public static extern ReturnCode DsmWin32(
[In, Out] TW_IDENTITY origin,
[In, Out] TW_IDENTITY destination,
DataGroups dg,
DataArgumentType dat,
Message msg,
ref TW_STATUSUTF8 data);
public ReturnCode Get(ref TW_STATUS status, DataSource source, out string message)
{
message = null;
var rc = ReturnCode.Failure;
TW_STATUSUTF8 real = new TW_STATUSUTF8 {
Status = status
};
if (Is32Bit)
{
if (IsWin)
{
rc = NativeMethods.DsmWin32(Session.Config.App32, source?.Identity32,
DataGroups.Control, DataArgumentType.StatusUtf8, Message.Get, ref real);
}
else if (IsLinux)
{
rc = NativeMethods.DsmLinux32(Session.Config.App32, source?.Identity32,
DataGroups.Control, DataArgumentType.StatusUtf8, Message.Get, ref real);
}
else if (IsMac)
{
rc = NativeMethods.DsmMac32(Session.Config.App32, source?.Identity32,
DataGroups.Control, DataArgumentType.StatusUtf8, Message.Get, ref real);
}
}
else
{
if (IsWin)
{
rc = NativeMethods.DsmWin64(Session.Config.App32, source?.Identity32,
DataGroups.Control, DataArgumentType.StatusUtf8, Message.Get, ref real);
}
else if (IsLinux)
{
rc = NativeMethods.DsmLinux64(Session.Config.App32, source?.Identity32,
DataGroups.Control, DataArgumentType.StatusUtf8, Message.Get, ref real);
}
else if (IsMac)
{
rc = NativeMethods.DsmMac64(Session.Config.App32, source?.Identity32,
DataGroups.Control, DataArgumentType.StatusUtf8, Message.Get, ref real);
}
}
if (rc == ReturnCode.Success)
{
message = ReadUtf8String(ref real);
}
return(rc);
}
private string ReadUtf8String(ref TW_STATUSUTF8 status)
{
if (status.UTF8string != IntPtr.Zero)
{
try
{
IntPtr lockedPtr = Session.Config.MemoryManager.Lock(status.UTF8string);
var buffer = new byte[status.Size - 1];
Marshal.Copy(lockedPtr, buffer, 0, buffer.Length);
return(Encoding.UTF8.GetString(buffer));
}
finally
{
Session.Config.MemoryManager.Unlock(status.UTF8string);
Session.Config.MemoryManager.Free(status.UTF8string);
}
}
return(null);
}
/// <summary>
/// Get some text for an error...
/// </summary>
/// <param name="a_dg">Data group</param>
/// <param name="a_msg">Operation</param>
/// <param name="a_twstatusutf8">STATUSUTF8 structure</param>
/// <returns>TWAIN status</returns>
public STS DatStatusutf8(DG a_dg, MSG a_msg, ref TW_STATUSUTF8 a_twstatusutf8)
{
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.twstatusutf8 = a_twstatusutf8;
threaddata.dg = a_dg;
threaddata.msg = a_msg;
threaddata.dat = DAT.STATUSUTF8;
long lIndex = m_twaincommand.Submit(threaddata);
// Submit the command and wait for the reply...
CallerToThreadSet();
ThreadToCallerWaitOne();
// Return the result...
a_twstatusutf8 = m_twaincommand.Get(lIndex).twstatusutf8;
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.STATUSUTF8.ToString(), a_msg.ToString(), "");
}
// Windows...
if (ms_platform == Platform.WINDOWS)
{
// Issue the command...
try
{
if (m_blUseLegacyDSM)
{
sts = (STS)WindowsTwain32DsmEntryStatusutf8(ref m_twidentitylegacyApp, ref m_twidentitylegacyDs, a_dg, DAT.STATUSUTF8, a_msg, ref a_twstatusutf8);
}
else
{
sts = (STS)WindowsTwaindsmDsmEntryStatusutf8(ref m_twidentitylegacyApp, ref m_twidentitylegacyDs, a_dg, DAT.STATUSUTF8, a_msg, ref a_twstatusutf8);
}
}
catch
{
// The driver crashed...
Log.LogSendAfter(STS.BUMMER.ToString(), "");
return (STS.BUMMER);
}
}
// Linux...
else if (ms_platform == Platform.LINUX)
{
// Issue the command...
try
{
if (GetMachineWordBitSize() == 32)
{
sts = (STS)LinuxDsmEntryStatusutf8(ref m_twidentitylegacyApp, ref m_twidentitylegacyDs, a_dg, DAT.STATUSUTF8, a_msg, ref a_twstatusutf8);
}
else
{
sts = (STS)Linux64DsmEntryStatusutf8(ref m_twidentityApp, ref m_twidentityDs, a_dg, DAT.STATUSUTF8, a_msg, ref a_twstatusutf8);
}
}
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)MacosxDsmEntryStatusutf8(ref m_twidentitymacosxApp, ref m_twidentitymacosxDs, a_dg, DAT.STATUSUTF8, a_msg, ref a_twstatusutf8);
}
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(), "");
}
// All done...
return (AutoDatStatus(sts));
}
private static extern UInt16 MacosxDsmEntryStatusutf8
(
ref TW_IDENTITY_MACOSX origin,
ref TW_IDENTITY_MACOSX dest,
DG dg,
DAT dat,
MSG msg,
ref TW_STATUSUTF8 twstatusutf8
);
private static extern UInt16 Linux64DsmEntryStatusutf8
(
ref TW_IDENTITY origin,
ref TW_IDENTITY dest,
DG dg,
DAT dat,
MSG msg,
ref TW_STATUSUTF8 twstatusutf8
);
private static extern UInt16 WindowsTwaindsmDsmEntryStatusutf8
(
ref TW_IDENTITY_LEGACY origin,
ref TW_IDENTITY_LEGACY dest,
DG dg,
DAT dat,
MSG msg,
ref TW_STATUSUTF8 twstatusutf8
);