/// <summary>
/// Every Source is required to have a single entry point called DS_Entry. DS_Entry is only called by the Source Manager.
/// </summary>
/// <param name="appId">This points to a TwIdentity structure, allocated by the application, that describes the
/// application making the call. One of the fields in this structure, called Id, is an arbitrary and
/// unique identifier assigned by the Source Manager to tag the application as a unique TWAIN
/// entity. The Source Manager maintains a copy of the application’s identity structure, so the
/// application must not modify that structure unless it first breaks its connection with the Source
/// Manager,then reconnects to cause the Source Manager to store the new, modified identity.</param>
/// <param name="dg">The Data Group of the operation triplet. Currently, only DG_CONTROL, DG_IMAGE, and DG_AUDIO are defined.</param>
/// <param name="dat">The Data Argument Type of the operation triplet.</param>
/// <param name="msg">The Message of the operation triplet.</param>
/// <param name="data">The pData parameter is a pointer to the data (a variable or, more
/// typically, a structure) that will be used according to the action specified by the operation
/// triplet.</param>
/// <returns>TWAIN Return Codes.</returns>
public TwRC ProcessRequest(TwIdentity appId, TwDG dg, TwDAT dat, TwMSG msg, IntPtr data)
{
try {
if (dg == TwDG.Control)
{
switch (dat)
{
case TwDAT.Identity:
return(this._IdentityControlProcessRequest(appId, msg, data));
case TwDAT.Status:
return(this._StatusControlProcessRequest(appId, msg, data));
case TwDAT.EntryPoint:
return(this._EntryPointControlProcessRequest(appId, msg, Marshal.PtrToStructure(data, typeof(TwEntryPoint)) as TwEntryPoint));
}
}
this._SetConditionCode(appId, TwCC.Success);
return(this._handlers[appId.Id].ProcessRequest(dg, dat, msg, data));
} catch (DataSourceException ex) {
DataSourceServices._ToLog(ex);
this._SetConditionCode(appId, ex.ConditionCode);
return(ex.ReturnCode);
} catch (Exception ex) {
DataSourceServices._ToLog(ex);
}
this._SetConditionCode(appId, TwCC.OperationError);
return(TwRC.Failure);
}
private TwRC DSMparent(TwIdentity origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, ref IntPtr refptr)
{
if (IntPtr.Size == 8)
{
return(Twain64.DSMparent(origin, zeroptr, dg, dat, msg, ref refptr));
}
else
{
return(Twain32.DSMparent(origin, zeroptr, dg, dat, msg, ref refptr));
}
}
private TwRC DSuserif(TwIdentity origin, TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, TwUserInterface guif)
{
if (IntPtr.Size == 8)
{
return(Twain64.DSuserif(origin, dest, dg, dat, msg, guif));
}
else
{
return(Twain32.DSuserif(origin, dest, dg, dat, msg, guif));
}
}
private TwRC DSMident(TwIdentity origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, TwIdentity idds)
{
if (IntPtr.Size == 8)
{
return(Twain64.DSMident(origin, zeroptr, dg, dat, msg, idds));
}
else
{
return(Twain32.DSMident(origin, zeroptr, dg, dat, msg, idds));
}
}
private TwRC DSevent(TwIdentity origin, TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, ref TwEvent evt)
{
if (IntPtr.Size == 8)
{
return(Twain64.DSevent(origin, dest, dg, dat, msg, ref evt));
}
else
{
return(Twain32.DSevent(origin, dest, dg, dat, msg, ref evt));
}
}
private TwRC DSiinf(TwIdentity origin, TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, TwImageInfo imginf)
{
if (IntPtr.Size == 8)
{
return(Twain64.DSiinf(origin, dest, dg, dat, msg, imginf));
}
else
{
return(Twain32.DSiinf(origin, dest, dg, dat, msg, imginf));
}
}
private TwRC DSixfer(TwIdentity origin, TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, ref IntPtr hbitmap)
{
if (IntPtr.Size == 8)
{
return(Twain64.DSixfer(origin, dest, dg, dat, msg, ref hbitmap));
}
else
{
return(Twain32.DSixfer(origin, dest, dg, dat, msg, ref hbitmap));
}
}
private TwRC DSpxfer(TwIdentity origin, TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, TwPendingXfers pxfr)
{
if (IntPtr.Size == 8)
{
return(Twain64.DSpxfer(origin, dest, dg, dat, msg, pxfr));
}
else
{
return(Twain32.DSpxfer(origin, dest, dg, dat, msg, pxfr));
}
}
private TwRC DScap(TwIdentity origin, TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, TwCapability capa)
{
if (IntPtr.Size == 8)
{
return(Twain64.DScap(origin, dest, dg, dat, msg, capa));
}
else
{
return(Twain32.DScap(origin, dest, dg, dat, msg, capa));
}
}
/// <summary>
/// Invoked to processing a TWAIN operations (Triplets).
