Created An Application With 3 Terminal Windows For Capturing Data?
Aug 2, 2011
I have created an application with 3 terminal windows for capturing data from 3 serial ports and outputting the data to a file. It seems to work well with one serial port, but when I fire all 3 serial ports at once, the application hangs. Here is the portion of the code that I believe is the problem. The code below is for Serial Port A. I have the same code for Serial Port B and Serial Port C
Private Sub ASerialPort_OnComm() Handles ASerialPort.OnComm
ReceiveBufferA.Append(ASerialPort.InputString)
Me.BeginInvoke(New EventHandler(AddressOf ReceivedTextA))
I have an application that will run on a terminal similar to a micros terminal. The terminal is already running another vendors app that captures the users logon ID from a swipecard. I need to capture the same logon ID at the same time. This is no problem, I just hook it.
The problem is I have another app which also captures swipes. In development I am running both apps for testing. It appears that when I unhook one app it unhooks both. Rehook and all is fine. As my two apps will never be on the same terminal this is not a problem. What I am concerned about is the vendors app unhooking mine or the other way around.
I would of thought that each app would have it's own ID and that each hook would be independent. I have considered finding a way to determine if a global hook is present and then use some logic to decide on unhooking or not but can't find anything.
I have a console application where I successfully have added custom menu item in the application's system menu using the Windows API calls. How do I hook into the events to capture the event raised when the user clicks on one of these menus? All my Google results talks about overriding the WndProc method, but this doesn't exist in a console application.
I created a windows console application because it needs to do some things at windows start up. However, in very rare cases I need to ask the user for some information, so I need to show a form. I created a form and went to my application properties. There I selected Windows Forms application as the application type. I call my form with the .Show method but it doesn't show up.
I expected this, but I have no idea how to solve it.
[EDIT]Just found out .Show does show it but only for 0.00001 seconds. I use showdialog now. Is this the right way to do it?
I have created a windows form application, but when i publish it (to cd setting), and then try and install it, (on windows 7, only tried there so far), I get a cannot open or read mainfest file, or cannot connect to download from the original pc's IP address error messages.
I have spent considerable time relearning visual basic (used microsoft basic man many years ago), and now want to use the program on my other computers I can upload/paste the error file if needed
I am using windows application. in that form i place picturebox, openfiledialogue, loadimage, saveimage buttons.using loadimage button to load image into picture box.using saveimage button to save image into one folder(save image into harddisk)at the time of save image first we crop the image like height:100 and width:100 and next it saved to folder.
Basically I have created a windows service using VB 2008 where I am trying to capture screenshots periodically.
The timer is working fine and I have tested this.
The purpose of the service is to monitor the desktop over night when the user is logged off, by capturing screenshots and saving them to file. This is so admin can be alarmed about security breaches etc.
The problem is is that I have not found a way to capture desktop screenshots as a windows service (or otherwise) while the windows logon screen is active (i.e: when the user locks the computer). I have used google extensively but to no avail
Basically I have created a windows service using VB 2008 where I am trying to capture screenshots periodically. The timer is working fine and I have tested this. The purpose of the service is to monitor the desktop over night when the user is logged off, by capturing screenshots and saving them to file. This is so admin can be alarmed about security breaches etc.
I have a Windows Forms application created in VS2005 which runs fine on the user desktop but when running in Terminal Server session it frequently locks up when the remote desktop window is minimised and the user is working locally.There is plenty of RAM on the server so this is not an issue, the only solution so far has been to force the user session to log off on the Terminal Server and then reconnect.
What is the code in creating a program that enables the built in web camera of the laptop when an intruder input a wrong password in the windows logon screen?
We are developing an application in VB.NET that will need to accomodate remote users logging onto a Microsoft Terminal Server using RDP through the MSTSC.exe client.
Is it possible to offer an 'Upload' button which will allow the remote user to pick a file from his/her local hard drive and upload to the server ?
The control behind the scenes is "HTEcab.dlI can bring it up in the toolbox, but I don't know how to make it work. There is no documentation I know of.So, I tried using the webbrowser control and going to the web location where the Terminal Emulator resides It is the ite and the private page is Sabre_view.asp (AKA WebPCFos).This brings up the terminal window and you can access the companies info thru this 60"s style technology.
Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
I want to implement basic finger gestures within one of my apps, but have got stuck at the first hurdle. There are a few examples on the net, but they seem to use custom controls that do not allow easy use of other controls. I really just need a way to capture the MouseDown/Up methods even through a child control, still allowing clicks to be captured by whatever control has been clicked.
Im trying to capture the result of a combo box and time/date stamp this to mysql. I have a working connection between the form and the db able can anyone tell me how to achieve this?
I am looking for the best way to capture and validate US & international personal data. I have to use ASP.NET 2.0 (vb.net) and no 3rd party web services. This are all client restrictions.
The main point of this is I have to toss their data to FedEx for a shipping quote. I think FedEx has a address checker but that web service was not approved in the scope of the project and its too late to get it added.
My current solution is to just let the field be required and free form then before I save their profile check to see if FedEx will return a quote. If it fails then I will ask them to recheck their profile or contact the admin.
I want to do a user interface for capturing data into a budget database but ran into a problem. Budget items are captured one line at a time. For example, say a Company wants to prepare budget for 2010, the entry may look like this;
Hi.. Im using an application to capture selected part of screen by resizing the form and capturing area of it!! now i want to reset the form once my work id done!! i mean if i press a "RESET" button the form should be load as first time it was loaded.(the real form size..)
I'm working on a project. Part of the project needs me to capture data, for example, email address, from certain rows/columns of a datagridview and displays them in a textbox on another windows form(form1.vb) with a click of a button(Add Contact button). I am familiar with doing these in web form but windows form are different and i am not familiar with it.
An application loaded on a citrix server executes with no problem. When we try to run the same program files on a virtual server, we get silent errors and we do not even see the application window appear. The program runs for a moment in task manager, but then closes down. BTW other .net apps run on the virtual server. Here is the error we see in the event viewer application logs[code]...
I'm trying to access Windows XP's Application Data - but I'm having a slight issue, I am using the following code:Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)This is working correctly in any other opperating system - but Windows XP - On Windows XP it directs them to: C:Documents and SettingsAdministratorApplication Data - this is not the folder I want.I want to access: C:Documents and SettingsAdministratorLocal SettingsApplication DataI have tried to do:
I'm wondering, is there a way to update databases of a windows application that is distributed on several computers all at the same time? is it done by using sql server? because I'm developing an examination system that will be distributed on several computers for students to take exams and I'm just wondering if an admin updates a questions database will the changes be applied to all other computers as well or should it be done manually? sorry if I sound stupid but I can't seem to understand this part of my work, I was thinking about switching to a web app since it seems easier, but again this data updating issue is giving me hard time. by the way I might link the application to an internal network, will this have anything to do with updating the databases?
An application data file, created by my own VB program, is visible to read and save from that application, but is not visible from Windows Explorer or Notepad. The icon, visible from my VB program, shows a lock. How can I remove the lock and see the program with Windows Explorer. (I need to copy to a another computer to use in a workshop next week.)
