private ScanForm()
{
InitializeComponent();
appId = TWIdentity.CreateFromAssembly(DataGroups.Image, Assembly.GetExecutingAssembly());
session = new TwainSession(appId);
session.TransferReady += new EventHandler <TransferReadyEventArgs>(session_TransferReady);
session.DataTransferred += new EventHandler <DataTransferredEventArgs>(session_DataTransferred);
session.Open();
scanner = session.ShowSourceSelector();
if (scanner == null)
{
this.DialogResult = DialogResult.Abort;
session.Close();
return;
}
ReturnCode rc = scanner.Open();
if (rc != ReturnCode.Success)
{
this.DialogResult = System.Windows.Forms.DialogResult.Abort;
session.Close();
return;
}
}
private void StartupTwain()
{
try
{
if (TwainSession.IsAvailable(this.Handle))
{
_twainSession = new TwainSession();
_twainSession.Startup(this.Handle, "LEAD Technologies, Inc.", "LEAD Test Applications", "Version 1.0", "TWAIN Test Application", TwainStartupFlags.None);
_twainSession.AcquirePage += new EventHandler <TwainAcquirePageEventArgs>(twainSession_AcquirePage);
}
scanImageToolStripMenuItem.Enabled = _twainSession != null;
}
catch (TwainException ex)
{
if (ex.Code == TwainExceptionCode.InvalidDll)
{
_twainSession = null;
Messager.ShowError(this, "You have an old version of TWAINDSM.DLL. Please download latest version of this DLL from www.twain.org");
}
else
{
_twainSession = null;
Messager.ShowError(this, ex);
}
}
catch (Exception ex)
{
Messager.ShowError(this, ex);
_twainSession = null;
}
}
protected override ScanDevice PromptForDeviceInternal()
{
if (ScanProfile != null && ScanProfile.TwainImpl == TwainImpl.Legacy)
{
return Legacy.TwainApi.SelectDeviceUI();
}
var session = new TwainSession(TwainAppId);
session.Open();
try
{
var ds = session.ShowSourceSelector();
if (ds == null)
{
return null;
}
string deviceId = ds.Name;
string deviceName = ds.Name;
return new ScanDevice(deviceId, deviceName);
}
finally
{
session.Close();
}
}
private static TwainSession InitTwain()
{
var twain = new TwainSession(TWIdentity.CreateFromAssembly(DataGroups.Image, Assembly.GetExecutingAssembly()));
twain.TransferReady += (s, e) =>
{
Console.WriteLine("Got xfer ready on thread {0}.", Thread.CurrentThread.ManagedThreadId);
};
twain.DataTransferred += (s, e) =>
{
if (e.NativeData != IntPtr.Zero)
{
Console.WriteLine("SUCCESS! Got twain data on thread {0}.", Thread.CurrentThread.ManagedThreadId);
}
else
{
Console.WriteLine("BUMMER! No twain data on thread {0}.", Thread.CurrentThread.ManagedThreadId);
}
};
twain.SourceDisabled += (s, e) =>
{
Console.WriteLine("Source disabled on thread {0}.", Thread.CurrentThread.ManagedThreadId);
var rc = twain.CurrentSource.Close();
rc = twain.Close();
};
return(twain);
}
public bool GetCap()
{
bool flag = true;
if (capId == TwCap.ICAP_XRESOLUTION || capId == TwCap.ICAP_YRESOLUTION)
{
flag = SetInch();
}
//if (capId == TwCap.ICAP_THRESHOLD)
//{
// flag = SetBitDepthReduction();
//}
if (flag)
{
if (capId == TwCap.ECAP_PAPERSOURCE)
{
GetPaperSource();
}
else
{
TwCapability cap = new TwCapability(capId);
if (twSession.GetCapability(ref cap))
{
IntPtr intPtr = cap.contentValuePtr;
switch (cap.contentType)
{
case TwOn.One:
GetCapFromOneValue(intPtr);
break;
case TwOn.Array:
GetCapFromArray(intPtr);
break;
case TwOn.Enum:
GetCapFromEnumeration(intPtr);
break;
case TwOn.Range:
GetCapFromRange(intPtr);
break;
default:
{
logger.Debug("the contentType in TwCapability is wrong");
flag = false;
}
break;
}
}
if (cap.contentValuePtr != null)
{
TwainSession.GlobalFree(cap.contentValuePtr);
}
}
}
return(flag);
}
public void VerifyState_No_Throws_When_State_Is_Not_Enforced()
{
ITwainSessionInternal session = new TwainSession(TWIdentity.Create(DataGroups.Image, new Version(1, 0), "test", "test", "test", "test"));
session.EnforceState = false;
session.ChangeState(4, false);
session.VerifyState(6, 6, DataGroups.Image, DataArgumentType.ImageNativeXfer, Message.Get);
}
/// <summary>
/// Initializes a new instance of the <see cref="BaseTriplet" /> class.
