public void Finish()
{
twainDefs.TwRC rc = 0;
CloseSrc();
if (appid.Id != IntPtr.Zero)
{
rc = DSMparent(appid, IntPtr.Zero, twainDefs.TwDG.Control, twainDefs.TwDAT.Parent, twainDefs.TwMSG.CloseDSM, ref hwnd);
}
appid.Id = IntPtr.Zero;
}
public void Select()
{
twainDefs.TwRC rc = 0;
CloseSrc();
if (appid.Id == IntPtr.Zero)
{
Init(hwnd);
if (appid.Id == IntPtr.Zero)
{
return;
}
}
rc = DSMident(appid, IntPtr.Zero, twainDefs.TwDG.Control, twainDefs.TwDAT.Identity, twainDefs.TwMSG.UserSelect, srcds);
}
public ArrayList TransferPictures()
{
ArrayList pics = new ArrayList();
if (srcds.Id == IntPtr.Zero)
{
return(pics);
}
twainDefs.TwRC rc = 0;
IntPtr hbitmap = IntPtr.Zero;
twainDefs.TwPendingXfers pxfr = new twainDefs.TwPendingXfers();
do
{
pxfr.Count = 0;
hbitmap = IntPtr.Zero;
twainDefs.TwImageInfo iinf = new twainDefs.TwImageInfo();
rc = DSiinf(appid, srcds, twainDefs.TwDG.Image, twainDefs.TwDAT.ImageInfo, twainDefs.TwMSG.Get, iinf);
if (rc != twainDefs.TwRC.Success)
{
CloseSrc();
return(pics);
}
rc = DSixfer(appid, srcds, twainDefs.TwDG.Image, twainDefs.TwDAT.ImageNativeXfer, twainDefs.TwMSG.Get, ref hbitmap);
if (rc != twainDefs.TwRC.XferDone)
{
CloseSrc();
return(pics);
}
rc = DSpxfer(appid, srcds, twainDefs.TwDG.Control, twainDefs.TwDAT.PendingXfers, twainDefs.TwMSG.EndXfer, pxfr);
if (rc != twainDefs.TwRC.Success)
{
CloseSrc();
return(pics);
}
pics.Add(hbitmap);
}while (pxfr.Count != 0);
rc = DSpxfer(appid, srcds, twainDefs.TwDG.Control, twainDefs.TwDAT.PendingXfers, twainDefs.TwMSG.Reset, pxfr);
return(pics);
}
public void Init(IntPtr hwndp)
{
Finish();
twainDefs.TwRC rc = DSMparent(appid, IntPtr.Zero, twainDefs.TwDG.Control, twainDefs.TwDAT.Parent, twainDefs.TwMSG.OpenDSM, ref hwndp);
if (rc == twainDefs.TwRC.Success)
{
rc = DSMident(appid, IntPtr.Zero, twainDefs.TwDG.Control, twainDefs.TwDAT.Identity, twainDefs.TwMSG.GetDefault, srcds);
if (rc == twainDefs.TwRC.Success)
{
hwnd = hwndp;
}
else
{
rc = DSMparent(appid, IntPtr.Zero, twainDefs.TwDG.Control, twainDefs.TwDAT.Parent, twainDefs.TwMSG.CloseDSM, ref hwndp);
}
}
}
public void CloseSrc()
{
twainDefs.TwRC rc = 0;
try
{
if (srcds.Id != IntPtr.Zero)
{
twainDefs.TwUserInterface guif = new twainDefs.TwUserInterface();
rc = DSuserif(appid, srcds, twainDefs.TwDG.Control, twainDefs.TwDAT.UserInterface, twainDefs.TwMSG.DisableDS, guif);
rc = DSMident(appid, IntPtr.Zero, twainDefs.TwDG.Control, twainDefs.TwDAT.Identity, twainDefs.TwMSG.CloseDS, srcds);
}
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
}
public bool Setup()
{
twainDefs.TwRC rc = 0;
CloseSrc();
if (appid.Id == IntPtr.Zero)
{
Init(hwnd);
if (appid.Id == IntPtr.Zero)
{
return(false);
}
}
rc = DSMident(appid, IntPtr.Zero, twainDefs.TwDG.Control, twainDefs.TwDAT.Identity, twainDefs.TwMSG.OpenDS, srcds);
if (rc != twainDefs.TwRC.Success)
{
return(false);
}
twainDefs.TwCapability cap = new twainDefs.TwCapability(twainDefs.TwCap.CAP_ENABLEDSUIONLY);
rc = DScap(appid, srcds, twainDefs.TwDG.Control, twainDefs.TwDAT.Capability, twainDefs.TwMSG.Get, cap);
if (rc != twainDefs.TwRC.Success)
{
CloseSrc();
return(false);
}
twainDefs.TwUserInterface guif = new twainDefs.TwUserInterface();
guif.ShowUI = 1;
guif.ModalUI = 0;
guif.ParentHand = hwnd;
rc = DSuserif(appid, srcds, twainDefs.TwDG.Control, twainDefs.TwDAT.UserInterface, twainDefs.TwMSG.EnableDSUIOnly, guif);
if (rc != twainDefs.TwRC.Success)
{
CloseSrc();
return(false);
}
return(true);
}
public TwainCommand PassMessage(ref Message m)
{
if (srcds.Id == IntPtr.Zero)
{
return(TwainCommand.Not);
}
int pos = GetMessagePos();
winmsg.hwnd = m.HWnd;
winmsg.message = m.Msg;
winmsg.wParam = m.WParam;
winmsg.lParam = m.LParam;
winmsg.time = GetMessageTime();
winmsg.x = (short)pos;
winmsg.y = (short)(pos >> 16);
Marshal.StructureToPtr(winmsg, evtmsg.EventPtr, false);
evtmsg.Message = 0;
twainDefs.TwRC rc = DSevent(appid, srcds, twainDefs.TwDG.Control, twainDefs.TwDAT.Event, twainDefs.TwMSG.ProcessEvent, ref evtmsg);
if (rc == twainDefs.TwRC.NotDSEvent)
{
return(TwainCommand.Not);
}
if (evtmsg.Message == (short)twainDefs.TwMSG.XFerReady)
{
return(TwainCommand.TransferReady);
}
if (evtmsg.Message == (short)twainDefs.TwMSG.CloseDSReq)
{
return(TwainCommand.CloseRequest);
}
if (evtmsg.Message == (short)twainDefs.TwMSG.CloseDSOK)
{
return(TwainCommand.CloseOk);
}
if (evtmsg.Message == (short)twainDefs.TwMSG.DeviceEvent)
{
return(TwainCommand.DeviceEvent);
}
return(TwainCommand.Null);
}
//
// Function Acquire(int);
//
// aNumberOfPages : -1 duplex and multipage scanning support
// : 1 or greater scan that many images in.
