Perform Twain Scanning Using The Twain_32.dll?
May 2, 2012
I am trying to perform Twain scanning using the twain_32.dll, but no luck. Whatever solutions I have got call the dll GUI.
I want to perform scanning by passing custom settings to the scanner for every scan. For eg. In duplex I want to scan the Front side in color & Back side in Grayscale. OR Scan every Alternate page as Color and B/W
The combination can be anything. I've tried & and succeeded using WIA but it limited me to a certain extent. how to proceed using TWAIN and without displaying the GUI. I am open to options where a communication to Twain Connection Manager is established & commands are passed.
View 4 Replies
ADVERTISEMENT
Jan 28, 2011
So - we are FED UP with our medical records packaging (document imaging) system and want to create a simple filing interface for our scanners to use in VB. Part of this deal is getting VB to interact with a TWAIN Driver.
There is some code out there for ASP.NET and C# - does anyone know of a VB.Net based code I could look at?
I have spent part of my day trying to recreate the ASP into VB but the calls are just different enough to get interesting.
View 5 Replies
Feb 18, 2010
I am making an application to scan with TWAIN. I can get to state 4 OK, and scan with the UI. But I need to hide the UI. When I do this the scanner does nothing. I believe it needs some capabilities set (like height and width). So I try to get the physical height and width so I can set them. Herein lies the problem. I get 18874402 back for the physical height and width. (neither can I get the units). I get RC=SUCCESS. I don't think it could be a signed/unsigned issue because what boundary is at 18 million +/- with whatever units? I tried some other code I found but that returns 0. I can't figure out what I am doing wrong. Here's the code:
[Code]...
View 8 Replies
Jun 1, 2012
I would like to know if there is a built-in TWAIN Scanning library in .Net 4 to use it in VB.NET.
View 1 Replies
Jan 20, 2011
How to implement Twain OCX in VB.NET project for scanning or loading pictures?
View 1 Replies
May 20, 2011
So I got a working code for my scanner HP. it works perfectly
[Code]...
View 2 Replies
Jul 12, 2009
anyone tried using twain in scanner.I wanted to store in my database
View 1 Replies
Sep 9, 2011
I have been working with TWAIN driver for few days. I have learnt how to connect to the scanner or get the working scanners connected to the machine. I am having a problem now, eventhough i get connected to the scanner, I am not able to set the capabilities from my application. The scanner scans using the capabilities that are set on it but not from my application. I have looked at the sample code given with twain pro but even that doesnt set the capabilities of the scanner. For example if the scanner is set to 300 dpi and I set 200dpi from my application, the scanner scans with 300 dpi. It gives me an error saying that the value given is out of range.
View 1 Replies
May 29, 2009
I am using a TwainPro4.dll for scanning purposes in my VB.net application framework v3.5.When i run my application i get the below exception,
LoaderLock was detected
Message: DLL 'C:WINDOWSassemblyGACPegasusImaging.WinForms.TwainPro44.0.22.0__80d669b8b606a2daPegasusImagi
[code].....
View 7 Replies
May 17, 2011
I need to write a program that will capture a twain scan, then let the user input a file name and append a date and time stamp to the file. Afterwards, it should upload the file to a ftp share on our network. As a bonus, I would like it to log the transaction to a SQL server so we can verify the file was uploaded. The catch is, I have almost no programming experience. I have written a small program here and there, but never something that I had to call an outside source for besides SQL. We do have an in-house VB programmer, but he is to busy to do something like this. I wanted to give it a try myself before hiring someone else to do it since it sounds like such a simple program. I know how to layout the basic forms and I can probably figure out how to log the transaction, but I am looking for examples on twain scans and saving to ftp.
View 4 Replies
Oct 29, 2009
I've installed visual studio 2008.is the visual basic in that package known as VB.net? My 2nd question: how can i use scanner for scanning using VB.net?do i have to use WIA? or i can use the default program for scanning?
View 1 Replies
Feb 15, 2012
I have been messing around with the scanning packages(WIA and TWAIN) and have gotten WIA to work, but not as intended. At first I used the common dialog to show a Image Aquisition Wizard, but that did not return desired results. Next was twain, but st managed to find was the same C# program over and over and over again, "TwainGUI". A program written by NETMaster on codeproject.What I would like to do is scan from the ADF and save immediately to the users working directory. The problem is I can't get WIA to keep scanning until the ADF is empty.
Psudo Code:
Start:
"Set scan settings"
[code]....
View 2 Replies
Oct 23, 2008
I am ask about the possibility of scanning document (by scanner) from within vb.Net with vb6 I used Kodak image controls(imgscan, imgedit) but with vb.net it seems that they are not working properly.
View 3 Replies
Mar 4, 2009
How I can use scanner to scan an image and put it in PictureBox using VB.NET
View 4 Replies
May 18, 2012
how to program an application that scans the computer in the network in vb.net?