/// </summary>
/// <param name="session">The session.</param>
/// <exception cref="System.ArgumentNullException"></exception>
protected BaseTriplet(TwainSession session)
{
this.Session = session ?? throw new ArgumentNullException(nameof(session));
Is32Bit = session.Config.Is32Bit;
IsWin = session.Config.Platform == System.PlatformID.Win32NT;
IsLinux = session.Config.Platform == System.PlatformID.Unix;
IsMac = session.Config.Platform == System.PlatformID.MacOSX;
}
public ProcessDialog(TwainSession twainSession, IOcrEngine ocrEngine, string documentFileName, DocumentFormat format)
{
InitializeComponent();
_twainSession = twainSession;
_document = ocrEngine.DocumentManager.CreateDocument();
_documentFileName = documentFileName;
_format = format;
}
/// <summary>
/// アプリケーションの初期化処理を行います。
/// </summary>
private void InitClass()
{
// フォームのタイトルを設定します。
this.Text = "TWAIN 取得 【振替伝票読み取り】";
//自分自身のバージョン情報を取得する 2011/03/25
//System.Diagnostics.FileVersionInfo ver =
// System.Diagnostics.FileVersionInfo.GetVersionInfo(
// System.Reflection.Assembly.GetExecutingAssembly().Location);
//キャプションにバージョンを追加 2011/03/25
//Messager.Caption += " ver " + ver.FileMajorPart.ToString() + "." + ver.FileMinorPart.ToString();
//Text = Messager.Caption;
// ロック解除状態を確認します。
//Support.Unlock(false);
// RasterImageViewerコントロールを初期化します。
_viewer = new RasterImageViewer();
//_viewer.Dock = DockStyle.Fill;
_viewer.BackColor = Color.DarkGray;
Controls.Add(_viewer);
_viewer.BringToFront();
_viewer.Visible = false;
// コーデックパスを設定します。
RasterCodecs.Startup();
// RasterCodecsオブジェクトを初期化します。
_codecs = new RasterCodecs();
if (TwainSession.IsAvailable(this))
{
// TwainSessionオブジェクトを初期化します。
_twainSession = new TwainSession();
// TWAIN セッションを初期化します。
_twainSession.Startup(this, "FKDL", "LEADTOOLS", "Ver16.5J", "OCR", TwainStartupFlags.None);
//_twainSession.Startup2(this, "FKDL", "LEADTOOLS", "Ver16.5J", "OCR", TwainStartupFlags.None, TwainLanguage.LanguageJapanese, TwainCountry.CountryJapan);
}
else
{
//_miFileAcquire.Enabled = false;
//_miFileSelectSource.Enabled = false;
}
// 各値を初期化します。
_fileName = string.Empty;
_fileFormat = RasterImageFormat.Tif;
_pageNo = 1;
_sFileNumber = 0;
//UpdateMyControls();
UpdateStatusBarText();
}
private static void TestThisSource(TwainSession session, DataSource source)
{
Console.WriteLine($"Testing data source {source}");
Console.WriteLine();
source.Open();
var testStatus = session.GetStatus();
var testMessage = session.GetLocalizedStatus(ref testStatus);
var rc = source.ShowUI(IntPtr.Zero);
}
public List<ScanDevice> GetDeviceList()
{
var session = new TwainSession(TwainAppId);
session.Open();
try
{
return session.GetSources().Select(ds => new ScanDevice(ds.Name, ds.Name)).ToList();
}
finally
{
session.Close();
}
}
public List<ScanDevice> GetDeviceList(TwainImpl twainImpl)
{
PlatformInfo.Current.PreferNewDSM = twainImpl != TwainImpl.OldDsm;
var session = new TwainSession(TwainAppId);
session.Open();
try
{
return session.GetSources().Select(ds => new ScanDevice(ds.Name, ds.Name)).ToList();
}
finally
{
session.Close();
}
}
public void Scan()
{
var applicationID = TWIdentity.CreateFromAssembly(DataGroups.Image, Assembly.GetExecutingAssembly());
Session = new TwainSession(applicationID);
Session.TransferReady += Session_TransferReady;
Session.DataTransferred += Session_DataTransferred;
Session.SourceDisabled += Session_SourceDisabled;
Session.Open();
DataSource dataSource = Session.FirstOrDefault();
dataSource.Open();
dataSource.Enable(SourceEnableMode.NoUI, false, WindowHandle);
}
private void MainForm_Load(object sender, EventArgs e)
{
try
{
bool bTwainAvailable = TwainSession.IsAvailable(this.Handle);
if (bTwainAvailable)
{
//Initialize codecs object
_codecs = new RasterCodecs();
//Initialize the number of Files to be saved using Twain
_saveFilesCount = 0; //Variable
_twainSaveFilePath = Leadtools.Demos.DemosGlobal.ImagesFolder;
//Set the name of the first file to be saved using Twain
_twainSaveFileName = ChangeSaveFileName("");//variable
