public Principal(string direccion)
{
_dir = direccion;
tw = new TwainLib.Twain();
tw.Init(this.Handle);
}
public Principal()
{
_dir = System.IO.Path.GetTempPath() + "\\";
tw = new TwainLib.Twain();
tw.Init(this.Handle);
}
public void Finish()
{
this.CloseSrc();
if (this.appid.Id != IntPtr.Zero)
{
TwRC twRC = Twain.DSMparent(this.appid, IntPtr.Zero, TwDG.Control, TwDAT.Parent, TwMSG.CloseDSM, ref this.hwnd);
}
this.appid.Id = IntPtr.Zero;
}
public void CloseSrc()
{
if (this.srcds.Id != IntPtr.Zero)
{
TwUserInterface guif = new TwUserInterface();
TwRC twRC = Twain.DSuserif(this.appid, this.srcds, TwDG.Control, TwDAT.UserInterface, TwMSG.DisableDS, guif);
twRC = Twain.DSMident(this.appid, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.CloseDS, this.srcds);
}
}
public TwCapability(TwCap cap, short sval)
{
Cap = (short)cap;
ConType = (short)TwOn.One;
Handle = Twain.GlobalAlloc(0x42, 6);
IntPtr pv = Twain.GlobalLock(Handle);
Marshal.WriteInt16(pv, 0, (short)TwType.Int16);
Marshal.WriteInt32(pv, 2, (int)sval);
Twain.GlobalUnlock(Handle);
}
public TwCapability(TwCap cap, short sval, TwType twType)
{
this.Cap = (short)cap;
this.ConType = 5;
this.Handle = Twain.GlobalAlloc(66, 6);
IntPtr ptr = Twain.GlobalLock(this.Handle);
Marshal.WriteInt16(ptr, 0, (short)twType);
Marshal.WriteInt32(ptr, 2, (int)sval);
Twain.GlobalUnlock(this.Handle);
}
public void Acquire()
{
this.CloseSrc();
if (this.appid.Id == IntPtr.Zero)
{
this.Init(this.hwnd);
if (this.appid.Id == IntPtr.Zero)
{
return;
}
}
TwRC twRC = Twain.DSMident(this.appid, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.OpenDS, this.srcds);
if (twRC == TwRC.Success)
{
TwCapability capa = new TwCapability(TwCap.IPixelType, 0, TwType.UInt16);
twRC = Twain.DScap(this.appid, this.srcds, TwDG.Control, TwDAT.Capability, TwMSG.Set, capa);
if (twRC != TwRC.Success)
{
this.CloseSrc();
}
else
{
TwCapability capa2 = new TwCapability(TwCap.RESOLUTION, 200, TwType.Fix32);
twRC = Twain.DScap(this.appid, this.srcds, TwDG.Control, TwDAT.Capability, TwMSG.Set, capa2);
if (twRC != TwRC.Success)
{
this.CloseSrc();
}
else
{
TwCapability capa3 = new TwCapability(TwCap.XferCount, 1, TwType.Int16);
twRC = Twain.DScap(this.appid, this.srcds, TwDG.Control, TwDAT.Capability, TwMSG.Set, capa3);
if (twRC != TwRC.Success)
{
this.CloseSrc();
}
else
{
TwUserInterface twUserInterface = new TwUserInterface();
twUserInterface.ShowUI = 1;
twUserInterface.ModalUI = 1;
twUserInterface.ParentHand = this.hwnd;
twRC = Twain.DSuserif(this.appid, this.srcds, TwDG.Control, TwDAT.UserInterface, TwMSG.EnableDS, twUserInterface);
if (twRC != TwRC.Success)
{
this.CloseSrc();
}
}
}
}
}
}
/*
* public TwCapability(TwCap cap, short sval)
* {
* Cap = (short)cap;
* ConType = (short)TwOn.One;
* Handle = Twain.GlobalAlloc(0x42, 6);
* IntPtr pv = Twain.GlobalLock(Handle);
* Marshal.WriteInt16(pv, 0, (short)TwType.Int16);
* Marshal.WriteInt32(pv, 2, (int)sval);
* Twain.GlobalUnlock(Handle);
* }
*/
public TwCapability(TwCap cap, TwFix32 val)
{
Cap = (short)cap;
ConType = (short)TwOn.One;
Handle = Twain.GlobalAlloc(0x42, 6);
IntPtr pv = Twain.GlobalLock(Handle);
Marshal.WriteInt16(pv, 0, (short)TwType.UInt16);
Marshal.WriteInt32(pv, 2, (int)val.Whole);
Marshal.WriteInt64(pv, 4, (long)val.Whole);
Twain.GlobalUnlock(Handle);
}
public void Select()
{
this.CloseSrc();
if (this.appid.Id == IntPtr.Zero)
{
this.Init(this.hwnd);
if (this.appid.Id == IntPtr.Zero)
{
return;
}
}
TwRC twRC = Twain.DSMident(this.appid, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.UserSelect, this.srcds);
}
public TwainCommand PassMessage(ref Message m)
{
TwainCommand result;
if (this.srcds.Id == IntPtr.Zero)
