Detect Keypresses In Program?
May 22, 2009How do I make VB constantly check for keypresses?[code]...
View 1 RepliesHow do I make VB constantly check for keypresses?[code]...
View 1 RepliesI've started building a small game where you move around a PictureBox control with keystrokes using the arrow keys. Everything was working fine....until I added a button.
Now the button steals the focus so that every time I hit an arrow key hoping to move my image, it just selects the button.
Is there any way to make the button selectable only by mouse click?
I'm making a mario-like clone and I just finished the jumping code. The only problem is that moving while jumping is extremely hard because if you hold down the up key and right key at the same time, neither one activates.
View 10 RepliesI'm working on a web browser named Hyvar.NET and i'd like to integrate a form of shutdown detection into it.
Currently, it simply uses a tri-option setting to decide how it opens - like this
If My.Settings.LoadLastOnStart = True Then
frm.wbTab.Navigate(My.Settings.LastOpenedPage.ToString)
ElseIf My.Settings.HomeOnStart = True Then
[Code]....
Each variable is appropriately named for its job as you can see.
However, i want to change this to react to correct and incorrect shutdowns - unexpected and user instigated ones for example. I.E: if the settings variable for the detection contained 0x000000, it could indicate a clean exit and continue as normal with a new session, but 0x000001 would indicate an unclean shutdown and present the user with an option of reopening the last session or continueing as normal, like in IE 7/8
Im 100% sure this will require a windows API call
I found the code linked below on on of Microsoft's websites for listening for keypresses, however I can't seem to ge thte code to respond?
View 5 RepliesI want a way to be able to control all the keypresses on a given form. I tried overriding a WndProc of a form to achieve this but I noticed that my text box keypresses are not going to that wndproc. Whats the way to achieve this?
View 6 RepliesI am currently creating a Space Invaders game. Basically what I want to do is being able to move and shoot at the same time. The problem is that whenever one button is pressed to execute an action it cancels out any other button being pressed. I don't want that to happen. Currently I am just using Key down. How I can have multiple key presses at once?
Private Sub frmain_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
Dim Loc As Point
Select Case e.KeyCode
Case Keys.Left
[Code] .....
That's my code. This is basically the last thing i need done in my project.
[URL]
Damned. Is there a managed code somewhere in vb.net where mortals can simulate key presses?
Is there an e-book or book somewhere about it?
im trying to click a checkbox im using Sendkeys.send("{tab 13}")
sendkeys.send("{+}") which i have been told will click the checkbox but unfortunately its not happening.
How can you simulate keypresses and releases? I know you can essentially hit a key with Sendkeys.SendWait, but how can your code press and hold q, for example? I essentially wish to be able to call something like press("q") and release("q"). The effect would be the same as physically holding them down.
View 1 RepliesI use keybd_event and mouse_event to simulate keypresses. I want taht to still work when the user is switch (Xp supports several users as we know).
Well, it doesn't.
I've heard sendmessage is more reliable,.
I manage to simulate click easily.
SimulateClick2 = SendMessage(hwnd, BM_CLICK, 0, 0)
Now, how to do so to simulate keypresses?
I've been looking around for a way to accomplish this to no luck, but is it possible to have a series of keypresses (Like Ctrl + Shift + O) or something like that act as an event? I'm trying to find a way to make something like this show a form using the old Me.Show() code.
View 3 RepliesI have the following code to handle keypresses on the form:
Private Sub Form1_KeyDown(ByVal sender As Object, _
ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
Debug.WriteLine(e.KeyCode)
[Code].....
The first time I press any of the arrow keys the code is not executed and a NumericUpDown(NUD) on the form gets the focus. The rest of the times the arrow keys are pressed everything is fine, until I click on a button. Then the problem repeats, focus NUD, then fine.
I am attempting to keep user inputs into our application as clean as possible. One way I am attempting to do this is not allowing incorrect data type in fields (not allowing alpha characters when expecting numeric values)I found and implemented the following code:
Private Sub txtSocial_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtSocial.KeyPress
Dim UserKeyPress As Char = e.KeyChar
Dim isKey As Boolean = e.KeyChar.IsDigit(UserKeyPress)
[code]....