//Initialize the twnSession object
_twnSession = new TwainSession();
//For 32-bit driver support in 64-bit applications, use the following TWAIN initialization method instead:
//_twnSession.Startup(this.Handle, "LEADTOOLS", "LEADTOOLS for .NET", String.Empty, "TwainWithBarcodeSeparatorDemo", TwainStartupFlags.UseThunkServer);
//Start the twnSession object
_twnSession.Startup(this.Handle, "LEADTOOLS", "LEADTOOLS for .NET", String.Empty, "TwainWithBarcodeSeparatorDemo", TwainStartupFlags.None);
//handle the AcquirePage event
_twnSession.AcquirePage += new EventHandler <TwainAcquirePageEventArgs>(Twain_AcquirePage);
_seperatorStringDlg = new SeperatorStringDialog();
InitViewer();
UpdateControls();
UpdateStatusBarText();
}
EnableControls(bTwainAvailable);
}
catch (TwainException ex)
{
if (ex.Code == TwainExceptionCode.InvalidDll)
{
Messager.ShowError(this, "You have an old version of TWAINDSM.DLL. Please download latest version of this DLL from www.twain.org");
}
else
{
Messager.ShowError(this, ex);
}
EnableControls(false);
}
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="twSource">twSession</param>
/// <param name="format">文件格式字符串表示</param>
/// <param name="action">文件传输函数委托</param>
public ScanImageViewer(TwainSession twainSession, Int32 maxImageSize, int blanklimit, int resolution, TwFileFormat fileformat)
{
InitializeComponent();
twSession = twainSession;
worker = new BackgroundWorker();
worker.WorkerReportsProgress = true;
worker.WorkerSupportsCancellation = true;
cnt = 0;
this.buttonControl.DataContext = "传输未开始";
this.maxImageSize = maxImageSize;
this.blankSizeLimit = blanklimit;
this.resolution = resolution;
fileType = fileformat;
Init();
}
public TwainVM()
{
DataSources = new ObservableCollection <DataSourceVM>();
CapturedImages = new ObservableCollection <ImageSource>();
//this.SynchronizationContext = SynchronizationContext.Current;
var appId = TWIdentity.CreateFromAssembly(DataGroups.Image | DataGroups.Audio, Assembly.GetEntryAssembly());
session = new TwainSession(appId);
session.TransferError += Session_TransferError;
session.TransferReady += Session_TransferReady;
session.DataTransferred += Session_DataTransferred;
session.SourceDisabled += Session_SourceDisabled;
session.StateChanged += (s, e) => { RaisePropertyChanged(() => State); };
}
public List <ScanDevice> GetDeviceList(TwainImpl twainImpl)
{
PlatformInfo.Current.PreferNewDSM = twainImpl != TwainImpl.OldDsm;
var session = new TwainSession(TwainAppId);
session.Open();
try
{
return(session.GetSources().Select(ds => new ScanDevice(ds.Name, ds.Name)).ToList());
}
finally
{
session.Close();
}
}
private static TwainSession InitTwain()
{
var twain = new TwainSession(TWIdentity.CreateFromAssembly(DataGroups.Image, Assembly.GetExecutingAssembly()));
twain.TransferReady += (s, e) =>
{
Console.WriteLine("Got xfer ready on thread {0}.", Thread.CurrentThread.ManagedThreadId);
};
twain.SourceDisabled += (s, e) =>
{
Console.WriteLine("Source disabled on thread {0}.", Thread.CurrentThread.ManagedThreadId);
var rc = twain.CurrentSource.Close();
rc = twain.Close();
};
return twain;
}
private static TwainSession InitTwain()
{
var twain = new TwainSession(TWIdentity.CreateFromAssembly(DataGroups.Image, Assembly.GetExecutingAssembly()));
twain.TransferReady += (s, e) =>
{
Console.WriteLine("Got xfer ready on thread {0}.", Thread.CurrentThread.ManagedThreadId);
};
twain.SourceDisabled += (s, e) =>
{
Console.WriteLine("Source disabled on thread {0}.", Thread.CurrentThread.ManagedThreadId);
var rc = twain.CurrentSource.Close();
rc = twain.Close();
};
return(twain);
}
private void UpdateControls()
{
scanImageToolStripMenuItem.Enabled = twainSession != null && TwainSession.IsAvailable(this.Handle);
EnableControls(true);
dGV_Results.Rows.Clear();
dGV_Errors.Rows.Clear();
_tB_readonlyMRZCode.Lines = _reader.Lines;
if (rasterImageViewer1.Image != null)
{
selectedRect = _reader.Bounds;
}
else
{
selectedRect = LeadRect.Empty;
