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);
}
private static extern twainDefs.TwRC DSpxfer([In, Out] twainDefs.TwIdentity origin, [In] twainDefs.TwIdentity dest, twainDefs.TwDG dg, twainDefs.TwDAT dat, twainDefs.TwMSG msg, [In, Out] twainDefs.TwPendingXfers pxfr);
