How To Detect Keystrokes

Jul 3, 2011

I am fairly novice hobbyist developer. I am developing a simple calculator app. How can I detect the keystrokes, like when the user presses "1" key on numpad or they "1" key above Q key? I want to call the same subroutine that runs when the user click on the butten control "a "on calculator's main form.


Detect Keystrokes From Barcode Scanner?

Nov 7, 2010

I have built many applications that work with a barcode reader. What I need now is a means to reading the scanned item through a background services such as a windows services or something.My task is to scan a barcode on a identification label that is placed on a cut size of glass and record the order line item as being processed. This will update the database to reflect the cut size has been completed.My restriction is the processes keeps an application showing a cut pattern of the stock sheet of glass in focus so I can not have another application active to capture the scanners results. Here in lies where I have to have a application running in the background listening for a text or alpha-numeric string that will tell the application to run the scan.

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Detect Keystrokes And Send Mouse Clicks

May 31, 2007

i'm trying to build a application for my buddy who plays online games and has asked for a simple program to click the mouse button within his game that he plays for a certain amount of time with a certain duration between. my questions comes ( and i searched but didnt find much useful information for .net framework anyway) about how to detect a combination of keystrokes to start an action and further more to send a click event to the game that should be main focus. i'd also appreciate any tutorials on sending information to other forms controls etc.
thank you for any help

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Cannot Send Keystrokes Via Sendkeys

Mar 25, 2009

Dim NotePadProcess As Process = New Process()
NotePadProcess .StartInfo.FileName = "notepad"
NotePadProcess .StartInfo.WindowStyle = ProcessWindowStyle.Normal


I am trying to send some keys to a program that I launched, but every time i send the keys focus is not on the program and the keys are sent to the wrong program. Is there a better way to send keys to a program or a way to set focus on a certain program?

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Counting Keystrokes And Clicks?

May 23, 2010

I'm trying to create an application similar to the site WhatPulse, which will generate an image with my clicks and keystrokes. WhatPulse only updates the image once every 24 hours, so I am going to make an application to keep track of that for me, only with realtime stats.

How can I count total keystrokes (outside of the application itself) as well as total clicks, in

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Keystrokes Carry Over To Other Objects?

Sep 9, 2011

I am facing a problem in my code. I am working on an application in, its a windows based application. On one of my form I need to perform so many data driven operations.

if I press tab on one of the text box, I need to set a computed value in other text box and need to set the focus to that text box.

I write a code that is a like to this.

Private Sub TextBox1_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyUp
Select Case e.KeyCode


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Send Keystrokes In Program?

Jan 23, 2010

How to send keystrokes in automatically ..

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Send Keystrokes To A Different Application?

Jul 26, 2009

I am using visual basic code, specifically the sendkeys.send method, to send keystrokes to  a different application,  in my case Acrobat Reader.  Here is my problem.  I am sending instructions and text to define a path to a file I want to open in Acrobat Reader.  Every keystroke is being sent and interpreted in Reader correctly except the Colon.  This is the line of code I am using:Sendkeys.send("C:")

I have tried every variation of this simple line of code I can think of, but the result is the same.  Reader for some reason wants to interpret the Colon as Uppercase Q, so what I get is CQ.  This of course totally messes up my path to the file I want to open.Sendkeys. sendwait("C:")  Behaves the same

I understand there are timing issus with this method so I have added code to my app.config file suggested in this forum for taking care of the timing issue.  I have also inserted delays into the execution of the program steps.  Nothing I have done solves this problem.I wonder if anyone else has experienced this or a similar problem and if so what was done to correct it.

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Sending Keystrokes To Another Application?

Jan 19, 2009

I'm trying to do some interface for a game for people with mobility probs, like Parkinson, so grouping several game features in just one control.Everything goes fine but having problems sending keystrokes to the game window when they have modifiers.Lets say I want to send Alt+F1 keys, according all the search I have done, the code is:My.Computer.Keyboard.SendKeys("%{F1}")but it does just like I sent an F1 Keystroke: My.Computer.Keyboard.SendKeys("{F1}").I need to send Function Keys alone and too with Alt and Ctrl modifiers, but not success with modifiers,  the game only gets like an alone function Key was pressed.

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Sending Keystrokes To Control?

