How to write C# program using WIA Automation 2.0 to support MultiFeed Scanner

  • Thread starter Thread starter Tom G.
  • Start date Start date
T

Tom G.

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I am working on a project right now that needs to be able to scan in
multiple pages using a scanner's multi feed feature. The scanner that
I am using to test is Fujitsu fi-5120C.

I am coding this project in C# and am trying to use WIA Automation 2.0
Library. I am open to alternative technologies if someone has any
suggestions.

My test case is that I have three sheets of paper in the document
feeder and I want my code to scan in all three pages at once.

All the pages get scanned correctly when I call the following code:

private void CallScanWizard()
{

WIA.CommonDialog dlg = new WIA.CommonDialog();

Device dvc =
dlg.ShowSelectDevice(WiaDeviceType.ScannerDeviceType,true,false);

if (dvc != null)
{
dlg.ShowAcquisitionWizard(dvc);
}
}

This tells me that it is possible in WIA. However, this can't be the
solution for me. I don't want the user to have to pick a file path
for the images to be saved to. I want to work with them in memory
only.

So I tried the following code:

private const int WIA_DPS_DOCUMENT_HANDLING_SELECT_FEEDER = 1;
private const int WIA_DPS_DOCUMENT_HANDLING_SELECT_FLATBED =
2;
private const int WIA_IPS_PAGES = 3096;

private const int WIA_DPS_DOCUMENT_HANDLING_STATUS_FEED_READY
= 1;

private const int WIA_PROPERTIES_WIA_RESERVED_FOR_NEW_PROPS =
1024;
private const int WIA_PROPERTIES_WIA_DIP_FIRST = 2;
private const int WIA_PROPERTIES_WIA_DPA_FIRST =
WIA_PROPERTIES_WIA_DIP_FIRST +
WIA_PROPERTIES_WIA_RESERVED_FOR_NEW_PROPS;
private const int WIA_PROPERTIES_WIA_DPC_FIRST =
WIA_PROPERTIES_WIA_DPA_FIRST +
WIA_PROPERTIES_WIA_RESERVED_FOR_NEW_PROPS;

private const int WIA_PROPERTIES_WIA_DPS_FIRST =
WIA_PROPERTIES_WIA_DPC_FIRST +
WIA_PROPERTIES_WIA_RESERVED_FOR_NEW_PROPS;
private const int
WIA_PROPERTIES_WIA_DPS_DOCUMENT_HANDLING_STATUS =
WIA_PROPERTIES_WIA_DPS_FIRST + 13;
private const int
WIA_PROPERTIES_WIA_DPS_DOCUMENT_HANDLING_SELECT =
WIA_PROPERTIES_WIA_DPS_FIRST + 14;
private const string WIA_DPS_DOCUMENT_HANDLING_STATUS_STR =
"Document Handling Status";

private const double WIA_ERRORS_BASE_VAL_WIA_ERROR =
2149646336;
private const double WIA_ERRORS_WIA_ERROR_PAPER_EMPTY =
WIA_ERRORS_BASE_VAL_WIA_ERROR + 3;

private const int WIA_IPS_CUR_INTENT = 6146;
private const int WIA_IPS_XRES = 6147;
private const int WIA_IPS_YRES = 6148;

private const int WIA_INTENT_NONE = 0x00000000;
private const int WIA_INTENT_IMAGE_TYPE_COLOR = 0x00000001;
private const int WIA_INTENT_IMAGE_TYPE_GRAYSCALE =
0x00000002;
private const int WIA_INTENT_IMAGE_TYPE_TEXT = 0x00000004;
private const int WIA_INTENT_IMAGE_TYPE_MASK = 0x0000000F;
private const int WIA_INTENT_MINIMIZE_SIZE = 0x00010000;
private const int WIA_INTENT_MAXIMIZE_QUALITY = 0x00020000;
private const int WIA_INTENT_BEST_PREVIEW = 0x00040000;
private const int WIA_INTENT_SIZE_MASK = 0x000F0000;
private const int FEED_READY = 0x01;

private const string wiaFormatPNG =
"{B96B3CAF-0728-11D3-9D7B-0000F81EF32E}";
private void TestScan()
{
DeviceManager manager = new DeviceManager();
object index = 1;