Objective : Time how long a user has been on the internet. I have never delved this deep into Visual Studio. I am suing Visual Basic 2010 Express. Please move it if you need to.
I want to have a program - that will detect running processes. If Internet Explorere EXE or Chrome or FireFox exe or any other browser is installed - as soon as that process starts the timer will appear.
When those processes are closed by the user the timer stops counting. This is possible but i dont know how. But i only want it to time just one internet process because timing them all when they are openend up at different times could cause bugs. Unless on the time form you have 1 timer for IE, 1 for FFox, 1 for Chrome 1 for Opera..
does anyone know how to get my program to scan for a program such as ie then add it to a toolstrip as a button then when i click it it opens ie??I like..... Understandable Answers
[Code]...
How can my program detect if 2 nodes have the same name ?
View 3 RepliesThe user has to enter the text in the textbox , to write a text user need to press the keys and release the keys. Write a code to count the number of keypresses and keyreleases and display the value in the labels.
View 1 Repliesim trying to make vb.net translate input from an external device into keypresses. when bit = 1 i want the key down, when bit = 0 i want it up unfortunately with sendkeys it just sends the same keystroke over and over again. ive googled for days without finding a good answer.
View 7 RepliesI have Windows XP Pro, SP3 on a Dell Dimension 9150 with VB 3.0 and all other Visual Studios up to and including VS2010 Pro.I'm not exactly an expert VB programmer, but I have written several different programs.I would like to write a VB program to run in the background and detect when the program regedit.exe/regedt32.exe tries to run.Once the regedit program tries to run, I would like my background program to pop up a message with three options. Allow, Do Not Allow and Cancel.
The Allow button would allow regedit to run.The Don't Allow button will not allow regedit to run and continue to run in the background. The Cancel button would not allow regedit to run and would cancel the background program.Can this be done?I would explain why I want to do this, but it would take too much of this thread. However, if anybody really needs to know, I will accommodate their request.
How to detect collision for a game in vb.net ( i using picturebox for every thing ).
View 1 RepliesHow to handle the Network failure error message,and how to simulate it?
View 3 RepliesIn my program I need to make various word replacements but I don't want to replace the word if it's encapsulated[cod]e...
View 1 RepliesHow do i actually detect a card is being read by a card reader by using events handler?Like the card reader is connected to the PC using USB, and when a card is flash on the card reader, it will be detected.
View 5 RepliesI have a custom button in IE8 which starts up my program. Now what I wanted to do, was pass an arguement such as: 'myprogram.exe /ie'
From the IE8 button, and well my program will do rest from there. Now my program adds the button just fine, shows up fine, all that works. But each time i'd add an argument after my application path, IE8 would say it can't find the program. If you want to test this out, goto run, type in gpedit.msc, then 'User Configuration'->'Windows Settings'->'Internet Explorer Maintenance'->'Browser User Interface', and double click on 'Browser Toolbar Customizations'. And in the small window that pops up, is an option for adding custom buttons to IE. I was using this for testing purposes, since it was faster to edit a button here than in my program. When you add a button you choose the executable to link it to. But if you add any arguments after it, IE will simply not be able to find the program. Even if that same command works when you type it from 'run'.
So, now my question is, since apperntly you can't have any arguments in the button, is it possible to detect what executable starts your program? For instance, detect if iexplore.exe started up my program?
I have a function designed to detect if the program is being run on Win7. However, when it is run on a Win7 machine, it says it is NOT a Win7 machine. [Code]
View 3 RepliesIs there a way to detect a Chinese character in a string which is build like this:
dim test as string = "letters 中國的"
Now I want to substring only the Chinese characters. But my code is database driven, so I can't substring it, because the length is always different. So is there a way I can split the string, from the moment I detect a Chinese character?
How to make program to detect mouse click and run vb script for action?
View 4 RepliesI am linking VB.2008 with a software called R.
Different people may install R in different directories or different versions.e.g. My R dir is C:Program FilesRR-2.9.0
How can I let VB automatically detect it and return the directory path to me?
Let's say I have only Notepad.exe running. No other items are on my taskbar except "Untitled - Notepad". How do I tell VB that i want it to find notepad and for example, dock itself to the left hand side of the notepad window?
View 3 Replies