Aug 29, 2010

My form contains a Button and a Flash Control. The Flash Control contains a game referenced to a website. I want to send keystrokes into that control (the game) without having to be in focus. I'm not experienced in flash so when I decompiled the game, I had no idea how to script a way for it to work programatically.

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VS 2008 Multiple Keystrokes?

Dec 30, 2010

Does someone knows how to read multiple arrow keystrokes at the same time.Like when I have up + left so it should do something like diagonal up-left?

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VS 2008 Only Allow Certain Number Of Keystrokes?

Apr 20, 2010

I'm trying to capture 4 keystrokes from the user and store them in an array. Once the 4 keystrokes have been entered, I would like to make it so the user can no longer enter anything, or at least have it show up on the screen.

Here's the logic I have so far:

For count As Integer = 0 To 3
Select Case e.KeyCode
Case Keys.D1
recOrder(count) = 1


What I wanted this code to do was to count the number of key presses and what keys were pressed, and compare that array to a predetermined array.Edit: I forgot to mention that even though the array has been filled with key presses, when the user hits a key, the screen still updates. Also, this code is in a Keydown event.

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.net - Send Keystrokes Only To The Form And Not Other Window?

Mar 13, 2011

How do I make the form send keystrokes such as Tab, Enter, Left Arrow etc to itself without interfering with other programs? If I use the SendKeys.Send method, it would send it to whatever window is opened. Is there a way to only work with the form? Very quick random example: Let's say I have 5 textBoxs and I click the 'Tab' button 5 times. What would happen ?

It would change the focus from one textbox to another right? Can I make this happen automatically ... like make it happen in the background and only to the form itself. So If I'm typing something on Notepad, I don't want to receive those 5 tabs. By the way I know I can use this code to change the fofucs, but remember its only an example.


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Convert Keystrokes To Uppercase As Typed?

Aug 24, 2009

I have a fairly large project (Point of Sales) written in VB6. It has beenused successfully a 2 stores since 2001 (with updates of course).I would like to convert it to VB2008 (although I know about VB "fusion") just to keep it up to date and modernize it a bit.Since using the VB converter brings up such a lot of junk, I'm rewriting each module and form from scratch (although using as much of the original code as possible). One of the functions I'd like to retain is typing in a textbox, and converting each keystroke to upper case as it is typed.Here's the code I use in the VB6 version:

Private Sub txtDescription_KeyPress(KeyAscii As Integer)
Call EnterToTab(KeyAscii)
Char =


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How To Send Keystrokes To Specific Window

Dec 19, 2008

In Visual Basic 2008 Express Edition, how would I send keystrokes to a specific window. Right now, I just keep the window I want on top and use sendkeys.send("{enter}"). The window that I want to send keystrokes to is my applications window.

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Keystrokes In Visual Basic Application?

Dec 9, 2011

I am looking for some tip on how to send keystroke of a mouse button click. Basically my requirement is when a list box is dropped it shows a datagrid, right now user has to click 2 times to get focus on datagrid, although i send a focus on datagrid when list is dropped from dropdown event still the focus stays on list box, i have to click 1 time to release focus from listbox then click on datagrid to set focus. I like to automate this 2 clicks with a keystroke. I dont see any mouse button click keystrokes.

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Program Not Reading Keystrokes Properly?

Jun 10, 2011

I was trying to make a program which displays two chars A and B on the screen. Using the WASD keys, it lets you move the A char around and using the arrow keys it lets you move the B char around.

I wrote the following:

Module Module1
Dim Box_A(1), Box_B(1) As Byte
Dim Allow_Draw As Boolean


When I run the program, if I press any of the WASD or arrow keys the corresponding char doesn't move. To make it move, I have to hold down any of its keys for a bit after which I can move the char just by pressing its keys. But then, I have to do the same for the other char.

So, if I want to move B I have to hold any of the arrow keys for a bit. Then I can easily move B just by pressing any arrow key once. Then to move A I have to hold any of the WASD keys for a bit and then I can move A just by pressing any WASD key once.

Is there any way I make make each of the char move just by pressing its ket once?

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Send Keystrokes To A Serial Port?