}
closeToolStripMenuItem.Enabled = true;
foreach (var item in _reader.Results)
{
DataGridViewRow row = new DataGridViewRow();
row.CreateCells(dGV_Results, ToReadbleString(item.Key.ToString()), item.Value.ReadableValue, item.Value.MrzCharacters);
row.Tag = item.Value;
if (!item.Value.IsValid)
{
row.DefaultCellStyle.BackColor = Color.Red;
DataGridViewRow errorRow = new DataGridViewRow();
errorRow.CreateCells(dGV_Errors, ToReadbleString(item.Key.ToString()) + " Is Invalid");
dGV_Errors.Rows.Add(errorRow);
}
dGV_Results.Rows.Add(row);
}
if (_reader.Errors != MRTDErrors.NoError)
{
foreach (var value in Enum.GetValues(typeof(MRTDErrors)))
{
if ((_reader.Errors & (MRTDErrors)value) == (MRTDErrors)value && (MRTDErrors)value != MRTDErrors.NoError)
{
DataGridViewRow row = new DataGridViewRow();
row.CreateCells(dGV_Errors, ToReadbleString(((MRTDErrors)value).ToString()));
row.Tag = ((MRTDErrors)value);
dGV_Errors.Rows.Add(row);
}
}
}
}
private void InitializeTwain()
{
// Determine whether a TWAIN source is installed
#if LEADTOOLS_V19_OR_LATER
_twainAvailable = TwainSession.IsAvailable(this.Handle);
#else
_twainAvailable = TwainSession.IsAvailable(this);
#endif // #if LEADTOOLS_V19_OR_LATER
if (_twainAvailable)
{
// Construct a new TwainSession object with default values
_twainSession = new TwainSession();
// Initialize the TWAIN session
// This method must be called before calling any other methods that require a TWAIN session
#if LEADTOOLS_V19_OR_LATER
_twainSession.Startup(this.Handle, "LEAD Technologies, Inc.", "LEAD Test Applications", "Version 1.0", "TWAIN Test Application", TwainStartupFlags.None);
#else
_twainSession.Startup(this, "LEAD Technologies, Inc.", "LEAD Test Applications", "Version 1.0", "TWAIN Test Application", TwainStartupFlags.None);
#endif // #if LEADTOOLS_V19_OR_LATER
// Set the AcquirePage Event handler
_twainSession.AcquirePage += new EventHandler <TwainAcquirePageEventArgs>(_twain_AcquirePage);
}
else
{
_miTwainSelectSource.Enabled = false;
_miTwainAcquire.Enabled = false;
_miTemplateLEAD.Enabled = false;
_miTemplateShowCaps.Enabled = false;
_miTemplateShowErrors.Enabled = false;
}
_twainerrorList = new ArrayList();
if (_mySettings._settings.TwainSelectedDevice != null)
{
try
{
_twainSession.SelectSource(_mySettings._settings.TwainSelectedDevice);
}
catch {}
}
}
private bool GetCapFromRange(IntPtr intPtr)
{
bool bret = true;
IntPtr tempPtr = TwainSession.GlobalLock(intPtr);
try
{
TwRangeIntegerOrBool range = (TwRangeIntegerOrBool)Marshal.PtrToStructure(tempPtr, typeof(TwRangeIntegerOrBool));
ArrayList list = new ArrayList();
//fix32类型
if (range.ItemType == TwType.Fix32)
{
TwRangeFix32 rangeFix32 = (TwRangeFix32)Marshal.PtrToStructure(tempPtr, typeof(TwRangeFix32));
// 特殊处理
if (rangeFix32.CurrentValue.Frac == 0 && rangeFix32.StepSize.Frac == 0)
{
rangeFix32.MinValue.Frac = 0;
}
for (long val = (long)rangeFix32.MinValue.ToFloat(); val <= (long)rangeFix32.MaxValue.ToFloat(); val += (long)rangeFix32.StepSize.ToFloat())
{
list.Add(val);
}
}
//UINT8 UINT16 UINT32 INT8 INT16 INT32类型
else
{
list = twSession.GetRangeDataList(range.ItemType, range.MinValue, range.MaxValue, range.StepSize); //对数据列表进行赋值
}
capType = range.ItemType;
valueList = list;
}
catch (Exception)
{
return(false);
}
finally
{
TwainSession.GlobalUnlock(tempPtr);
}
return(bret);
}
protected override ScanDevice PromptForDeviceInternal()
{
var session = new TwainSession(TwainAppId);
session.Open();
try
{
var ds = session.ShowSourceSelector();
if (ds == null)
{
return null;
}
string deviceId = ds.Name;
string deviceName = ds.Name;
return new ScanDevice(deviceId, deviceName);
}
finally
{
session.Close();
}
}
void Scan()
{
var identity = TWIdentity.CreateFromAssembly(DataGroups.Image, Assembly.GetEntryAssembly());
var twain = new TwainSession(identity);
twain.Open();
twain.DataTransferred += (s, e) =>
{
var stream = e.GetNativeImageStream();
var image = Image.FromStream(stream);
// Do things with the image...
