I would like my vb.net software running on an independent system be able to
read the data going from a proprietary system to a dot-matrix printer. Few
questions - are there any commercially available or "hack" devices available
that would allow me to tap into the data the proprietary system is sending
to the dot matrix printer?
How could I get my vb.net software to respond listen to and respond to this
data stream? Are there any commercially available controls?
Now for those of you asking why would I do this? I have a system that the
DOS based and 100% proprietary that is very important - but, I need to
monitor the data from it when it prints to the dot-matrix printer - so, thus
comes the need for an independent system that can monitor and read the data
stream going to the printer.
Any help/guidelines would be appreciated. 3 1571
Hi Sarah,
If the program is doing its printing via a Dos Printer interrupt, one
possibility is to hook into the interrupt and syphon off a copy of the data.
Regards,
Fergus
How would you hook into the interrupt from another independent computer
system?
"Fergus Cooney" <fi*****@post.c om> wrote in message
news:uK******** ******@TK2MSFTN GP12.phx.gbl... Hi Sarah,
If the program is doing its printing via a Dos Printer interrupt, one possibility is to hook into the interrupt and syphon off a copy of the
data. Regards, Fergus
Hi Sarah,
I wasn't sure exactly what you meant by 'independant' so I focused on the
Dos side of the equation. Being a Dos system means that its interest in the
outside world is zero, so, short of virus-like technology, any interrupt hook
is going to require someone to put it there. It would run as a TSR which would
need to be loaded before the application was started.
I'm sure there are cable-tapping/network-sniffing devices (legitimate) but
that's well beyond my ken.
Regards,
Fergus This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
by: rbt |
last post by:
Hello there,
Depending on the firmware version of the HP printer and the model type,
one will encounter a myriad of combinations of the following strings
while reading the index page:
hp
HP
color
Color
|
by: notregister |
last post by:
hi,
i have been trying to send a printer-ready data to an unknown printer to
print. the reason why the printer is unknown is that i do no wish installed
any printer driver. so at the end my printing would have to bypass the
printer driver..
i have read several article on sending file directly to a printer, but i
could not understand how could i get the printername from the
ports(especially when there is no driver install)? Can anyone...
|
by: pmclinn |
last post by:
I have a datadump from internal equipment that is about 500 megs. The
file is dumped every morning in a comma delinated format. Instead of
downloading this file to the client and then processing it is there any
way to stream the data into the client and read/parse it as it comes
in?
The file is on our intranet....
Example file:
|
by: Joe |
last post by:
Anyone can suggest the best method of reading XML and adding data to
ListView?
Here is the xml data structure::
<xml>
<site>
<url>http://www.yahoo.com</url>
<lastupdate></lastupdate>
<check>1</check>
|
by: sven.suursoho |
last post by:
Hello,
In main(), the first output API is what I try to achieve. Unfortunately
it fails, printing first string as pointer instead of human readable
message. Tried to initialize str(""), set new buffer etc, but nothing
worked.
Ideas? Also might use another internal construct, only API is needed
and requirement to reuse existing std::ostream inserters.
| |
by: Jerim79 |
last post by:
I did try to find the answer to this before posting, so this isn't a
knee jerk reaction.
What I am trying to accomplish is to have a script that opens a
cookie, reads a value, and then use a switch/case to take action based
on that value in the cookie. I want to set the cookie manually, so I
don't need setcookie(). I see that in PHP it stores the cookie in
memory. Is there a way to have PHP just read a cookie from the desktop
machine?...
|
by: Sir Psycho |
last post by:
Hi,
For some reason, when i step over this code, it returns the full byte
stream im expecting from the server, however when I let it run with no
intervention, it only seems to grab a small chunk on the stream.
What am I doing wrong? There is more code than this, but this is the
problem code.
|
by: rsk |
last post by:
Hi Friends,
I have the following code which reads the hexadecimal data from the
"data.txt" file into the arrays.
But when i run this code it is reading some garbage data after reading all
the data.
--------------------------------------------------
|
by: Willy Stevens |
last post by:
Hello,
In my application I have to read sometimes quite big chunk of binary data.
I have a buffer which default size is 32000 bytes.
But how could I read binary data that exceeds 32000 bytes?
Is allocating more size to buffer and copy data that exceeds 32000 bytes at
tail the only way
or are there any other possibilities?
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
|
by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
| |
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
|
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
| |
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
| |