public static extern ReturnCode DsmWin32(
[In, Out] TW_IDENTITY origin,
[In, Out] TW_IDENTITY destination,
DataGroups dg,
DataArgumentType dat,
Message msg,
ref TW_IMAGELAYOUT data);
/// <summary>
/// Get/Set layout information...
/// </summary>
/// <param name="a_dg">Data group</param>
/// <param name="a_msg">Operation</param>
/// <param name="a_twimagelayout">IMAGELAYOUT structure</param>
/// <returns>TWAIN status</returns>
public STS DatImagelayout(DG a_dg, MSG a_msg, ref TW_IMAGELAYOUT a_twimagelayout)
{
STS sts;
// Submit the work to the TWAIN thread...
if ((m_threadTwain != null) && (m_threadTwain.ManagedThreadId != Thread.CurrentThread.ManagedThreadId))
{
lock (m_lockTwain)
{
// Set our command variables...
ThreadData threaddata = default(ThreadData);
threaddata.twimagelayout = a_twimagelayout;
threaddata.dg = a_dg;
threaddata.msg = a_msg;
threaddata.dat = DAT.IMAGELAYOUT;
long lIndex = m_twaincommand.Submit(threaddata);
// Submit the command and wait for the reply...
CallerToThreadSet();
ThreadToCallerWaitOne();
// Return the result...
a_twimagelayout = m_twaincommand.Get(lIndex).twimagelayout;
sts = m_twaincommand.Get(lIndex).sts;
// Clear the command variables...
m_twaincommand.Delete(lIndex);
}
return (sts);
}
// Log it...
if (Log.GetLevel() > 0)
{
Log.LogSendBefore(a_dg.ToString(), DAT.IMAGELAYOUT.ToString(), a_msg.ToString(), ImagelayoutToCsv(a_twimagelayout));
}
// Windows...
if (ms_platform == Platform.WINDOWS)
{
// Issue the command...
try
{
if (m_blUseLegacyDSM)
{
sts = (STS)WindowsTwain32DsmEntryImagelayout(ref m_twidentitylegacyApp, ref m_twidentitylegacyDs, a_dg, DAT.IMAGELAYOUT, a_msg, ref a_twimagelayout);
}
else
{
sts = (STS)WindowsTwaindsmDsmEntryImagelayout(ref m_twidentitylegacyApp, ref m_twidentitylegacyDs, a_dg, DAT.IMAGELAYOUT, a_msg, ref a_twimagelayout);
}
}
catch
{
// The driver crashed...
Log.LogSendAfter(STS.BUMMER.ToString(), "");
return (STS.BUMMER);
}
}
// Linux...
else if (ms_platform == Platform.LINUX)
{
// Issue the command...
try
{
if (TWAIN.GetMachineWordBitSize() == 32)
{
sts = (STS)LinuxDsmEntryImagelayout(ref m_twidentitylegacyApp, ref m_twidentitylegacyDs, a_dg, DAT.IMAGELAYOUT, a_msg, ref a_twimagelayout);
}
else
{
sts = (STS)Linux64DsmEntryImagelayout(ref m_twidentityApp, ref m_twidentityDs, a_dg, DAT.IMAGELAYOUT, a_msg, ref a_twimagelayout);
}
}
catch
{
// The driver crashed...
Log.LogSendAfter(STS.BUMMER.ToString(), "");
return (STS.BUMMER);
}
}
// Mac OS X, which has to be different...
else if (ms_platform == Platform.MACOSX)
{
// Issue the command...
try
{
sts = (STS)MacosxDsmEntryImagelayout(ref m_twidentitymacosxApp, ref m_twidentitymacosxDs, a_dg, DAT.IMAGELAYOUT, a_msg, ref a_twimagelayout);
}
catch
{
// The driver crashed...
Log.LogSendAfter(STS.BUMMER.ToString(), "");
return (STS.BUMMER);
}
}
// Uh-oh...
else
{
Log.LogSendAfter(STS.BUMMER.ToString(), "");
return (STS.BUMMER);
}
// Log it...
if (Log.GetLevel() > 0)
{
Log.LogSendAfter(sts.ToString(), ImagelayoutToCsv(a_twimagelayout));
}
// All done...
return (AutoDatStatus(sts));
}
/// <summary>
/// Convert the contents of a string to an image layout structure...
