lsm/ntwain
1
0
Fork 0
mirror of https://github.com/soukoku/ntwain.git synced 2025-11-24 16:53:24 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Added more event debug logs in sample.

Browse Source
This commit is contained in:
Eugene Wang
2023-04-07 08:39:08 -04:00
parent 20df6fc74c
commit 60ef4c144b
2 changed files with 28 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
samples/WinForm32/Form1.cs
View File

@@ -4,6 +4,9 @@ using System;
using System.Collections.Generic; using System.Collections.Generic;
using System.ComponentModel; using System.ComponentModel;
using System.Diagnostics; using System.Diagnostics;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Reflection; using System.Reflection;
using System.Windows.Forms; using System.Windows.Forms;
@@ -12,6 +15,7 @@ namespace WinFormSample
public partial class Form1 : Form public partial class Form1 : Form
{ {
private TwainAppSession twain; private TwainAppSession twain;
private readonly string saveFolder;
public Form1() public Form1()
{ {
@@ -32,6 +36,9 @@ namespace WinFormSample
capListView.SetDoubleBuffered(true); capListView.SetDoubleBuffered(true);
saveFolder = Path.Combine(Path.GetTempPath(), "ntwain-sample");
Directory.CreateDirectory(saveFolder);
this.Disposed += Form1_Disposed; this.Disposed += Form1_Disposed;
} }
@@ -62,22 +69,39 @@ namespace WinFormSample
private void Twain_DeviceEvent(TwainAppSession sender, TW_DEVICEEVENT e) private void Twain_DeviceEvent(TwainAppSession sender, TW_DEVICEEVENT e)
{ {
Debug.WriteLine($"[thread {Environment.CurrentManagedThreadId}] device event {e}.");
} }
private void Twain_TransferError(TwainAppSession sender, TransferErrorEventArgs e) private void Twain_TransferError(TwainAppSession sender, TransferErrorEventArgs e)
{ {
if (e.Exception != null)
{
Debug.WriteLine($"[thread {Environment.CurrentManagedThreadId}] transfer error {e.Exception}.");
}
else
{
Debug.WriteLine($"[thread {Environment.CurrentManagedThreadId}] transfer error {e.Code}.");
}
} }
private void Twain_DataTransferred(TwainAppSession sender, DataTransferredEventArgs e) private void Twain_DataTransferred(TwainAppSession sender, DataTransferredEventArgs e)
{ {
Debug.WriteLine($"Image transferred with info {e.ImageInfo}"); Debug.WriteLine($"[thread {Environment.CurrentManagedThreadId}] data transferred with info {e.ImageInfo}");
if (e.Data == null) return;
using (var stream = new MemoryStream(e.Data))
using (var img = Image.FromStream(stream))
{
var saveFile = Path.Combine(saveFolder, (DateTime.Now.Ticks / 1000) + ".png");
img.Save(saveFile, ImageFormat.Png);
Debug.WriteLine($"Saved image to {saveFile}");
}
} }
private void Twain_TransferReady(TwainAppSession sender, TransferReadyEventArgs e) private void Twain_TransferReady(TwainAppSession sender, TransferReadyEventArgs e)
{ {
Debug.WriteLine($"[thread {Environment.CurrentManagedThreadId}] transfer ready.");
} }
private void Twain_DefaultSourceChanged(TwainAppSession sender, TW_IDENTITY_LEGACY ds) private void Twain_DefaultSourceChanged(TwainAppSession sender, TW_IDENTITY_LEGACY ds)
@@ -87,7 +111,7 @@ namespace WinFormSample
private void Twain_StateChanged(TwainAppSession sender, STATE state) private void Twain_StateChanged(TwainAppSession sender, STATE state)
{ {
Invoke(()=> lblState.Text = state.ToString()); Invoke(() => lblState.Text = state.ToString());
} }
private void Twain_CurrentSourceChanged(TwainAppSession sender, TW_IDENTITY_LEGACY ds) private void Twain_CurrentSourceChanged(TwainAppSession sender, TW_IDENTITY_LEGACY ds)

2
src/NTwain/TwainAppSession.Windows.cs
View File

@@ -92,7 +92,7 @@ namespace NTwain
handled = rc == TWRC.DSEVENT; handled = rc == TWRC.DSEVENT;
if (_procEvent.TWMessage != 0 && (handled || rc == TWRC.NOTDSEVENT)) if (_procEvent.TWMessage != 0 && (handled || rc == TWRC.NOTDSEVENT))
{ {
Debug.WriteLine("Thread {0}: CheckIfTwainMessage at state {1} with MSG={2}.", Thread.CurrentThread.ManagedThreadId, State, (MSG)_procEvent.TWMessage); Debug.WriteLine($"[thread {Environment.CurrentManagedThreadId}]: CheckIfTwainMessage at state {State} with MSG={_procEvent.TWMessage}.");
HandleSourceMsg((MSG)_procEvent.TWMessage); HandleSourceMsg((MSG)_procEvent.TWMessage);
} }
} }