{
result = TwainCommand.Not;
}
else
{
int messagePos = Twain.GetMessagePos();
this.winmsg.hwnd = m.HWnd;
this.winmsg.message = m.Msg;
this.winmsg.wParam = m.WParam;
this.winmsg.lParam = m.LParam;
this.winmsg.time = Twain.GetMessageTime();
this.winmsg.x = (int)((short)messagePos);
this.winmsg.y = (int)((short)(messagePos >> 16));
Marshal.StructureToPtr(this.winmsg, this.evtmsg.EventPtr, false);
this.evtmsg.Message = 0;
TwRC twRC = Twain.DSevent(this.appid, this.srcds, TwDG.Control, TwDAT.Event, TwMSG.ProcessEvent, ref this.evtmsg);
if (twRC == TwRC.NotDSEvent)
{
result = TwainCommand.Not;
}
else if (this.evtmsg.Message == 257)
{
result = TwainCommand.TransferReady;
}
else if (this.evtmsg.Message == 258)
{
result = TwainCommand.CloseRequest;
}
else if (this.evtmsg.Message == 259)
{
result = TwainCommand.CloseOk;
}
else if (this.evtmsg.Message == 260)
{
result = TwainCommand.DeviceEvent;
}
else
{
result = TwainCommand.Null;
}
}
return(result);
}
public void Init(IntPtr hwndp)
{
this.Finish();
TwRC twRC = Twain.DSMparent(this.appid, IntPtr.Zero, TwDG.Control, TwDAT.Parent, TwMSG.OpenDSM, ref hwndp);
if (twRC == TwRC.Success)
{
twRC = Twain.DSMident(this.appid, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.UserSelect, this.srcds);
if (twRC == TwRC.Success)
{
this.hwnd = hwndp;
}
else
{
twRC = Twain.DSMparent(this.appid, IntPtr.Zero, TwDG.Control, TwDAT.Parent, TwMSG.CloseDSM, ref hwndp);
}
}
TwIdentity twIdentity = this.srcds;
}
public void Acquire2()
{
this.CloseSrc();
if (this.appid.Id == IntPtr.Zero)
{
this.Init(this.hwnd);
if (this.appid.Id == IntPtr.Zero)
{
return;
}
}
TwRC twRC = Twain.DSMident(this.appid, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.OpenDS, this.srcds);
if (twRC == TwRC.Success)
{
TwCapability capa = new TwCapability(TwCap.XferCount, 1, TwType.Int16);
twRC = Twain.DScap(this.appid, this.srcds, TwDG.Control, TwDAT.Capability, TwMSG.Set, capa);
if (twRC != TwRC.Success)
{
this.CloseSrc();
}
}
}
public ArrayList TransferPictures()
{
ArrayList arrayList = new ArrayList();
ArrayList result;
if (this.srcds.Id == IntPtr.Zero)
{
result = arrayList;
}
else
{
IntPtr zero = IntPtr.Zero;
TwPendingXfers twPendingXfers = new TwPendingXfers();
TwRC twRC;
while (true)
{
twPendingXfers.Count = 0;
zero = IntPtr.Zero;
TwImageInfo imginf = new TwImageInfo();
twRC = Twain.DSiinf(this.appid, this.srcds, TwDG.Image, TwDAT.ImageInfo, TwMSG.Get, imginf);
if (twRC != TwRC.Success)
{
break;
}
twRC = Twain.DSixfer(this.appid, this.srcds, TwDG.Image, TwDAT.ImageNativeXfer, TwMSG.Get, ref zero);
if (twRC != TwRC.XferDone)
{
goto Block_3;
}
twRC = Twain.DSpxfer(this.appid, this.srcds, TwDG.Control, TwDAT.PendingXfers, TwMSG.EndXfer, twPendingXfers);
if (twRC != TwRC.Success)
{
goto Block_4;
}
arrayList.Add(zero);
if (this.ScanedImage != null)
{
this.ScanedImage(zero, new ImageEvent());
}
if (twPendingXfers.Count == 0)
{
goto Block_6;
}
}
result = arrayList;
return(result);
Block_3:
result = arrayList;
return(result);
Block_4:
result = arrayList;
return(result);
Block_6:
twRC = Twain.DSpxfer(this.appid, this.srcds, TwDG.Control, TwDAT.PendingXfers, TwMSG.Reset, twPendingXfers);
result = arrayList;
}
return(result);
}
public TwainSource(IntPtr hwndp)
{
_twain = new Twain();
_twain.Init(hwndp);
}
public MainFrame()
{
InitializeComponent();
tw = new Twain();
tw.Init( this.Handle );
}
private int _twainCommandNullCount = 0; // hack: TwainCommand.Null is sended continuously after TWAIN device is not available or when once preview is done
#endregion Fields
#region Constructors
public TwainSource(IntPtr hwndp)
{
_twain = new Twain();
_twain.Init(hwndp);
}