/// <summary>
/// Closes data source
/// </summary>
public void CloseDS()
{
if (m_srcDs.Id != IntPtr.Zero)
{
TwUserInterface guif = new TwUserInterface();
DSuserif(m_appId, m_srcDs, TwDG.Control, TwDAT.UserInterface, TwMSG.DisableDS, guif);
DSMident(m_appId, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.CloseDS, m_srcDs);
}
m_srcDs.Id = IntPtr.Zero;
}
/// <summary>
/// Acquires image from scanner
/// </summary>
/// <param name="defaltSettings"></param>
/// <param name="imprinterText">String to print. It's null or empty if no Imprinting</param>
public void Acquire(bool defaltSettings, string imprinterText)
{
Debug.Assert(string.IsNullOrEmpty(imprinterText) || Encoding.ASCII.GetByteCount(imprinterText) < 256);
UseImprinter = !string.IsNullOrEmpty(imprinterText);
CloseDS();
CloseDSM();
Init(m_hWnd);
CheckAndThrow(DSMident(m_appId, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.OpenDS, m_srcDs), "Cannot open DS");
var cap = new TwCapability(TwCap.CAP_XFERCOUNT, 1);
CheckCloseAndThrow(DScap(m_appId, m_srcDs, TwDG.Control, TwDAT.Capability, TwMSG.Set, cap), "Cannot set cap CAP_XFERCOUNT");
cap = new TwCapability(TwCap.CAP_SUPPORTEDSIZES, 0);
CheckCloseAndThrow(DScap(m_appId, m_srcDs, TwDG.Control, TwDAT.Capability, TwMSG.Set, cap), "Cannot set cap CAP_SUPPORTEDSIZES");
var layout = new TwImageLayout();
CheckCloseAndThrow(DSilayout(m_appId, m_srcDs, TwDG.Image, TwDAT.ImageLayout, TwMSG.Get, layout), "Cannot get ImageLayout");
//Use Imprinter
cap = new TwCapability(TwCap.CAP_PRINTER, TWPR_IMPRINTERBOTTOMAFTER);
if (Check(DScap(m_appId, m_srcDs, TwDG.Control, TwDAT.Capability, TwMSG.Set, cap)))
{
cap = new TwCapability(TwCap.CAP_PRINTERENABLED, (imprinterText.IsNullOrEmpty() ? FALSE : TRUE));
CheckCloseAndThrow(DScap(m_appId, m_srcDs, TwDG.Control, TwDAT.Capability, TwMSG.Set, cap), "Cannot set cap CAP_PRINTERENABLED");
if (!imprinterText.IsNullOrEmpty())
{
cap = new TwCapability(TwCap.CAP_PRINTERMODE, TWPM_SINGLESTRING);
CheckCloseAndThrow(DScap(m_appId, m_srcDs, TwDG.Control, TwDAT.Capability, TwMSG.Set, cap), "Cannot set cap CAP_PRINTERMODE");
cap = new TwCapability(TwCap.CAP_PRINTERSTRING, imprinterText, TwType.Str255);
CheckCloseAndThrow(DScap(m_appId, m_srcDs, TwDG.Control, TwDAT.Capability, TwMSG.Set, cap), "Cannot set cap CAP_PRINTERSTRING");
}
}
var guif = new TwUserInterface();
guif.ShowUI = (short)(defaltSettings ? FALSE : TRUE);
guif.ModalUI = 1;
guif.ParentHand = m_hWnd;
CheckCloseAndThrow(DSuserif(m_appId, m_srcDs, TwDG.Control, TwDAT.UserInterface, TwMSG.EnableDS, guif), "Cannot enable DS");
}
private static extern TwRC DSuserif([In, Out] TwIdentity origin, [In, Out] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, TwUserInterface guif);