DeviceInfo info = manager.DeviceInfos.get_Item(ref index);
Device dvc = info.Connect();
object res = 150;
object intent = WIA_INTENT_IMAGE_TYPE_COLOR;
object statusProp = WIA_DPS_DOCUMENT_HANDLING_STATUS_STR;
int documentStatus = 0;
object pgs = 0;
object handler = WIA_DPS_DOCUMENT_HANDLING_SELECT_FEEDER;

foreach (Property p in dvc.Properties)
{
switch (p.PropertyID)
{
case
WIA_PROPERTIES_WIA_DPS_DOCUMENT_HANDLING_SELECT:
p.set_Value(ref handler);
break;

case WIA_IPS_XRES:
case WIA_IPS_YRES:
p.set_Value(ref res);
break;

case WIA_IPS_CUR_INTENT:
p.set_Value(ref intent);
break;

case
WIA_PROPERTIES_WIA_DPS_DOCUMENT_HANDLING_STATUS:
documentStatus = (int)p.get_Value();
break;

case WIA_IPS_PAGES:
p.set_Value(ref pgs);
break;
}
}

foreach (Item itm in dvc.Items)
{
while ((documentStatus & FEED_READY) == FEED_READY)
{
itm.Transfer(wiaFormatPNG);
documentStatus = (int)dvc.Properties.get_Item(ref
statusProp).get_Value();
}
}
}

I got this code idea from http://www.xtremevbtalk.com/showthread.php?t=288758.
However, the DOCUMENT HANDLING STATUS always stays 5 even when all the
pages are scanned through. This eventually ends in a com exception
being thrown when all the pages have been scanned. I could just throw
a try catch around the whole thing but that doesn't seem right to me.
I don't like it.

Does anyone have any suggestions for me? This code needs to work
regardless of what scanner is being used. Is WIA the wrong choice
here? Should I go right to TWAIN code?

Thanks in advance for any help anyone can give me.
 
Re: How to write C# program using WIA Automation 2.0 to support Multi Feed Scanner

Re: How to write C# program using WIA Automation 2.0 to support Multi Feed Scanner

It's gotta be this line:

private const int WIA_INTENT_NONE = 0x00000000;


If it isn't I'm wrong! Or maybe this is the wrong group?