};
var source = twain.First();
Console.WriteLine($"Scanning from {source.Name}...");
var openCode = source.Open();
Console.WriteLine($"Open: {openCode}");
source.Enable(SourceEnableMode.NoUI, false, IntPtr.Zero);
}
protected override ScanDevice PromptForDeviceInternal()
{
var session = new TwainSession(TwainAppId);
session.Open();
try
{
var ds = session.ShowSourceSelector();
if (ds == null)
{
return(null);
}
string deviceId = ds.Name;
string deviceName = ds.Name;
return(new ScanDevice(deviceId, deviceName));
}
finally
{
session.Close();
}
}
private void DispClear()
{
txtYear.Text = string.Empty;
txtMonth.Text = string.Empty;
txtScanner.Text = string.Empty;
txtTif.Text = string.Empty;
txtDat.Text = string.Empty;
cmbBkdels.Text = string.Empty;
if (TwainSession.IsAvailable(this))
{
btnScanner.Enabled = true;
txtScanner.Enabled = true;
txtScanner.Text = _twainSession.SelectedSourceName();
}
else
{
btnScanner.Enabled = false;
txtScanner.Enabled = false;
}
}
/// <summary>
/// 初始化
/// </summary>
/// <param name="twainSession">扫描管理对象</param>
/// <param name="capList">能力列表</param>
/// <returns></returns>
public bool Init(TwainSession twainSession, TwCap[] capList)
{
twSession = twainSession;
this.capList = capList;
// 连接数据源
if (!twainSession.OpenDS())
{
return(false);
}
capToControl = new Hashtable();
controlList = new Control[] {
ICAP_IXferMech,
CAP_DUPLEXENABLED,
ICAP_PixelType,
ICAP_XRESOLUTION,
ICAP_PIXELFLAVOR,
ICAP_THRESHOLD,
ICAP_IMAGEFILEFORMAT,
ICAP_COMPRESSION,
ICAP_BRIGHTNESS,
ICAP_CONTRAST,
ICAP_AUTOMATICBORDERDETECTION,
ICAP_AUTOMATICDESKEW,
ICAP_AUTODISCARDBLANKPAGES,
ECAP_PAPERSOURCE
};
// 设置控件和能力的对应关系
for (int i = 0; i < controlList.Length; i++)
{
capToControl.Add(capList[i], controlList[i]);
}
// 获取扫描仪能力并初始化
InitConfigUi();
return(true);
}
private static List <ScanDevice> InternalGetDeviceList(TwainImpl twainImpl)
{
PlatformInfo.Current.PreferNewDSM = twainImpl != TwainImpl.OldDsm;
var session = new TwainSession(TwainAppId);
session.Open();
try
{
return(session.GetSources().Select(ds => new ScanDevice(ds.Name, ds.Name)).ToList());
}
finally
{
try
{
session.Close();
}
catch (Exception e)
{
Log.ErrorException("Error closing TWAIN session", e);
}
}
}
private bool GetCapFromOneValue(IntPtr intPtr)
{
bool bret = true;
IntPtr tempPtr = TwainSession.GlobalLock(intPtr);
try
{
TwOneValueIntegerOrBool one = (TwOneValueIntegerOrBool)Marshal.PtrToStructure(tempPtr, typeof(TwOneValueIntegerOrBool));
IntPtr p = new IntPtr(tempPtr.ToInt32() + Marshal.SizeOf(one) - Marshal.SizeOf(one.Item));
capType = one.ItemType;
valueList = twSession.GetDataListFromPointer(one.ItemType, p, 1);
}
catch (Exception)
{
return(false);
}
finally
{
TwainSession.GlobalUnlock(tempPtr);
}
return(bret);
}
private bool GetCapFromArray(IntPtr intPtr)
{
bool bret = true;
IntPtr tempPtr = TwainSession.GlobalLock(intPtr);
try
{
TwArray array = (TwArray)Marshal.PtrToStructure(tempPtr, typeof(TwArray));
IntPtr p = new IntPtr(tempPtr.ToInt32() + Marshal.SizeOf(array) - Marshal.SizeOf(array.ItemList));
capType = array.ItemType;
valueList = twSession.GetDataListFromPointer(array.ItemType, p, array.NumItems);
}
catch (Exception)
{
return(false);
}
finally
{
TwainSession.GlobalUnlock(tempPtr);
}
return(bret);
}
static void Main(string[] args)
{
if (PlatformInfo.Current.IsApp64Bit)
{
Console.WriteLine("Platform: 64 bit");
}
else
{
Console.WriteLine("Platform: 32 bit");
}
var twain = new TwainSession(TWIdentity.CreateFromAssembly(DataGroups.Image, Assembly.GetExecutingAssembly()));
twain.Open();
Console.WriteLine("Listing TWAIN devices...");
foreach (var device in twain)
{
Console.WriteLine($"Device: {device.Name}");
Console.WriteLine($"\tId: {device.Id}");
Console.WriteLine($"\tManufacturer: {device.Manufacturer}");
Console.WriteLine($"\tProductFamily: {device.ProductFamily}");
Console.WriteLine($"\tProtocolVersion: {device.ProtocolVersion}");
}
twain.Close();
}
private void FormScan_Load(object sender, EventArgs e)
{
var appId = TWIdentity.CreateFromAssembly(DataGroups.Image, Assembly.GetExecutingAssembly());
session = new TwainSession(appId);
session.TransferReady += Session_TransferReady;
session.DataTransferred += Session_DataTransferred;
session.TransferError += Session_TransferError;
session.SourceDisabled += Session_SourceDisabled;
session.Open();
foreach (DataSource ds in session)
{
cboxScanner.Items.Add(ds.Name);
}
cboxScanner.Text = mSettings.ScannerName;
cbDuplex.Checked = mSettings.ScannerDuplex;
cboxFlipType.Text = mSettings.ScannerFlipType;
// FIXME: Allow BW pixel type
//cboxPixelType.Text = mSettings.ScannerPixelType;
cboxPixelType.Text = "Color";
cboxPixelType.Enabled = false;
}
/// <summary>
