twain drivers

[Konrad]

Hi

Can you point me articles concerning
using of twain drivers for grabbing
image from camera.

Thanks
Konrad

 

[Thomas Scheidegger [MVP]]

..NET has no (not yet?) classes for imaging devices...

You have to use [heavy] PInvoke/Interop with the Win32 Imaging APIs or
any (third-party) COM-Components

check my TWAIN C# sample:
http://www.codeproject.com/dotnet/twaindotnet.asp

or for Windows XP only, my WIA Scripting sample
http://www.codeproject.com/dotnet/wiascriptingdotnet.asp
(For XP SP1, there is a new WIA-Automation component)

PLEASE NOTE:
my samples just show the very basic Interop technology,
are NOT complete and you have to understand TWAIN / WIA!

And there is 'Managed C++', you can use it to
write wrappers for any classic Win32/C++ code:
http://msdn.microsoft.com/library/en-us/dncscol/html/csharp12192002.asp


Or check third-party (I did not test any):
http://www.accusoft.com/imaging/imagegear/igp_about.asp
http://www.accusoft.com/imaging/imagegear/ig_netbeta.asp
http://www.leadtools.com/home2/VertMkts/LTDotNET.htm
http://www.pegasusimaging.com/twainpro.htm
http://www.data-tech.com/Products/ImageMan/imaging.asp
http://www.cfdev.com/activescan/
http://www.dosadi.com/

 

[Konrad]

Thanku you very much for answer.
On one of links you point me I have found
well twain driver but is little problem.
I want to grab picture on disk and if I run
example program which call function
acquire there is dialog of my camera displayed
and only from it I can grab image.
I wish that after calling acquire I have
picture on disk.
How to avoid displaing my camera dialog
window?

Thanks
Konrad

 

[Thomas Scheidegger [MVP]]

How to avoid displaing my camera dialog window?

The TWAIN specification document has:
DG_CONTROL / DAT_USERINTERFACE / MSG_ENABLEDS (ShowUI == FALSE)
but maybe it doesn't work for all devices.


Note again, you have to understand the TWAIN specifications
to use/extend my samples....