Good luck, Rich


"Tom G." <tgrant@healthcareone.info> wrote in message
news:7c70c281-a55c-4f47-99f1-d635afd247cc@n75g2000hsh.googlegroups.com...
>I am working on a project right now that needs to be able to scan in
> multiple pages using a scanner's multi feed feature. The scanner that
> I am using to test is Fujitsu fi-5120C.
>
> I am coding this project in C# and am trying to use WIA Automation 2.0
> Library. I am open to alternative technologies if someone has any
> suggestions.
>
> My test case is that I have three sheets of paper in the document
> feeder and I want my code to scan in all three pages at once.
>
> All the pages get scanned correctly when I call the following code:
>
> private void CallScanWizard()
> {
>
> WIA.CommonDialog dlg = new WIA.CommonDialog();
>
> Device dvc =
> dlg.ShowSelectDevice(WiaDeviceType.ScannerDeviceType,true,false);
>
> if (dvc != null)
> {
> dlg.ShowAcquisitionWizard(dvc);
> }
> }
>
> This tells me that it is possible in WIA. However, this can't be the
> solution for me. I don't want the user to have to pick a file path
> for the images to be saved to. I want to work with them in memory
> only.
>
> So I tried the following code:
>
> private const int WIA_DPS_DOCUMENT_HANDLING_SELECT_FEEDER = 1;
> private const int WIA_DPS_DOCUMENT_HANDLING_SELECT_FLATBED =
> 2;
> private const int WIA_IPS_PAGES = 3096;
>
> private const int WIA_DPS_DOCUMENT_HANDLING_STATUS_FEED_READY
> = 1;
>
> private const int WIA_PROPERTIES_WIA_RESERVED_FOR_NEW_PROPS =
> 1024;
> private const int WIA_PROPERTIES_WIA_DIP_FIRST = 2;
> private const int WIA_PROPERTIES_WIA_DPA_FIRST =
> WIA_PROPERTIES_WIA_DIP_FIRST +
> WIA_PROPERTIES_WIA_RESERVED_FOR_NEW_PROPS;
> private const int WIA_PROPERTIES_WIA_DPC_FIRST =
> WIA_PROPERTIES_WIA_DPA_FIRST +
> WIA_PROPERTIES_WIA_RESERVED_FOR_NEW_PROPS;
>
> private const int WIA_PROPERTIES_WIA_DPS_FIRST =
> WIA_PROPERTIES_WIA_DPC_FIRST +
> WIA_PROPERTIES_WIA_RESERVED_FOR_NEW_PROPS;
> private const int
> WIA_PROPERTIES_WIA_DPS_DOCUMENT_HANDLING_STATUS =
> WIA_PROPERTIES_WIA_DPS_FIRST + 13;
> private const int
> WIA_PROPERTIES_WIA_DPS_DOCUMENT_HANDLING_SELECT =
> WIA_PROPERTIES_WIA_DPS_FIRST + 14;
> private const string WIA_DPS_DOCUMENT_HANDLING_STATUS_STR =
> "Document Handling Status";
>
> private const double WIA_ERRORS_BASE_VAL_WIA_ERROR =
> 2149646336;
> private const double WIA_ERRORS_WIA_ERROR_PAPER_EMPTY =
> WIA_ERRORS_BASE_VAL_WIA_ERROR + 3;
>
> private const int WIA_IPS_CUR_INTENT = 6146;
> private const int WIA_IPS_XRES = 6147;
> private const int WIA_IPS_YRES = 6148;
>
> private const int WIA_INTENT_NONE = 0x00000000;
> private const int WIA_INTENT_IMAGE_TYPE_COLOR = 0x00000001;
> private const int WIA_INTENT_IMAGE_TYPE_GRAYSCALE =
> 0x00000002;
> private const int WIA_INTENT_IMAGE_TYPE_TEXT = 0x00000004;
> private const int WIA_INTENT_IMAGE_TYPE_MASK = 0x0000000F;
> private const int WIA_INTENT_MINIMIZE_SIZE = 0x00010000;
> private const int WIA_INTENT_MAXIMIZE_QUALITY = 0x00020000;
> private const int WIA_INTENT_BEST_PREVIEW = 0x00040000;
> private const int WIA_INTENT_SIZE_MASK = 0x000F0000;
> private const int FEED_READY = 0x01;
>
> private const string wiaFormatPNG =
> "{B96B3CAF-0728-11D3-9D7B-0000F81EF32E}";
> private void TestScan()
> {
> DeviceManager manager = new DeviceManager();
> object index = 1;
>
> DeviceInfo info = manager.DeviceInfos.get_Item(ref index);
> Device dvc = info.Connect();
> object res = 150;
> object intent = WIA_INTENT_IMAGE_TYPE_COLOR;
> object statusProp = WIA_DPS_DOCUMENT_HANDLING_STATUS_STR;
> int documentStatus = 0;
> object pgs = 0;
> object handler = WIA_DPS_DOCUMENT_HANDLING_SELECT_FEEDER;
>
> foreach (Property p in dvc.Properties)
> {
> switch (p.PropertyID)
> {
> case
> WIA_PROPERTIES_WIA_DPS_DOCUMENT_HANDLING_SELECT:
> p.set_Value(ref handler);
> break;
>
> case WIA_IPS_XRES:
> case WIA_IPS_YRES:
> p.set_Value(ref res);
> break;
>
> case WIA_IPS_CUR_INTENT:
> p.set_Value(ref intent);
> break;
>
> case
> WIA_PROPERTIES_WIA_DPS_DOCUMENT_HANDLING_STATUS:
> documentStatus = (int)p.get_Value();
> break;
>
> case WIA_IPS_PAGES:
> p.set_Value(ref pgs);
> break;
> }
> }
>
> foreach (Item itm in dvc.Items)
> {
> while ((documentStatus & FEED_READY) == FEED_READY)
> {
> itm.Transfer(wiaFormatPNG);
> documentStatus = (int)dvc.Properties.get_Item(ref
> statusProp).get_Value();
> }
> }
> }
>
> I got this code idea from
> http://www.xtremevbtalk.com/showthread.php?t=288758.
> However, the DOCUMENT HANDLING STATUS always stays 5 even when all the
> pages are scanned through. This eventually ends in a com exception
> being thrown when all the pages have been scanned. I could just throw
> a try catch around the whole thing but that doesn't seem right to me.
> I don't like it.
>
> Does anyone have any suggestions for me? This code needs to work
> regardless of what scanner is being used. Is WIA the wrong choice
> here? Should I go right to TWAIN code?
>
> Thanks in advance for any help anyone can give me.
>
 
Re: How to write C# program using WIA Automation 2.0 to support MultiFeed Scanner