/// Initialize the application
/// </summary>
private void InitClass( )
{
// setup our caption
Messager.Caption = "LEADTOOLS for .NET C# Twain Multipage Demo";
Text = Messager.Caption;
// initialize the _viewer object
_viewer = new ImageViewer();
_viewer.Dock = DockStyle.Fill;
_viewer.BackColor = Color.DarkGray;
Controls.Add(_viewer);
_viewer.BringToFront();
// initialize the codecs object
_codecs = new RasterCodecs();
if (TwainSession.IsAvailable(this.Handle))
{
try
{
// setup the Twain session object
_twainSession = new TwainSession();
//For 32-bit driver support in 64-bit applications, use the following TWAIN initialization method instead:
//_twainSession.Startup(this.Handle, "LEAD Technologies, Inc.", "LEAD Twain .NET", "Version 14", "LEADTools Twain test sample", TwainStartupFlags.UseThunkServer);
// start up the Twain session
_twainSession.Startup(this.Handle, "LEAD Technologies, Inc.", "LEAD Twain .NET", "Version 14", "LEADTools Twain test sample", TwainStartupFlags.None);
}
catch (TwainException ex)
{
if (ex.Code == TwainExceptionCode.InvalidDll)
{
_miFileAcquire.Enabled = false;
_miFileAcquireCleanup.Enabled = false;
_miFileSelectSource.Enabled = false;
Messager.ShowError(this, "You have an old version of TWAINDSM.DLL. Please download latest version of this DLL from www.twain.org");
}
else
{
_miFileAcquire.Enabled = false;
_miFileAcquireCleanup.Enabled = false;
_miFileSelectSource.Enabled = false;
Messager.ShowError(this, ex);
}
}
catch (Exception ex)
{
Messager.ShowError(this, ex);
_miFileAcquire.Enabled = false;
_miFileAcquireCleanup.Enabled = false;
_miFileSelectSource.Enabled = false;
}
}
else
{
_miFileAcquire.Enabled = false;
_miFileAcquireCleanup.Enabled = false;
_miFileSelectSource.Enabled = false;
}
// setup the other variables
_fileName = string.Empty;
_fileFormat = RasterImageFormat.Tif;
_pageNo = 0;
UpdateMyControls();
UpdateStatusBarText();
}
protected override IEnumerable<IScannedImage> ScanInternal()
{
var session = new TwainSession(TwainAppId);
var twainForm = formFactory.Create<FTwainGui>();
var images = new List<IScannedImage>();
Exception error = null;
bool cancel = false;
DataSource ds = null;
session.TransferReady += (sender, eventArgs) =>
{
if (cancel)
{
eventArgs.CancelAll = true;
}
};
session.DataTransferred += (sender, eventArgs) =>
{
using (var output = Image.FromStream(eventArgs.GetNativeImageStream()))
{
double scaleFactor = 1;
if (!ScanSettings.UseNativeUI)
{
scaleFactor = ScanSettings.AfterScanScale.ToIntScaleFactor();
}
using (var result = ImageScaleHelper.ScaleImage(output, scaleFactor))
{
var bitDepth = output.PixelFormat == PixelFormat.Format1bppIndexed
? ScanBitDepth.BlackWhite
: ScanBitDepth.C24Bit;
images.Add(scannedImageFactory.Create(result, bitDepth, ScanSettings.MaxQuality));
}
}
};
session.TransferError += (sender, eventArgs) =>
{
error = eventArgs.Exception;
cancel = true;
twainForm.Close();
};
session.SourceDisabled += (sender, eventArgs) => twainForm.Close();
twainForm.Shown += (sender, eventArgs) =>
{
try
{
ReturnCode rc = session.Open(new WindowsFormsMessageLoopHook(DialogParent.Handle));
if (rc != ReturnCode.Success)
{
twainForm.Close();
return;
}
ds = session.FirstOrDefault(x => x.Name == ScanDevice.ID);
if (ds == null)
{
throw new DeviceNotFoundException();
}
rc = ds.Open();
if (rc != ReturnCode.Success)
{
twainForm.Close();
return;
}
ConfigureDS(ds);
var ui = ScanSettings.UseNativeUI ? SourceEnableMode.ShowUI : SourceEnableMode.NoUI;
rc = ds.Enable(ui, true, twainForm.Handle);
if (rc != ReturnCode.Success)
{
twainForm.Close();
}
}
catch (Exception ex)
{
error = ex;
twainForm.Close();
}
};
twainForm.ShowDialog(DialogParent);
if (ds != null && session.IsSourceOpen)
{
ds.Close();
}
if (session.IsDsmOpen)
{
session.Close();
}
if (error != null)
{
if (error is ScanDriverException)
{
throw error;
}
throw new ScanDriverUnknownException(error);
}
return images;
}
internal AudioNativeXfer(TwainSession session) : base(session)
{
}
internal Metrics(TwainSession session) : base(session)
{
}
public List<ScannedImage> Scan(IWin32Window dialogParent, bool activate, ScanDevice scanDevice, ScanProfile scanProfile, ScanParams scanParams)
{
if (scanProfile.TwainImpl == TwainImpl.Legacy)
{
return Legacy.TwainApi.Scan(scanProfile, scanDevice, dialogParent, formFactory);
}
var session = new TwainSession(TwainAppId);
var twainForm = formFactory.Create<FTwainGui>();
var images = new List<ScannedImage>();
Exception error = null;
bool cancel = false;
DataSource ds = null;
session.TransferReady += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - TransferReady");
if (cancel)
{
eventArgs.CancelAll = true;
}
};
