public static extern ReturnCode DsmWinNew(
[In, Out] TWIdentity origin,
[In, Out] TWIdentity destination,
DataGroups dg,
DataArgumentType dat,
Message msg,
[In, Out] TWSetupFileXfer data);
private void Session_TransferReady(object sender, TransferReadyEventArgs e)
{
var transferMechanism = Session.CurrentSource.Capabilities.ICapXferMech.GetCurrent();
if (transferMechanism == XferMech.File)
{
var formats = Session.CurrentSource.Capabilities.ICapImageFileFormat.GetValues();
var scannerImageFormat = formats.Contains(FileFormat.Tiff) ? FileFormat.Tiff : FileFormat.Bmp;
var fileSetup = new TWSetupFileXfer
{
Format = scannerImageFormat,
FileName = GetUniqueName(Path.GetTempPath(), "twain-test", "." + scannerImageFormat)
};
}
}
void Session_TransferReady(object sender, TransferReadyEventArgs e)
{
var mech = session.CurrentSource.Capabilities.ICapXferMech.GetCurrent();
if (mech == XferMech.File)
{
var formats = session.CurrentSource.Capabilities.ICapImageFileFormat.GetValues();
var wantFormat = formats.Contains(FileFormat.Tiff) ? FileFormat.Tiff : FileFormat.Bmp;
var fileSetup = new TWSetupFileXfer
{
Format = wantFormat,
FileName = GetUniqueName(Path.GetTempPath(), "twain-test", "." + wantFormat)
};
session.CurrentSource.DGControl.SetupFileXfer.Set(fileSetup);
}
}
public static ReturnCode DsmEntry(
TWIdentity origin,
TWIdentity destination,
Message msg,
TWSetupFileXfer data)
{
if (PlatformInfo.Current.IsWindows)
{
if (PlatformInfo.Current.UseNewWinDSM)
{
return(NativeMethods.DsmWinNew(origin, destination, DataGroups.Control, DataArgumentType.SetupFileXfer, msg, data));
}
else
{
return(NativeMethods.DsmWinOld(origin, destination, DataGroups.Control, DataArgumentType.SetupFileXfer, msg, data));
}
}
else if (PlatformInfo.Current.IsLinux)
{
return(NativeMethods.DsmLinux(origin, destination, DataGroups.Control, DataArgumentType.SetupFileXfer, msg, data));
}
throw new PlatformNotSupportedException();
}
public ReturnCode Set(TWSetupFileXfer setupFileXfer)
{
Session.VerifyState(4, 6, DataGroups.Control, DataArgumentType.SetupFileXfer, Message.Set);
return(Dsm.DsmEntry(Session.AppId, Session.CurrentSource.Identity, Message.Set, setupFileXfer));
}
public ReturnCode GetDefault(out TWSetupFileXfer setupFileXfer)
{
Session.VerifyState(4, 6, DataGroups.Control, DataArgumentType.SetupFileXfer, Message.GetDefault);
setupFileXfer = new TWSetupFileXfer();
return(Dsm.DsmEntry(Session.AppId, Session.CurrentSource.Identity, Message.GetDefault, setupFileXfer));
}
public static string ChangeExtensionByFormat(this TWSetupFileXfer fileInfo, string currentFilePath)
{
string finalFile = null;
switch (fileInfo.Format)
{
case FileFormat.Bmp:
finalFile = Path.ChangeExtension(currentFilePath, ".bmp");
break;
case FileFormat.Dejavu:
finalFile = Path.ChangeExtension(currentFilePath, ".dejavu");
break;
case FileFormat.Exif:
finalFile = Path.ChangeExtension(currentFilePath, ".exit");
break;
case FileFormat.Fpx:
finalFile = Path.ChangeExtension(currentFilePath, ".fpx");
break;
case FileFormat.Jfif:
finalFile = Path.ChangeExtension(currentFilePath, ".jpg");
break;
case FileFormat.Jp2:
finalFile = Path.ChangeExtension(currentFilePath, ".jp2");
break;
case FileFormat.Jpx:
finalFile = Path.ChangeExtension(currentFilePath, ".jpx");
break;
case FileFormat.Pdf:
case FileFormat.PdfA:
case FileFormat.PdfA2:
finalFile = Path.ChangeExtension(currentFilePath, ".pdf");
break;
case FileFormat.Pict:
finalFile = Path.ChangeExtension(currentFilePath, ".pict");
break;
case FileFormat.Png:
finalFile = Path.ChangeExtension(currentFilePath, ".png");
break;
case FileFormat.Spiff:
finalFile = Path.ChangeExtension(currentFilePath, ".spiff");
break;
case FileFormat.Tiff:
case FileFormat.TiffMulti:
finalFile = Path.ChangeExtension(currentFilePath, ".tif");
break;
case FileFormat.Xbm:
finalFile = Path.ChangeExtension(currentFilePath, ".xbm");
break;
default:
finalFile = Path.ChangeExtension(currentFilePath, ".unknown");
break;
}
return(finalFile);
}