On Feb 29, 5:10 pm, "Rich" <dontbotherme@localhost> wrote:
> It's gotta be this line:
>
> private const int WIA_INTENT_NONE = 0x00000000;
>
> If it isn't I'm wrong! Or maybe this is the wrong group?
>
> Good luck, Rich
>
> "Tom G." <tgr...@healthcareone.info> wrote in message
>
> news:7c70c281-a55c-4f47-99f1-d635afd247cc@n75g2000hsh.googlegroups.com...
>
>
>
> >I am working on a project right now that needs to be able to scan in
> > multiple pages using a scanner's multi feed feature.  The scanner that
> > I am using to test is Fujitsu fi-5120C.
>
> > I am coding this project in C# and am trying to use WIA Automation 2.0
> > Library.  I am open to alternative technologies if someone has any
> > suggestions.
>
> > My test case is that I have three sheets of paper in the document
> > feeder and I want my code to scan in all three pages at once.
>
> > All the pages get scanned correctly when I call the following code:
>
> >        private void CallScanWizard()
> >        {
>
> >            WIA.CommonDialog dlg = new WIA.CommonDialog();
>
> >            Device dvc =
> > dlg.ShowSelectDevice(WiaDeviceType.ScannerDeviceType,true,false);
>
> >            if (dvc != null)
> >            {
> >                dlg.ShowAcquisitionWizard(dvc);
> >            }
> >        }
>
> > This tells me that it is possible in WIA.  However, this can't be the
> > solution for me.  I don't want the user to have to pick a file path
> > for the images to be saved to.  I want to work with them in memory
> > only.
>
> > So I tried the following code:
>
> > private const int WIA_DPS_DOCUMENT_HANDLING_SELECT_FEEDER = 1;
> >        private const int WIA_DPS_DOCUMENT_HANDLING_SELECT_FLATBED =
> > 2;
> >        private const int WIA_IPS_PAGES = 3096;
>
> >        private const int WIA_DPS_DOCUMENT_HANDLING_STATUS_FEED_READY
> > = 1;
>
> >        private const int WIA_PROPERTIES_WIA_RESERVED_FOR_NEW_PROPS =
> > 1024;
> >        private const int WIA_PROPERTIES_WIA_DIP_FIRST = 2;
> >        private const int WIA_PROPERTIES_WIA_DPA_FIRST =
> > WIA_PROPERTIES_WIA_DIP_FIRST +
> > WIA_PROPERTIES_WIA_RESERVED_FOR_NEW_PROPS;
> >        private const int WIA_PROPERTIES_WIA_DPC_FIRST =
> > WIA_PROPERTIES_WIA_DPA_FIRST +
> > WIA_PROPERTIES_WIA_RESERVED_FOR_NEW_PROPS;
>
> >        private const int WIA_PROPERTIES_WIA_DPS_FIRST =
> > WIA_PROPERTIES_WIA_DPC_FIRST +
> > WIA_PROPERTIES_WIA_RESERVED_FOR_NEW_PROPS;
> >        private const int
> > WIA_PROPERTIES_WIA_DPS_DOCUMENT_HANDLING_STATUS =
> > WIA_PROPERTIES_WIA_DPS_FIRST + 13;
> >        private const int
> > WIA_PROPERTIES_WIA_DPS_DOCUMENT_HANDLING_SELECT =
> > WIA_PROPERTIES_WIA_DPS_FIRST + 14;
> >        private const string WIA_DPS_DOCUMENT_HANDLING_STATUS_STR =
> > "Document Handling Status";
>
> >        private const double WIA_ERRORS_BASE_VAL_WIA_ERROR =
> > 2149646336;
> >        private const double WIA_ERRORS_WIA_ERROR_PAPER_EMPTY =
> > WIA_ERRORS_BASE_VAL_WIA_ERROR + 3;
>
> >        private const int WIA_IPS_CUR_INTENT = 6146;
> >        private const int WIA_IPS_XRES = 6147;
> >        private const int WIA_IPS_YRES = 6148;
>
> >        private const int WIA_INTENT_NONE = 0x00000000;
> >        private const int WIA_INTENT_IMAGE_TYPE_COLOR = 0x00000001;
> >        private const int WIA_INTENT_IMAGE_TYPE_GRAYSCALE =
> > 0x00000002;
> >        private const int WIA_INTENT_IMAGE_TYPE_TEXT = 0x00000004;
> >        private const int WIA_INTENT_IMAGE_TYPE_MASK = 0x0000000F;
> >        private const int WIA_INTENT_MINIMIZE_SIZE = 0x00010000;
> >        private const int WIA_INTENT_MAXIMIZE_QUALITY = 0x00020000;
> >        private const int WIA_INTENT_BEST_PREVIEW = 0x00040000;
> >        private const int WIA_INTENT_SIZE_MASK = 0x000F0000;
> >        private const int FEED_READY = 0x01;
>
> >        private const string wiaFormatPNG =
> > "{B96B3CAF-0728-11D3-9D7B-0000F81EF32E}";
> >      private void TestScan()
> >        {
> >            DeviceManager manager = new DeviceManager();
> >            object index = 1;
>
> >            DeviceInfo info = manager.DeviceInfos.get_Item(ref index);
> >            Device dvc = info.Connect();
> >            object res = 150;
> >            object intent = WIA_INTENT_IMAGE_TYPE_COLOR;
> >            object statusProp = WIA_DPS_DOCUMENT_HANDLING_STATUS_STR;
> >            int documentStatus = 0;
> >            object pgs = 0;
> >            object handler = WIA_DPS_DOCUMENT_HANDLING_SELECT_FEEDER;
>
> >            foreach (Property p in dvc.Properties)
> >            {
> >                switch (p.PropertyID)
> >                {
> >                    case
> > WIA_PROPERTIES_WIA_DPS_DOCUMENT_HANDLING_SELECT:
> >                        p.set_Value(ref handler);
> >                        break;
>
> >                    case WIA_IPS_XRES:
> >                    case WIA_IPS_YRES:
> >                        p.set_Value(ref res);
> >                        break;
>
> >                    case WIA_IPS_CUR_INTENT:
> >                        p.set_Value(ref intent);
> >                        break;
>
> >                    case
> > WIA_PROPERTIES_WIA_DPS_DOCUMENT_HANDLING_STATUS:
> >                        documentStatus = (int)p..get_Value();
> >                        break;
>
> >                    case WIA_IPS_PAGES:
> >                        p.set_Value(ref pgs);
> >                        break;
> >                }
> >            }
>
> >            foreach (Item itm in dvc.Items)
> >            {
> >                while ((documentStatus & FEED_READY) == FEED_READY)
> >                {
> >                    itm.Transfer(wiaFormatPNG);
> >                    documentStatus = (int)dvc.Properties.get_Item(ref
> > statusProp).get_Value();
> >                }
> >            }
> >        }
>
> > I got this code idea from
> >http://www.xtremevbtalk.com/showthread.php?t=288758.
> > However, the DOCUMENT HANDLING STATUS always stays 5 even when all the
> > pages are scanned through.  This eventually ends in a com exception
> > being thrown when all the pages have been scanned.  I could just throw
> > a try catch around the whole thing but that doesn't seem right to me.
> > I don't like it.
>
> > Does anyone have any suggestions for me?  This code needs to work
> > regardless of what scanner is being used.  Is WIA the wrong choice
> > here?  Should I go right to TWAIN code?
>
> > Thanks in advance for any help anyone can give me.- Hide quoted text -
>
> - Show quoted text -

