private static extern TwRC DSuserif( [In, Out] TwIdentity origin, [In, Out] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, TwUserInterface guif );
public void Acquire()
{
TwRC rc;
CloseSrc();
if( appid.Id == IntPtr.Zero )
{
Init( hwnd );
if( appid.Id == IntPtr.Zero )
return;
}
rc = DSMident( appid, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.OpenDS, srcds );
if( rc != TwRC.Success )
return;
TwCapability cap = new TwCapability( TwCap.XferCount, 1 );
rc = DScap( appid, srcds, TwDG.Control, TwDAT.Capability, TwMSG.Set, cap );
if( rc != TwRC.Success )
{
CloseSrc();
return;
}
TwUserInterface guif = new TwUserInterface();
guif.ShowUI = Convert.ToInt16(Config.GetConfigValue("Config", "ShowScanUI")); //����ʴ�˹�Ҩ�����Ѻ��˹���ҡ� Scan
//guif.ShowUI = 0;
guif.ModalUI = 1;
guif.ParentHand = hwnd;
rc = DSuserif(appid, srcds, TwDG.Control, TwDAT.UserInterface, TwMSG.EnableDS, guif);
if (rc != TwRC.Success)
{
CloseSrc();
return;
}
}
public void CloseSrc()
{
TwRC rc;
if( srcds.Id != IntPtr.Zero )
{
TwUserInterface guif = new TwUserInterface();
rc = DSuserif( appid, srcds, TwDG.Control, TwDAT.UserInterface, TwMSG.DisableDS, guif );
rc = DSMident( appid, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.CloseDS, srcds );
}
}