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
[Code].....
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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Jan 23, 2010
How to send keystrokes in v.net automatically ..
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Jul 5, 2011
I have a code to rewrite an ini file, but characters such as 'ñ' will get changed to '?'. This way my whole ini file will get ****ed up, I have no idea to fix this and this is a serious issue for my application.You can find my whole source file here:
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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
[code]....
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Mar 1, 2011
I borrowed part of this routine to download files, and it works great; except when I download text files the returns aren't written into the outputted file. I've tried different web request and techniques with no luck in solving the problem.
Test file:[URL]
Private Sub DownloadFile(ByRef FileSource As String, ByRef FileDestination As string)
Dim request As WebRequest
Dim response As WebResponse
[Code].....
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Feb 19, 2012
So I made this neat little clock program in smallbasic and i downloaded visual studio 2008/visual basic 2010 yada yada.I clicked on graduate, made a folder under my documents to dump the stuff, finished installing, and then opened the project in VB.The SmallBasicLibrary couldn't be found
Such components as the GraphicsWindow wasn't converted to VB or something (probably because the library wasn't found).I followed Microsoft's instructions but I don't know what happened.
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Jan 17, 2012
While running an application in the IDE, the program properly handles Try/Catch/End Try blocks. This works fine for the most part, but is it possible to have errors generated in these blocks stop execution at the line with an error on encountering an error?
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Aug 23, 2009
I am building a windows program that I need to link to add and pull information from an access 2007 database. I really so not want to use SQL if at all possible.
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Aug 22, 2010
I am making a program that takes pictures of the webbrowser control on a set timer and save them in a picturebox.. I then use backgroundworkers to check the images against others stored in the program. My issue is, the backgroundworkers do not properly check the images against the ones I have stored in the program.Could this be because the images and picturebox are stored on the main thread, and no in a background worker?In other words, I am taking picture from my webbrowser and putting them in my picturebox. Then, I am comparing them with images already in the images. The only problem is, the workers are unable to properly compare the images.
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Feb 15, 2012
i'm working on a project that is trying to calculate the discount on three different kind of packages, each worth different prices.
what we are given is
package A= $99
package B= $199
[code].....
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Jun 22, 2010
I am looking for a code snippet which opens a image, creates a clone of this bitmap in memory disposes this opened image so that all handles are closed.
Usually we can open a bitmap using this[code...]
the following code however keeps the Image File locked until the application is running, any suggestions how to dispose it properly. (So that no handle is left open )
Things i already tried: use dispose method of bitmap <= doesnt work (need to write implementation)
Using Block also doesnt work.
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Sep 11, 2011
I'm trying to make a program of mine into a multithreaded application, but I've hit a pair of snags that I documented in the following code. I can expand this stub into a more efficient version of my existing application.
[Code]...
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Jan 6, 2012
End A statement which as far as i know doesn't close you program properly and hides errors. Right now i'm being forced to use end because i don't know how else to close my program properly. I'm not sure where my problem is but some of you should be able to fix it. I'm trying to make a game using directx with a game loop. This code is the skeleton of what i'm making.
Public Class Form1
Private ProgRunning As Boolean = True
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Me.Load
Me.Show() 'Make the form appear
Me.Focus() 'Give the form focus
[CODE]...
This code runs alright because end is being used but if you rem end out the error which it's hiding comes out. The error is "Object reference not set to an instance of an object." I'm not totally sure but i'm guessing that the error is refering to the form.
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Apr 7, 2010
I started this tutorial on sub procedures and am having trouble trying to get this program to execute properly. The problem lies with the total. I am trying to figure out the math part of it. When I hit F5 I can see this
Item Quantity Price.
Pizza Slices
Fries
Soft Drinks
Total
But I can't get them to add up and display the quantity and price. I tried the ByVal and ByRef code but am not sure if I did it right
Here is the code that I have so far:
Public Class Form1
Private Sub btnCompute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCompute.Click
Dim pizza, fries, drinks, total As Double
[CODE]...
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Jan 28, 2011
how to read a value from another program, based on a memory reference value? This is not an illegal or anything that violates TOS, I need to know how to do it for a work project that uses a already existing program to pull values from and compound upon it. The program that exist already doesn't have the function that my program does, but I don't want my users to have to manually put them into the program, I want my program to hook into the existing program and read existing values of a specific memory address. I have looked at reading strings from a memory stream but im not quite sure how to do it. I mean i can use cheat engine to find the value and memory address but i dont know what to do from there?
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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.
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Mar 25, 2009
Dim NotePadProcess As Process = New Process()
NotePadProcess .StartInfo.FileName = "notepad"
NotePadProcess .StartInfo.WindowStyle = ProcessWindowStyle.Normal
[Code].....
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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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 vb.net?
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Sep 9, 2011
I am facing a problem in my code. I am working on an application in vb.net, 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
[Code]....
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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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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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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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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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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
[Code]...
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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Dec 11, 2011
I am new here, i want to get few websites or books which provide me vb.net source code and examples.
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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.
[Code]...
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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 =
[code].....
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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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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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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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