I am not sure why you are referencing that line. What is wrong with
private const int WIA_INTENT_NONE = 0x00000000;? You think that
somehow applies to the Document Handling Status remaining 5 even with
no paper in the tray?

Wrong group? Do you mean that I have posted to the wrong group? I
picked this group for two reasons. When I did a google search on this
topic, I got the most hits in this news group. The second reason is
that this group has a lot of activity. Is there a better group to
post to?

Thanks for you reply.

Tom
 
Re: How to write C# program using WIA Automation 2.0 to support Multi Feed Scanner

Re: How to write C# program using WIA Automation 2.0 to support Multi Feed Scanner


"Tom G." <tgrant@healthcareone.info> wrote in message
news:9a600dd5-bd70-4a3a-83ba-28b005c6141f@2g2000hsn.googlegroups.com...
<snip>

Wrong group? Do you mean that I have posted to the wrong group? I
picked this group for two reasons. When I did a google search on this
topic, I got the most hits in this news group. The second reason is
that this group has a lot of activity. Is there a better group to
post to?

Thanks for you reply.

Tom


Yes, you posted to one of many wrong groups. You have a programming
problem, but most people here are not
programmers. The number of hits isn't especially important. What is
important is the context.
Jim
 
Re: How to write C# program using WIA Automation 2.0 to support Multi Feed Scanner

Re: How to write C# program using WIA Automation 2.0 to support Multi Feed Scanner

There are several microsoft programming newsgroups, if you just look at the
headers.

Jim wrote:
> "Tom G." <tgrant@healthcareone.info> wrote in message
> news:9a600dd5-bd70-4a3a-83ba-28b005c6141f@2g2000hsn.googlegroups.com...
> <snip>
>
> Wrong group? Do you mean that I have posted to the wrong group? I
> picked this group for two reasons. When I did a google search on this
> topic, I got the most hits in this news group. The second reason is
> that this group has a lot of activity. Is there a better group to
> post to?
>
> Thanks for you reply.
>
> Tom
>
>
> Yes, you posted to one of many wrong groups. You have a programming
> problem, but most people here are not
> programmers. The number of hits isn't especially important. What is
> important is the context.
> Jim
 
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