Mar 11, 2010

I am trying to send a ctrl-x keystroke to COM2 and I ahve to code to open the port and read and write but when I tried to send Chr(Keys.ControlKey + Keys.X) it did not work

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Send Keystrokes To An Instance Of Webbrowser

Aug 16, 2010

I cannot seem to wrap my head around the SendMessage function/method. What I am trying to do is send keystrokes to an instance of webbrowser1 within my application. Can someone give me a decent example of the code I would need to create to process this using the keystrokes below.


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Send Keystrokes To An Unfocused Window?

Jan 8, 2010

I'm trying to send the keys "ABC" and "Enter" to Notepad when I press a button. I've been reading forever on Hooks, "SendKeys" functions, but I can't figure it out. I don't think I need to use a hook, because I'm not making a hotkey or anything, I'm just pressing a button and sending the keystrokes to a window when it's not focused.

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Send Keystrokes To Background Application?

Jul 20, 2010

how to send keystrokes to an application that does not have focus and is not selected. i have read about sendmessage, but am not sure how to use it or anything, not even sure if its what i need.i dont need to send anything but normal character keystrokes?im using VS 2008?

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Sending Keystrokes To Directx Game?

Apr 8, 2012

I did like to make a management app for a directx game, however postmessage sendmessage and sendkeys do not work...

it's for skyrim, not an online game.

how to send a key to is? have been searching for hours now and couldnt find anything besides people that say they used directinput but leave no resources or examples...


That application can do it... Weird that he's using Sendkeys because it doesn't work in visualbasic

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Sending Keystrokes To Inactive Window

Oct 24, 2010

I'm sending keystrokes to in inactive window. And I got that all good.

But now on my program there is a textbox pass, and I want to get that text, and send it threw postmessage. But It doesn't seem to work.

Dim pass As String
pass = textbox1.text
PostMessage(windowHandle, WM_KEYDOWN, pass, 0)

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VB Sending Keystrokes To A Minimized Window/app?

Apr 26, 2012

im a complet noob in vb . i have been trying to figure out how to send keystrokes back to my own application , while minimized/ Or focused on an other window.i think i need to use PostMessageA . i read about it on forums. But its like chinese for goal is to run these little programs by the 100's on 1 pc. and they just press a key in their own application , over and over.i was thinking something like this

Private Declare Function PostMessage Lib "user32.dll" Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Private Const WM_CHAR As Long = &H102
PostMessage("notepad", WM_CHAR, "T", 1)

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VS 2010 Send Keystrokes To Other Apps?

Jan 27, 2011

i am making an app for my media server, but now i ran into a little problem. Once i press pause on my app, i want it to pause my VLC player. One way is to press Space bar in VLC. Is there any way to send the Space bar key to VLC? (or is this not possible in, If not: witch coding language should i use?)

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C# :: Capture Keystrokes (e.g., Function Keys) While A Messagebox Is Up?

Jun 15, 2010

We have a large WinForms app, and there is a built-in bug reporting system that can be activated during testing via the F5 Key. I am capturing the F5 key with .Net's PreFilterMessage system. This works fine on the main forms, modal dialog boxes,etc.Unfortunately, the program also displays windows messageboxes when it needs to. When there is a bug with that, e.g., wrong text in the messagebox or it shouldn't be there, the messagefilter isn't executed at all when the messagebox is up! I realize I could fix it by either rewriting my own messagebox routine, or kicking off a separate thread that polls GetAsyncKeyState and calls the error reporter from there. However I was hoping for a method that was less of a hack. Here's code that manifests the problem:

Public Class Form1
Implements IMessageFilter
Private Sub Form1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles


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Communications :: IR Task - Sending Keystrokes On Laptop

Sep 11, 2011

I need to send keystrokes using my InfraRed port on my laptop. As simple as a TV remote control. -being able to send numbers: 1 .. 2 .. and left right etc ... How to access the IrDA port?

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Panel, With Buttons, That When Pressed, Simulate Keystrokes?

Mar 21, 2010

I wanna set up a panel, that will, when opend up will sit on the side of the screen. It will consist of around 8 or so large buttons each with a different name on them. When the buttons are clicked on they will send the keys Ctrl+shift+F9 for example. Each different button will have a different variation of keys that it will automaticly send. The idea behind this is that I will have another program running that will be se up to perform actions when certain keys are pressed (Autohotkey if your familiar).

Now I'll be honest, I dont have a clue with visual basic, or any code other than html, hence why I'm posting here hoping I can get some help. Can anyone provide me with some information on how to set up buttons or how to do this entire task?

