public TwainProxy(ITwainApplication app)
{
this.disposed = false;
this.state = TwainState.PreSession;
this.availableSources = new List <TwainStructs.Identity>();
this.defaultSourceIndex = -1;
this.latestDIB = IntPtr.Zero;
this.appId = new TwainStructs.Identity();
appId.Id = 0U;
appId.Version.MajorNum = 1;
appId.Version.MinorNum = 0;
appId.Version.Country = TwainConstants.TWCY_USA;
appId.Version.Language = TwainConstants.TWLG_ENGLISH_USA;
appId.Version.Info = string.Format("TwainProxy v{0}", typeof(TwainProxy).Assembly.GetName().Version.ToString(4));
appId.Manufacturer = "null54";
appId.ProductFamily = "TwainablePlus";
appId.ProductName = "TwainProxy";
appId.ProtocolMajor = TwainConstants.ProtocolMajor;
appId.ProtocolMinor = TwainConstants.ProtocolMinor;
appId.SupportedGroups = (uint)(DataGroup.Control | DataGroup.Image);
this.deviceId = new TwainStructs.Identity();
this.parentWindowHandle = app.WindowHandle;
this.hostApp = app;
}
private void EnumAvailableSources()
{
if (OpenSourceManager())
{
TwainStructs.Identity defaultSource = new TwainStructs.Identity();
ResultCode rc = DSMIdentity(DataGroup.Control, TwainMessages.GetDefault, ref defaultSource);
if (rc == ResultCode.Success)
{
TwainStructs.Identity source = new TwainStructs.Identity();
rc = DSMIdentity(DataGroup.Control, TwainMessages.GetFirst, ref source);
if (rc == ResultCode.Success)
{
do
{
this.availableSources.Add(source);
rc = DSMIdentity(DataGroup.Control, TwainMessages.GetNext, ref source);
} while (rc == ResultCode.Success);
this.availableSources.Sort(new TwainIdentityComparer());
this.defaultSourceIndex = this.availableSources.FindIndex(i => i.ProductName == defaultSource.ProductName);
}
}
}
}
public void SetSelectedSource(int index)
{
if (state == TwainState.SourceManagerOpen)
{
this.deviceId = this.availableSources[index];
if (index != defaultSourceIndex)
{
ResultCode rc = DSMIdentity(DataGroup.Control, TwainMessages.Set, ref deviceId);
#if DEBUG
if (rc == ResultCode.Failure)
{
TwainStructs.Status status = new TwainStructs.Status();
DSMStatus(ref status);
System.Diagnostics.Debug.WriteLine(status.ConditionCode);
}
#endif
}
}
}
private ResultCode DSMIdentity(DataGroup group, ushort msg, ref TwainStructs.Identity ident)
{
ResultCode rc = twainIdentity(ref appId, IntPtr.Zero, group, DataArgumentType.Identity, msg, ref ident);
return(rc);
}
