered(true);
this.Disposed += Form1_Disposed;
}
static void SetDoubleBuffered(Control control)
protected override void OnHandleCreated(EventArgs e)
{
if (SystemInformation.TerminalServerSession) return;
base.OnHandleCreated(e);
var dbprop = control.GetType().GetProperty(nameof(DoubleBuffered), BindingFlags.NonPublic | BindingFlags.Instance);
dbprop!.SetValue(control, true);
var hwnd = this.Handle;
var rc = twain.OpenDSM(hwnd);
twain.AddWinformFilter();
Debug.WriteLine($"OpenDSM={rc}");
}
protected override void OnClosing(CancelEventArgs e)
{
var finalState = twain.TryStepdown(STATE.S2);
Debug.WriteLine($"Stepdown result state={finalState}");
twain.RemoveWinformFilter();
base.OnClosing(e);
}
private void Form1_Disposed(object? sender, EventArgs e)
@@ -44,7 +59,38 @@ namespace WinFormSample
twain.Dispose();
}
private void Twain_CurrentSourceChanged(TwainAppSession arg1, TW_IDENTITY_LEGACY ds)
private void Twain_DeviceEvent(TwainAppSession sender, TW_DEVICEEVENT e)
{
}
private void Twain_TransferError(TwainAppSession sender, TransferErrorEventArgs e)
{
}
private void Twain_DataTransferred(TwainAppSession sender, DataTransferredEventArgs e)
{
Debug.WriteLine($"Image transferred with info {e.ImageInfo}");
}
private void Twain_TransferReady(TwainAppSession sender, TransferReadyEventArgs e)
{
}
private void Twain_DefaultSourceChanged(TwainAppSession sender, TW_IDENTITY_LEGACY ds)
{
lblDefault.Text = ds.ProductName;
}
private void Twain_StateChanged(TwainAppSession sender, STATE state)
{
Invoke(()=> lblState.Text = state.ToString());
}
private void Twain_CurrentSourceChanged(TwainAppSession sender, TW_IDENTITY_LEGACY ds)
{
lblCurrent.Text = ds.ProductName;
if (twain.State == STATE.S4)
@@ -170,35 +216,6 @@ namespace WinFormSample
return "";
}
private void Twain_DefaultSourceChanged(TwainAppSession arg1, TW_IDENTITY_LEGACY ds)
{
lblDefault.Text = ds.ProductName;
}
private void Twain_StateChanged(TwainAppSession session, STATE state)
{
lblState.Text = state.ToString();
}
protected override void OnHandleCreated(EventArgs e)
{
base.OnHandleCreated(e);
var hwnd = this.Handle;
var rc = twain.OpenDSM(hwnd);
twain.AddWinformFilter();
Debug.WriteLine($"OpenDSM={rc}");
}
protected override void OnClosing(CancelEventArgs e)
{
var finalState = twain.TryStepdown(STATE.S2);
Debug.WriteLine($"Stepdown result state={finalState}");
twain.RemoveWinformFilter();
base.OnClosing(e);
}
private void btnSelect_Click(object sender, EventArgs e)
{
twain.ShowUserSelect();