/// </summary>
/// <param name="a_twimagelayout">A TWAIN structure</param>
/// <param name="a_szImagelayout">A CSV string of the TWAIN structure</param>
/// <returns>True if the conversion is successful</returns>
public bool CsvToImagelayout(ref TW_IMAGELAYOUT a_twimagelayout, string a_szImagelayout)
{
// Init stuff...
a_twimagelayout = default(TW_IMAGELAYOUT);
// Build the string...
try
{
string[] asz = CSV.Parse(a_szImagelayout);
// Sort out the frame...
a_twimagelayout.Frame.Left.Whole = (short)double.Parse(asz[0]);
a_twimagelayout.Frame.Left.Frac = (ushort)((double.Parse(asz[0]) - (double)a_twimagelayout.Frame.Left.Whole) * 65536.0);
a_twimagelayout.Frame.Top.Whole = (short)double.Parse(asz[1]);
a_twimagelayout.Frame.Top.Frac = (ushort)((double.Parse(asz[1]) - (double)a_twimagelayout.Frame.Top.Whole) * 65536.0);
a_twimagelayout.Frame.Right.Whole = (short)double.Parse(asz[2]);
a_twimagelayout.Frame.Right.Frac = (ushort)((double.Parse(asz[2]) - (double)a_twimagelayout.Frame.Right.Whole) * 65536.0);
a_twimagelayout.Frame.Bottom.Whole = (short)double.Parse(asz[3]);
a_twimagelayout.Frame.Bottom.Frac = (ushort)((double.Parse(asz[3]) - (double)a_twimagelayout.Frame.Bottom.Whole) * 65536.0);
// And now the counters...
a_twimagelayout.DocumentNumber = (uint)int.Parse(asz[4]);
a_twimagelayout.PageNumber = (uint)int.Parse(asz[5]);
a_twimagelayout.FrameNumber = (uint)int.Parse(asz[6]);
}
catch
{
return (false);
}
// All done...
return (true);
}
/// <summary>
/// Convert the contents of a image layout to a string that we can show in
/// our simple GUI...
/// </summary>
/// <param name="a_twimagelayout">A TWAIN structure</param>
/// <returns>A CSV string of the TWAIN structure</returns>
public string ImagelayoutToCsv(TW_IMAGELAYOUT a_twimagelayout)
{
try
{
CSV csv = new CSV();
csv.Add(((double)a_twimagelayout.Frame.Left.Whole + ((double)a_twimagelayout.Frame.Left.Frac / 65536.0)).ToString());
csv.Add(((double)a_twimagelayout.Frame.Top.Whole + ((double)a_twimagelayout.Frame.Top.Frac / 65536.0)).ToString());
csv.Add(((double)a_twimagelayout.Frame.Right.Whole + ((double)a_twimagelayout.Frame.Right.Frac / 65536.0)).ToString());
csv.Add(((double)a_twimagelayout.Frame.Bottom.Whole + ((double)a_twimagelayout.Frame.Bottom.Frac / 65536.0)).ToString());
csv.Add(a_twimagelayout.DocumentNumber.ToString());
csv.Add(a_twimagelayout.PageNumber.ToString());
csv.Add(a_twimagelayout.FrameNumber.ToString());
return (csv.Get());
}
catch
{
return ("***error***");
}
}
private static extern UInt16 MacosxDsmEntryImagelayout
(
ref TW_IDENTITY_MACOSX origin,
ref TW_IDENTITY_MACOSX dest,
DG dg,
DAT dat,
MSG msg,
ref TW_IMAGELAYOUT twimagelayout
);
private static extern UInt16 Linux64DsmEntryImagelayout
(
ref TW_IDENTITY origin,
ref TW_IDENTITY dest,
DG dg,
DAT dat,
MSG msg,
ref TW_IMAGELAYOUT twimagelayout
);
private static extern UInt16 WindowsTwaindsmDsmEntryImagelayout
(
ref TW_IDENTITY_LEGACY origin,
ref TW_IDENTITY_LEGACY dest,
DG dg,
DAT dat,
MSG msg,
ref TW_IMAGELAYOUT twimagelayout
);