/// </summary>
/// <param name="dg">The Data Group of the operation triplet. Currently, only DG_CONTROL, DG_IMAGE, and DG_AUDIO are defined.</param>
/// <param name="dat">The Data Argument Type of the operation triplet.</param>
/// <param name="msg">The Message of the operation triplet.</param>
/// <param name="data">The pData parameter is a pointer to the data (a variable or, more
/// typically, a structure) that will be used according to the action specified by the operation
/// triplet.</param>
/// <returns>
/// TWAIN Return Codes.
/// </returns>
/// <exception cref="DataSourceException">
/// </exception>
protected override TwRC OnProcessRequest(TwDG dg, TwDAT dat, TwMSG msg, IntPtr data)
{
if (dg == TwDG.Image)
{
switch (dat)
{
case TwDAT.ImageLayout:
return(this._ImageLayoutProcessRequest(msg, data));
case TwDAT.ImageInfo:
if ((this.State & DataSourceState.Ready) != 0)
{
return(this._ImageInfoProcessRequest(msg, data));
}
throw new DataSourceException(TwRC.Failure, TwCC.SeqError);
case TwDAT.ImageNativeXfer:
if ((this.State & DataSourceState.Ready) != 0)
{
return(this._ImageNativeXferProcessRequest(msg, data));
}
throw new DataSourceException(TwRC.Failure, TwCC.SeqError);
case TwDAT.ImageMemXfer:
if ((this.State & DataSourceState.Ready) != 0)
{
return(this._ImageMemXferProcessRequest(msg, data, false));
}
throw new DataSourceException(TwRC.Failure, TwCC.SeqError);
case TwDAT.ImageMemFileXfer:
if ((this.State & DataSourceState.Ready) != 0)
{
return(this._ImageMemXferProcessRequest(msg, data, true));
}
throw new DataSourceException(TwRC.Failure, TwCC.SeqError);
case TwDAT.ImageFileXfer:
if ((this.State & DataSourceState.Ready) != 0)
{
return(this._ImageFileXferProcessRequest(msg));
}
throw new DataSourceException(TwRC.Failure, TwCC.SeqError);
}
}
return(base.OnProcessRequest(dg, dat, msg, data));
}
/// <summary>
/// Every Source is required to have a single entry point called DS_Entry. DS_Entry is only called by the Source Manager.
/// </summary>
/// <param name="appId">
/// This points to a TwIdentity structure, allocated by the application, that describes the
/// application making the call. One of the fields in this structure, called Id, is an arbitrary and
/// unique identifier assigned by the Source Manager to tag the application as a unique TWAIN
/// entity. The Source Manager maintains a copy of the application’s identity structure, so the
/// application must not modify that structure unless it first breaks its connection with the Source
/// Manager,then reconnects to cause the Source Manager to store the new, modified identity.
/// </param>
/// <param name="dg">The Data Group of the operation triplet. Currently, only DG_CONTROL, DG_IMAGE, and DG_AUDIO are defined.</param>
/// <param name="dat">The Data Argument Type of the operation triplet.</param>
/// <param name="msg">The Message of the operation triplet.</param>
/// <param name="data">
/// The pData parameter is a pointer to the data (a variable or, more
/// typically, a structure) that will be used according to the action specified by the operation
/// triplet.