session.DataTransferred += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - DataTransferred");
using (var output = Image.FromStream(eventArgs.GetNativeImageStream()))
{
using (var result = ScannedImageHelper.PostProcessStep1(output, scanProfile))
{
if (blankDetector.ExcludePage(result, scanProfile))
{
return;
}
var bitDepth = output.PixelFormat == PixelFormat.Format1bppIndexed
? ScanBitDepth.BlackWhite
: ScanBitDepth.C24Bit;
var image = new ScannedImage(result, bitDepth, scanProfile.MaxQuality, scanProfile.Quality);
ScannedImageHelper.PostProcessStep2(image, scanProfile);
if (scanParams.DetectPatchCodes)
{
foreach (var patchCodeInfo in eventArgs.GetExtImageInfo(ExtendedImageInfo.PatchCode))
{
if (patchCodeInfo.ReturnCode == ReturnCode.Success)
{
image.PatchCode = GetPatchCode(patchCodeInfo);
}
}
}
images.Add(image);
}
}
};
session.TransferError += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - TransferError");
if (eventArgs.Exception != null)
{
error = eventArgs.Exception;
}
else if (eventArgs.SourceStatus != null)
{
Log.Error("TWAIN Transfer Error. Return code = {0}; condition code = {1}; data = {2}.",
eventArgs.ReturnCode, eventArgs.SourceStatus.ConditionCode, eventArgs.SourceStatus.Data);
}
else
{
Log.Error("TWAIN Transfer Error. Return code = {0}.", eventArgs.ReturnCode);
}
cancel = true;
twainForm.Close();
};
session.SourceDisabled += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - SourceDisabled");
twainForm.Close();
};
twainForm.Shown += (sender, eventArgs) =>
{
if (activate)
{
// TODO: Set this flag based on whether NAPS2 already has focus
// http://stackoverflow.com/questions/7162834/determine-if-current-application-is-activated-has-focus
// Or maybe http://stackoverflow.com/questions/156046/show-a-form-without-stealing-focus
twainForm.Activate();
}
Debug.WriteLine("NAPS2.TW - TwainForm.Shown");
try
{
ReturnCode rc = session.Open(new WindowsFormsMessageLoopHook(dialogParent.Handle));
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Could not open session - {0}", rc);
twainForm.Close();
return;
}
ds = session.FirstOrDefault(x => x.Name == scanDevice.ID);
if (ds == null)
{
Debug.WriteLine("NAPS2.TW - Could not find DS - DS count = {0}", session.Count());
throw new DeviceNotFoundException();
}
rc = ds.Open();
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Could not open DS - {0}", rc);
twainForm.Close();
return;
}
ConfigureDS(ds, scanProfile, scanParams);
var ui = scanProfile.UseNativeUI ? SourceEnableMode.ShowUI : SourceEnableMode.NoUI;
Debug.WriteLine("NAPS2.TW - Enabling DS");
rc = ds.Enable(ui, true, twainForm.Handle);
Debug.WriteLine("NAPS2.TW - Enable finished");
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Enable failed - {0}, rc");
twainForm.Close();
}
}
catch (Exception ex)
{
Debug.WriteLine("NAPS2.TW - Error");
error = ex;
twainForm.Close();
}
};
Debug.WriteLine("NAPS2.TW - Showing TwainForm");
twainForm.ShowDialog(dialogParent);
Debug.WriteLine("NAPS2.TW - TwainForm closed");
if (ds != null && session.IsSourceOpen)
{
Debug.WriteLine("NAPS2.TW - Closing DS");
ds.Close();
}
if (session.IsDsmOpen)
{
Debug.WriteLine("NAPS2.TW - Closing session");
session.Close();
}
if (error != null)
{
Debug.WriteLine("NAPS2.TW - Throwing error - {0}", error);
if (error is ScanDriverException)
{
throw error;
}
throw new ScanDriverUnknownException(error);
}
return images;
}
protected override IEnumerable<IScannedImage> ScanInternal()
{
if (ScanProfile.TwainImpl == TwainImpl.Legacy)
{
return Legacy.TwainApi.Scan(ScanProfile, ScanDevice, DialogParent, formFactory, scannedImageFactory);
}
var session = new TwainSession(TwainAppId);
var twainForm = formFactory.Create<FTwainGui>();
var images = new List<IScannedImage>();
Exception error = null;
bool cancel = false;
DataSource ds = null;
session.TransferReady += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - TransferReady");
if (cancel)
{
eventArgs.CancelAll = true;
}
};
session.DataTransferred += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - DataTransferred");
using (var output = Image.FromStream(eventArgs.GetNativeImageStream()))
{
using (var result = ScannedImageHelper.PostProcessStep1(output, ScanProfile))
{
var bitDepth = output.PixelFormat == PixelFormat.Format1bppIndexed
? ScanBitDepth.BlackWhite
: ScanBitDepth.C24Bit;
var image = scannedImageFactory.Create(result, bitDepth, ScanProfile.MaxQuality, ScanProfile.Quality);
ScannedImageHelper.PostProcessStep2(image, ScanProfile);
if (ScanParams.DetectPatchCodes)
{
foreach (var patchCodeInfo in eventArgs.GetExtImageInfo(ExtendedImageInfo.PatchCode))
{
if (patchCodeInfo.ReturnCode == ReturnCode.Success)
{
image.PatchCode = GetPatchCode(patchCodeInfo);