View 3 Replies
Nov 6, 2009
Is it possible to look for all current instances of a specified object without specifically IDing each instance as it's created?
View 12 Replies
Nov 9, 2009
So I got a request to update specific information on a thumb drive from my program. The idea is that the user does not have to select the drive. If you plug it in and select and option on the program, it will find the drive automatically and update some files for my specific purpose. Is there a way to automatically find a drive in a program?
View 1 Replies
Jan 29, 2011
How can i connect a scanning device to a computer using .net? Code 128.
View 4 Replies
Dec 20, 2009
I was just wondering if there is anyway to invoke finger print scanning in a .NET application? (Eg. Windows 7/Vista Login screens - assuming they have the hardware of course).
View 1 Replies
Dec 7, 2010
I'm using the LIKE command as in:
If str Like
"*[^s
!-~]*"
Then
Unfortunately, this expression is true for the space character. I don't understand why. I'm trying to determine if str contains any special characters other than the ones indicated by s. If it does, I plan to process the string further.ebassador "Find it, fix it, move on.
View 10 Replies
Mar 31, 2012
I developed a winform .NET 4 application that has the ability to asyncronous save image from scanner using Bytescout Scan. Anyway I noticed that in some cases (with some scanners) the scanner's GUI opens and then closes immediately after load without performing any scan. Since no error message is raised either from my code and from scanner software itself; is there some settings/tweak somewhere I should pay attention?
View 2 Replies
Apr 19, 2011
I'm not really sure where to begin for this. I'd like to scan a specified server directory for all files that it contains in the directory. (I will then compare the sizes to files already existing on the user's machine, but that I've got covered.)
If there's any way I could get around using FTP, I'd be very grateful, as this won't be entirely secure.
I did some exploring of the WebClient and WebRequest classes, but failed to conceive of a way to do this.
View 4 Replies
Jun 12, 2011
I have a multiline text box which is used to enter barcode numbers into. I have a barcode scanner and all the barcodes will end in L2, L3 or L4. Once a barcode is scanned in I need VB to detect either L2, L3 or L4 then go to a new line and repeat. Where I can start to accomplish this?
View 4 Replies
Dec 16, 2009
I come straight to the point without going too far. I need to scan all the pixels of a generic image and for each pixel derive the RGB components. I started with the following function that performs its task very good and returns 3 array (R, G, B) with the different values, but unfortunately is too slow.
[Code]...
View 1 Replies
Nov 14, 2010
Alright well, I'm sort of new to VB.NET.I want to create a scanner that scans websites from lets say google or bing.It then dumps those websites into a list/textbox. It then scans each website for a directory, and if the site says something like "test page", then it dumps THOSE into another list/textbox.
View 1 Replies
Feb 18, 2011
Is there any C#/.NET code (or anything that is easily convertible to .NET, such as Java/Python) for virus scanning that is not under the GPL/AGPL ? I found a C# wrapper for ClamAV, but ClamAV is GPL... Something LGPL would already suffice, and as a matter of fact, would be something I prefer. Preferably something in fully managed code, but DllImport is also welcome. COM interop is a no-go, I need it cross-platform (=Windows & Linux).
View 1 Replies
Feb 2, 2010
Where I can find virus scanning/detection algorithms?
View 3 Replies
Jul 14, 2011
I am developing an application which will be used to scan the barcode from a particular document, as i am just developing who i will get know that barcode scanning is working i dont have device at the moment
View 2 Replies
Nov 17, 2009
I have the following records in DataGrid .see in Pic. On button click, I am scanning thru all the records. Just tell me that dataGrid RowCount is from:
For j = 0 To DataGridView1.RowCount - 2
Or
For j = 0 To DataGridView1.RowCount - 1
Private Sub Button11_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button11.Click
[Code] ......
View 4 Replies
Apr 21, 2011
I'm re-doing a small application I made a long time ago. It's similar to CCleaner, where it scans specific directories and removes temp files.My old application worked, but it was messy and only had a handful of locations. The new version has a ton more locations and files, but that creates a problem with how the original app was designed.In the old app (I made this a very long time ago) everything was just jammed into the main class, including variables, methods, etc. There wasn't a whole lot of thought put into it.Now, I'm trying to figure out the best way to make this class so when I'm done, I can release it to the community and it be easy to use.The main problem I'm having is how I should set up the methods. There are so many different types of directories and files, that I'm not sure if I should create a separate class for each method, or have a bunch of methods in one class or have one method in one class.
There are some directories that need to be searched recursively, some that don't, some files need a filter and others don't. I think that's the extent that I need.So, what do you all think is the best option so that it will be easy for the end user to just add the directories/files and start scanning?Right now, I have a base class that has two properties. One for directories and one for files, both of which are arrays.Actually, just as I'm typing this, I'm thinking I could create a class that represented a directory and another that represented a file. Both classes would have properties set for them that I could use in the main scanning class. That would allow me to identify what was needed for that directory/file, like recursive searching and filters.
View 4 Replies