//
public bool Acquire(short aNumberOfPages)
{
twainDefs.TwRC rc = 0;
CloseSrc();
if (appid.Id == IntPtr.Zero)
{
Init(hwnd);
if (appid.Id == IntPtr.Zero)
{
return(false);
}
}
rc = DSMident(appid, IntPtr.Zero, twainDefs.TwDG.Control, twainDefs.TwDAT.Identity, twainDefs.TwMSG.OpenDS, srcds);
if (rc != twainDefs.TwRC.Success)
{
return(false);
}
rc = SetImageLayout(1, 0, 1, 0, 6, 65, 7, 15);
twainDefs.TwCapability cap = new twainDefs.TwCapability(twainDefs.TwCap.XferCount, aNumberOfPages);
rc = DScap(appid, srcds, twainDefs.TwDG.Control, twainDefs.TwDAT.Capability, twainDefs.TwMSG.Set, cap);
if (rc != twainDefs.TwRC.Success)
{
CloseSrc();
return(false);
}
twainDefs.TwUserInterface guif = new twainDefs.TwUserInterface();
guif.ShowUI = 1;
guif.ModalUI = 1;
guif.ParentHand = hwnd;
rc = DSuserif(appid, srcds, twainDefs.TwDG.Control, twainDefs.TwDAT.UserInterface, twainDefs.TwMSG.EnableDS, guif);
if (rc != twainDefs.TwRC.Success)
{
CloseSrc();
return(false);
}
return(true);
}
////////////////////////////////////////////////////////////////////////////
// Function: SetImageInfo --
// Author: TWAIN Working Group
// Input:
// Output: none
// Comments:
//
public twainDefs.TwRC SetImageLayout(short topWhole, short topFrac, short leftWhole, short leftFrac, short rightWhole, short rightFrac, short bottomWhole, short bottomFrac)
{
twainDefs.TwRC rc = 0;
twainDefs.TwImageLayout twImageLayout = new twainDefs.TwImageLayout();
// Check ImageInfo information
//rc = CallDSMEntry(appID, dsID, DG_IMAGE, DAT_IMAGELAYOUT, MSG_GET, (TW_MEMREF) twImageLayout);
rc = DSMImageLayout(appid, srcds, twainDefs.TwDG.Image, twainDefs.TwDAT.ImageLayout, twainDefs.TwMSG.Get, twImageLayout);
switch (rc)
{
case twainDefs.TwRC.Success:
twImageLayout.Frame.Left.Whole = leftWhole;
twImageLayout.Frame.Left.Frac = (ushort)(leftFrac / 100.0 * 65536);
twImageLayout.Frame.Top.Whole = topWhole;
twImageLayout.Frame.Top.Frac = (ushort)(topFrac / 100.0 * 65536);
twImageLayout.Frame.Right.Whole = rightWhole;
twImageLayout.Frame.Right.Frac = (ushort)(rightFrac / 100.0 * 65536);
twImageLayout.Frame.Bottom.Whole = bottomWhole;
twImageLayout.Frame.Bottom.Frac = (ushort)(bottomFrac / 100.0 * 65536);
//rc = CallDSMEntry(&appID, &dsID, DG_IMAGE, DAT_IMAGELAYOUT, MSG_SET, (TW_MEMREF) & twImageLayout);
rc = DSMImageLayout(appid, srcds, twainDefs.TwDG.Image, twainDefs.TwDAT.ImageLayout, twainDefs.TwMSG.Set, twImageLayout);
twainDefs.TwStatus dsmstat1 = new twainDefs.TwStatus();
rc = DSMstatus(appid, srcds, twainDefs.TwDG.Control, twainDefs.TwDAT.Status, twainDefs.TwMSG.Get, dsmstat1);
break;
case twainDefs.TwRC.Failure:
twainDefs.TwStatus dsmstat = new twainDefs.TwStatus();
rc = DSMstatus(appid, srcds, twainDefs.TwDG.Control, twainDefs.TwDAT.Status, twainDefs.TwMSG.Get, dsmstat);
break;
default: break;
}
return(rc);
}