}
}
}
images.Add(image);
}
}
};
session.TransferError += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - TransferError");
if (eventArgs.Exception != null)
{
error = eventArgs.Exception;
}
else if (eventArgs.SourceStatus != null)
{
Log.Error("TWAIN Transfer Error. Return code = {0}; condition code = {1}; data = {2}.",
eventArgs.ReturnCode, eventArgs.SourceStatus.ConditionCode, eventArgs.SourceStatus.Data);
}
else
{
Log.Error("TWAIN Transfer Error. Return code = {0}.", eventArgs.ReturnCode);
}
cancel = true;
twainForm.Close();
};
session.SourceDisabled += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - SourceDisabled");
twainForm.Close();
};
twainForm.Shown += (sender, eventArgs) =>
{
Debug.WriteLine("NAPS2.TW - TwainForm.Shown");
try
{
ReturnCode rc = session.Open(new WindowsFormsMessageLoopHook(DialogParent.Handle));
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Could not open session - {0}", rc);
twainForm.Close();
return;
}
ds = session.FirstOrDefault(x => x.Name == ScanDevice.ID);
if (ds == null)
{
Debug.WriteLine("NAPS2.TW - Could not find DS - DS count = {0}", session.Count());
throw new DeviceNotFoundException();
}
rc = ds.Open();
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Could not open DS - {0}", rc);
twainForm.Close();
return;
}
ConfigureDS(ds);
var ui = ScanProfile.UseNativeUI ? SourceEnableMode.ShowUI : SourceEnableMode.NoUI;
Debug.WriteLine("NAPS2.TW - Enabling DS");
rc = ds.Enable(ui, true, twainForm.Handle);
Debug.WriteLine("NAPS2.TW - Enable finished");
if (rc != ReturnCode.Success)
{
Debug.WriteLine("NAPS2.TW - Enable failed - {0}, rc");
twainForm.Close();
}
}
catch (Exception ex)
{
Debug.WriteLine("NAPS2.TW - Error");
error = ex;
twainForm.Close();
}
};
Debug.WriteLine("NAPS2.TW - Showing TwainForm");
twainForm.ShowDialog(DialogParent);
Debug.WriteLine("NAPS2.TW - TwainForm closed");
if (ds != null && session.IsSourceOpen)
{
Debug.WriteLine("NAPS2.TW - Closing DS");
ds.Close();
}
if (session.IsDsmOpen)
{
Debug.WriteLine("NAPS2.TW - Closing session");
session.Close();
}
if (error != null)
{
Debug.WriteLine("NAPS2.TW - Throwing error - {0}", error);
if (error is ScanDriverException)
{
throw error;
}
throw new ScanDriverUnknownException(error);
}
return images;
}
public override List<Image> Scan()
{
Console.WriteLine("Scan Twain");
lesImagesNum.Clear();
// can use the utility method to create appId or make one yourself
var appId = TWIdentity.CreateFromAssembly(DataGroups.Image, Assembly.GetExecutingAssembly());
// new it up and handle events
session = new TwainSession(appId);
session.TransferReady += session_TransferReady;
session.DataTransferred += session_DataTransferred;
session.SourceDisabled += session_SourceDisable;
// finally open it
session.Open();
var t = session.GetEnumerator();
Console.WriteLine(t.ToString());
while (t.MoveNext())
{
Console.WriteLine(t.ConvertToString());
}
// choose and open the first source found
// note that TwainSession implements IEnumerable<DataSource> so we can use this extension method.
IEnumerable<DataSource> lesSources = session.GetSources();
Console.WriteLine("Nb Source : " + session.Count());
myDS = session.FirstOrDefault();
myDS.Open();
// All low-level triplet operations are defined through these properties.
// If the operation you want is not available, that most likely means
// it's not for consumer use or it's been abstracted away with an equivalent API in this lib.
//myDS.DGControl;
//myDS.DGImage.;
// The wrapper has many methods that corresponds to the TWAIN capability triplet msgs like
// GetValues(), GetCurrent(), GetDefault(), SetValue(), etc.
// (see TWAIN spec for reference)
// This example sets pixel type of scanned image to BW and
// IPixelType is the wrapper property on the data source.
// The name of the wrapper property is the same as the CapabilityId enum.
PixelType typeCouleur = PixelType.Gray;
if (myDS.Capabilities.ICapPixelType.CanSet &&
myDS.Capabilities.ICapPixelType.GetValues().Contains(typeCouleur))
{
myDS.Capabilities.ICapPixelType.SetValue(typeCouleur);
}
//Même chose avec le DPI
TWFix32 DPI = MainWindow.numerisationDPI;
if(myDS.Capabilities.ICapXResolution.CanSet &&
myDS.Capabilities.ICapXResolution.GetValues().Contains(DPI))
{
myDS.Capabilities.ICapXResolution.SetValue(DPI);
}
if (myDS.Capabilities.ICapYResolution.CanSet &&
myDS.Capabilities.ICapYResolution.GetValues().Contains(DPI))
{
myDS.Capabilities.ICapYResolution.SetValue(DPI);
}
myDS.Enable(SourceEnableMode.ShowUI, false, System.IntPtr.Zero);
EventWaitHandle session_SourceDisable_Wait = new EventWaitHandle(false, EventResetMode.AutoReset);
session_SourceDisable_Wait.WaitOne();
return lesImagesNum;
}
