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);
}
//
// 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);
}
private static extern twainDefs.TwRC DSuserif([In, Out] twainDefs.TwIdentity origin, [In, Out] twainDefs.TwIdentity dest, twainDefs.TwDG dg, twainDefs.TwDAT dat, twainDefs.TwMSG msg, twainDefs.TwUserInterface guif);