/// </param>
/// <returns>TWAIN Return Codes.</returns>
public TwRC ProcessRequest(TwIdentity appId, TwDG dg, TwDAT dat, TwMSG msg, IntPtr data)
{
if (this.AppIdentity == null)
{
this.AppIdentity = appId;
}
if (this.AppIdentity.Id != appId.Id)
{
throw new DataSourceException(TwRC.Failure, TwCC.OperationError);
}
if (!this.SupportedDataCodes.Contains(dat))
{
throw new DataSourceException(TwRC.Failure, TwCC.OperationError);
}
if (dg == TwDG.Control)
{
switch (dat)
{
case TwDAT.Event:
return(this._EventProcessRequest(msg, data));
case TwDAT.UserInterface:
return(this._UserInterfaceProcessRequest(msg, data));
case TwDAT.XferGroup:
return(this._XferGroupProcessRequest(msg, data));
case TwDAT.Capability:
return(this._CapabilityProcessRequest(msg, data));
case TwDAT.PendingXfers:
return(this._PendingXfersProcessRequest(msg, data));
case TwDAT.SetupMemXfer:
return(this._SetupMemXferProcessRequest(msg, data));
case TwDAT.SetupFileXfer:
return(this._SetupFileXferProcessRequest(msg, data));
}
}
return(this.OnProcessRequest(dg, dat, msg, data));
}
private static extern TwRC DScap([In, Out] TW_IDENTITY origin, [In] TW_IDENTITY dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwCapability capa);
private TwRC DsImageLayuot([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg,
[In, Out] TwImageLayout imageLayuot)
{
using (new MessageBoxHook())
{
return _DsImageLayuot(origin, dest, dg, dat, msg, imageLayuot);
}
}
private TwRC DsPendingXfer([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg,
[In, Out] TwPendingXfers pxfr)
{
using (new MessageBoxHook())
{
return _DsPendingXfer(origin, dest, dg, dat, msg, pxfr);
}
}
private TwRC DsImageXfer([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg,
ref IntPtr hbitmap)
{
using (new MessageBoxHook())
{
return _DsImageXfer(origin, dest, dg, dat, msg, ref hbitmap);
}
}
private TwRC DsCap([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg,
[In, Out] TwCapability capa)
{
using (new MessageBoxHook())
{
return _DsCap(origin, dest, dg, dat, msg, capa);
}
}
private static extern TwRC DSMparent([In, Out] TW_IDENTITY origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, ref IntPtr refptr);
private static extern TwRC DSixfer([In, Out] TW_IDENTITY origin, [In] TW_IDENTITY dest, TwDG dg, TwDAT dat, TwMSG msg, ref IntPtr hbitmap);
private TwRC DsmIdent([In, Out] TwIdentity origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg,
[In, Out] TwIdentity idds)
{
using (new MessageBoxHook())
{
return _DsmIdent(origin, zeroptr, dg, dat, msg, idds);
}
}
private TwRC DsmParent([In, Out] TwIdentity origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg,
ref IntPtr refptr)
{
using (new MessageBoxHook())
{
return _DsmParent(origin, zeroptr, dg, dat, msg, ref refptr);
}
}
private static extern TwRC DSpxfer([In, Out] TW_IDENTITY origin, [In] TW_IDENTITY dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TW_PENDINGXFERS pxfr);
private static extern TwRC DSixfer([In, Out] TW_IDENTITY origin, [In] TW_IDENTITY dest, TwDG dg, TwDAT dat, TwMSG msg, ref IntPtr hbitmap);
private static extern TwRC DSiinf([In, Out] TW_IDENTITY origin, [In] TW_IDENTITY dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TW_IMAGEINFO imginf);
private static extern TwRC DScap([In, Out] TW_IDENTITY origin, [In] TW_IDENTITY dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwCapability capa);
private static extern TwRC DSevent([In, Out] TW_IDENTITY origin, [In, Out] TW_IDENTITY dest, TwDG dg, TwDAT dat, TwMSG msg, ref TW_EVENT evt);
private static extern TwRC DSiinf([In, Out] TW_IDENTITY origin, [In] TW_IDENTITY dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TW_IMAGEINFO imginf);
private TwRC DsStatus([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg,
[In, Out] TwStatus dsmstat)
{
using (new MessageBoxHook())
{
return _DsStatus(origin, dest, dg, dat, msg, dsmstat);
}
}
private static extern TwRC DSMident([In, Out] TW_IDENTITY origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TW_IDENTITY idds);
public static extern TwRC DSMident([In, Out] TwIdentity origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwIdentity idds);
