private ArrayList TransferPictures()
{
ArrayList pics = new ArrayList();
if (CurrentScanner == -1)
{
return(pics);
}
TwRC rc;
TwPendingXfers pendingxfer = new TwPendingXfers();
do
{
pendingxfer.Count = 0;
IntPtr hbitmap = IntPtr.Zero;
TwImageInfo imageinfo = new TwImageInfo();
rc = tw.DsImageInfo(appId, sources[CurrentScanner], TwDG.Image, TwDAT.ImageInfo, TwMSG.Get, imageinfo);
if (rc != TwRC.Success)
{
CloseDS();
return(pics);
}
rc = tw.DsImagexfer(appId, sources[CurrentScanner], TwDG.Image, TwDAT.ImageNativeXfer, TwMSG.Get, ref hbitmap);
if (rc != TwRC.XferDone)
{
CloseDS();
return(pics);
}
rc = tw.DsPendingxfers(appId, sources[CurrentScanner], TwDG.Control, TwDAT.PendingXfers, TwMSG.EndXfer, pendingxfer);
if (rc != TwRC.Success)
{
CloseDS();
return(pics);
}
pics.Add(hbitmap);
}while (pendingxfer.Count != 0);
rc = tw.DsPendingxfers(appId, sources[CurrentScanner], TwDG.Control, TwDAT.PendingXfers, TwMSG.Reset, pendingxfer);
return(pics);
}
public TwImageInfo GetImageInfo(TwIdentity dataSourceId)
{
TwImageInfo result = new TwImageInfo();
TwRC rc = LibTwain32.DSiinf(fApplicationId, dataSourceId, TwDG.Image, TwDAT.ImageInfo, TwMSG.Get, result);
return (rc == TwRC.Success) ? result : null;
}
public bool GetImageInfo(TwIdentity dataSourceId, TwImageInfo result)
{
TwRC rc = LibTwain32.DSiinf(fApplicationId, dataSourceId, TwDG.Image, TwDAT.ImageInfo, TwMSG.Get, result);
return (bool)(rc == TwRC.Success);
}
public TwRC DsImageInfo(TwIdentity origin, TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, TwImageInfo imageinfo)
{
return(DsEntryImageInfo(origin, dest, dg, dat, msg, imageinfo));
}
internal static extern TwRC DsEntryImageInfo([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwImageInfo imgeinfo);
private bool TransferPictures()
{
bool success = IsActive();
if(success)
{
TwPendingXfers pxfr = new TwPendingXfers();
success = fTwain.GetNumberOfPendingTransfers(fIdent, pxfr);
while(success && (pxfr.Count != 0))
{
TwImageInfo iinf = new TwImageInfo();
success = fTwain.GetImageInfo(fIdent, iinf);
IntPtr hBitmap = IntPtr.Zero;
if(success)
{
success = fTwain.TransferImage(fIdent, ref hBitmap);
}
if(success)
{
Image image = null;
IntPtr ptrBitmap = LibKernel32.GlobalLock(hBitmap);
image = TwainUtils.DibToImage(ptrBitmap);
LibKernel32.GlobalUnlock(hBitmap);
Raise_OnNewPictureData(image, fSettings);
}
if(success)
{
success = fTwain.TransferEnd(fIdent, pxfr);
}
}
}
return success;
}