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Send Keystrokes To A Computer If A Button Is Pressed?

Mar 10, 2012

I wrote program that will send keystrokes to a computer if a button is pressed. The button is wired to a db9 connector and plugged into the pc. The program works, except I can not figure out how to detect if the cable gets unplugged. I am monitoring the CD pin change event to send keystrokes, but if the cable is not plugged in then I need it to send a messagebox.

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Send Mouseclicks / Keystrokes Into Minimized Window?

Mar 3, 2009

I know how to send mouse clicks and keystrokes into an application when it is open and active, but this particular application the task is very repetitive and can be done with a script of sorts. What i want is how do i make a program to be able to send inputs (key clicks) into the application when it is minimized (the application minimized that is). doing this minimized would then allow me to do other more important things whilst the vb program is sending instructions into the other app.[code]...

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Sending Keystrokes To External Flash Application?

Jul 12, 2011

I have tried appactivate and by getting the process name and window title and nothing works. Nothing I try will send keys to the application.

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Capture (keystrokes) Instant Messages Of Msn Live Messenger In .net?

Jun 20, 2011

How to captures instant messeges of msn in windows application. or how to captures the live chatting of msn in windows application

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Captures(keystrokes) Instant Messages Of Msn Live Messenger?

Jun 4, 2011

How to captures instant messages of msn live messenger.How to captures(keystrokes)form live conversion of msn in to create the txtfile of that capture keystrokes of that instant messeges og live messenger of MSN.

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Keystrokes In Winforms App Causing Window To Close Unexpectedly

Apr 1, 2010

Whenever I enter text, even a single character, into a textbox in any Form in my application it causes the form and its parent to close. I've checked for the following so far:

Errant/mis-assigned event handlers that may be interpreting a keystroke as a Form cancel I am using keypreview in several windows but debugging shows this to not be a cause Happens in any form of the application Happens even with brand new text boxes dropped on the form Tried removing the WithEvents declaration from text box declarations (VB.NET)

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VB 2008 Mouse & Keyboard Recorder - Recording Keystrokes

Oct 20, 2009

I have seen that there are many "Mouse & Keyboard Macros/Recorders" out there & I was wondering how they are being created in visual basic. I have looked within the Microsoft forums, but havent really seen any specific coding that works for the kind of recorder that I'm trying to create.


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VS 2008 Read Multiple Arrow Keystrokes At The Same Time?

Jan 29, 2010

how to read multiple arrow keystrokes at the same time.Like when I have up + left so it should do something like diagonal up-left? I have search the forum to no luck, also tried on keydown, keyup, ProcessCmdKey, etc etc... no good.

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Webbrowser Control Input Text Box Limited Keystrokes

Apr 16, 2010

I have a Webbrowser control on my Windows Form that loads a local page using the DocumentStream property. The page contains an input element of type text. When rendered, users are able to type anything they wish however they are unable to use keys like "Delete" or typical Cut & Paste functions. If it were not for the fact that you can type data and Basckspace to delete the character one at a time. If I load the same page in Internet Explorer, the input box functions correctly.

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Creating A Program For Which Will Calculate The Time Taken For A User To Make A Number Keystrokes?

Feb 18, 2012

I am creating a program for which will calculate the time taken for a user to make a number keystrokes. I want to start the timer running from the beginning of the first key stroke and end on the final keystroke. Each keystroke has been linked to a label which will change colour according to whether the key has been pressed. When the keystrokes have been finished I want to save this timespan in a field in a database. To test that the timer is running I have made a messagebox which will show the time taken however it is constantly showing zero and the label for the final keystroke is remaining in the keydown colour.

Public Class Form1
Dim dteStart, dteFinish As Date
Dim span As TimeSpan


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Forms :: Begin Encrypting Keystrokes When The User Focuses On A Password Field?

Oct 11, 2010

basicly im attempting to make a key encoder type application that i want to begin encrypting keystrokes when the user focuses on a password field . Is it possible for a windows forms application to do this and if so how can it be done ?

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Controlling Outside Applications - Resize Multiple Applications And Send Keystrokes To Each One

Sep 12, 2011

I am working on a project that is used for key broadcasting. Don't worry nothing illegal, I'm making a multibox application for world of warcraft. However I am having trouble when it comes to launching and manipulating other applications from another.


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