private static extern TwRC DSMstatus([In, Out] TW_IDENTITY origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TW_STATUS dsmstat);
private static extern TwRC DSpxfer([In, Out] TW_IDENTITY origin, [In] TW_IDENTITY dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TW_PENDINGXFERS pxfr);
private static extern TwRC DSpxfer([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwPendingXfers pxfr);
public TwRC ProcessRequest(TwDG dg, TwDAT dat, TwMSG msg, IntPtr data)
{
return(this.Handler.ProcessRequest(this.Application.Identity, dg, dat, msg, data));
}
private static extern TwRC DScap([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwCapability capa);
private static extern TwRC DSiinf([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwImageInfo imginf);
private static extern TwRC DSMstatus([In, Out] TwIdentity origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwStatus dsmstat);
private static extern TwRC DSevent([In, Out] TwIdentity origin, [In, Out] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, ref TwEvent evt);
public static extern TwRC DSuserif([In, Out] TwIdentity origin, [In, Out] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, TwUserInterface guif);
public static extern TwRC DSevent([In, Out] TwIdentity origin, [In, Out] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, ref TwEvent evt);
private static extern TwRC DSstatus([In, Out] TW_IDENTITY origin, [In] TW_IDENTITY dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TW_STATUS dsmstat);
public static extern TwRC DSMstatus([In, Out] TwIdentity origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwStatus dsmstat);
public static extern TwRC DSMparent([In, Out] TwIdentity origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, ref IntPtr refptr);
private static extern TwRC DSuserif([In, Out] TW_IDENTITY origin, [In, Out] TW_IDENTITY dest, TwDG dg, TwDAT dat, TwMSG msg, TW_USERINTERFACE guif);
private static extern TwRC DSstatus([In, Out] TW_IDENTITY origin, [In] TW_IDENTITY dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TW_STATUS dsmstat);
private static extern TwRC DSMparent([In, Out] TwIdentity origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, ref IntPtr refptr);
public static extern TwRC DSstatus([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwStatus dsmstat);
private static extern TwRC DSMident([In, Out] TwIdentity origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwIdentity idds);
public static extern TwRC DScap([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwCapability capa);
private static extern TwRC DSuserif([In, Out] TwIdentity origin, [In, Out] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, TwUserInterface guif);
public static extern TwRC DSiinf([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwImageInfo imginf);
private static extern TwRC DSstatus([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwStatus dsmstat);
public static extern TwRC DSilayout([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwImageLayout value);
private static extern TwRC DScap([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwSetupFileXFfer setupFileXFfer);
public static extern TwRC DSixfer([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, ref IntPtr hbitmap);
private static extern TwRC DSixfer([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, ref IntPtr hbitmap);
public static extern TwRC DSpxfer([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwPendingXfers pxfr);
private static extern TwRC DSpxfer([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, TwSetupFileXfers sfxfr);
public static extern TwRC DScustomData([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwCustomDsData data);
private static extern TwRC DSevent([In, Out] TW_IDENTITY origin, [In, Out] TW_IDENTITY dest, TwDG dg, TwDAT dat, TwMSG msg, ref TW_EVENT evt);
private TwRC DsUI([In, Out] TwIdentity origin, [In, Out] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg,
TwUserInterface guif)
{
using (new MessageBoxHook())
{
return _DsUI(origin, dest, dg, dat, msg, guif);
}
}
