I'm trying to hook the keyboard in vb.net. Who can show me an example where you press button "F2" and a message box appear (MsgBox("You've pressed F2")). I need to hook the keyboard to make some action when DirectX application is running (I've Already tried with "registerhotkey" but do not works in dx app).
View 4 Replies
I want to hook keyboard with vb , so that whenever my application written in vb runs it will capture all the keys pressed from the keyboard and show all the keys being pressed in a textbox on window's form
View 1 RepliesI'm writing a code to use it in a keyboard spy program , and I'm using hook techneque with this , but the problem is that : if I ForExamle clicked on Shift and number 2 it doesn't give me At (@), I want it to give me at (@) ..
[Code]....
I´m using the SetWindowsHookEx API to hook the keyboard, and it works, but when I get vkCode from the structKBDLLHOOKSTRUCT it gives me way too high numbers instead of the ASCII byte I expect to receive. Also, the numberchanges each time I press the same key, so obviously something is wrong. I´m on Windows XP 32 bits, VB 2008 Express, Net. Framework 3.5 SP2. This is the relevant code (condensed, will
View 3 Repliesi am trying to create a keyboard hook so when i type out something my app will pop up, regardless of which app has focus at the time.i coded this already in a form which then opens up a second form but now i trying to make it so my module opens first, and then it will open up my secondary form.but the issue i am having is when the module loads and starts the keyhooking, i get an error on the following code saying"Overflow Exception was unhandled, Arthmetic operation resulted in an overflow".[code]
View 1 RepliesHow do I setup the mouse hook and keyboard hook?
View 1 RepliesI'm using a textbox to define a hotkey, and I need to make the textbox receive key events and prevent the form from receiving them.The reason it's a problem is because Tab (and probably other keys) is a valid key, but the form uses that as a shortcut, so the textbox never receives the keypress.
View 5 RepliesI'm attempting to intercept and interrupt mouse events. Lets say I wanted to disable the right mouse button down event, or even the mouse move event. I haven't been able to figure out the interrupting part.
I am using the (I assume pretty widely used) following code for Global Hooking of the mouse.
[Code]...
After many searches i end up using this class for global keyboard hooking. Link: Global Hook post [code]My app is performing operations that take some seconds to complete (ftp upload small files on interval), and during this time the hook lovks the keyboard. This i dont want of course..I cant jump to Async FtpWebRequest right now because it needs many changes, so i thought that the solution would be to make the hoook live in another thread.A proposal is to move my time - consuming operations (upload) to another thread.Upon doing this i am facing other problems. Because the time consuming task (upload) is in a timer i would have to rewrite a big portion in order to synchronize the file->save with the file->upload and i dont mind the app locking for 3-4 secs. what i do mind is to loose the kayboard for 3-4 secs.
View 2 Repliesi am trying to make a app that loads a keyboardhook from a module on startup,
but unless i load the keyhook from the form the app just closes immediately.
i uploaded the keyhook module, to test it just start a new project, add the module,
to test it loading from the form just put hookkeyboard in the form load,
but what im tyring to do is have the module load first, so set the start up object to sub main
what this is suppose to do right now is just send a msgbox on every keystroke, it works from the form load but fails when loading from module, unless i am always typing something.
I suspect I've overlooked something simple, but can't seem to figure out what... The following code should to block all key strokes that match those stored in alMasterList while in Excel. While the code effectively identifies if a key is pressed that matches a record in alMasterList, it does not block Excel from processing the keystroke. how I can prevent the key from passing to Excel?[code]...
View 3 RepliesTrying to convert my home app from vb6 to .net but have a problem. I am using the code in the tut by Paul Kimmel but it is returning Err.LastDllError = 126. I am using this code as posted on Win7 and VS2010. KeyboardHandle is retuning 0 but Im not sure which part of it is the problem. There is a lot of new stuff there for me.
CODE:
I have a program that uses low-level keyboard hooks, because it's a program that needs to be able to catch keystrokes, even when holding down capslock or what so ever.
Anyway, I figured out (by making a sample program running at the same time on purpose consuming 95% CPU by making an infinite loop with nothing in it) that low-level keyboard hooks stops working if the CPU usage is that high, and you do a lot of typing what so ever.
i am trying to make a app that loads a keyboardhook from a module on startup, but the problem i am having is unless i load the keyhook from the form, the app just closes immediately.
what im trying to accomplish in the end is the module will will check a 'user settings' file, depending on the settings it will show a form or load the keyhook. but this is where my problem is, if i set the keyboardhook to load from the sub main in the module the app will just close immediately unless (as far as i can tell) i am always typing something
if i set it to load from the form it stays open, ive tried creating a second module and loading the keyhook from their but it still closes i uploaded a copy of the keyhook module if anyone want to test it / check out the code... all it does right now is pop up a msgbox on every keystoke, for testing purposes,
My final goal is that striking F12 prints the date (through SendKeys) in the application/window having currently the focus (Word, Excel, Outlook, whatever). I have consequently implemented a globak keyboard hook (system-wide), which is running well (source code below).
My concern is that I would like to prevent any other local treatment based on F12. For instance, striking F12 under Microsotft Word prints the date is the open document (which is fine!) but also launches the "Save as..." dialog box, since F12 is a local shortcut/keybinding under Word. (Actually, the date is printed within a field of a the "Save as..." dialog box). I want to avoid this.
In other words, my aim is to improve the "hook" below so that striking F12 does what I want (which is already the case) but nothing more. That is to say, I would like that, except my treatment, the system "forgets" that F12 was striken.
' Option Strict On
Option Explicit On
' inspired by:
' http://jo0ls-dotnet-stuff.blogspot.com/2008/12/vbnet-global-keyboard-hook-to-detect.html
[code]....
I'm using a barcode reader which emulates a keyboard with swedish layout. I'm using RegisterRawInputDevices to create a lowlevel hook, catching windows messages and checking which device that sent the keyboard input. If it's the barcodereader, I would like to store the input. I receive the key input one by one in this class - how do I translate this into a string? If the character to be sent is an #, then the keys sent are Shift+3.
View 2 RepliesI am having some trouble getting some code to work. Here it is:
[Code]...
What I'm trying to do is have a timer stop ticking after another program is x'd out. (Not really 'closed', but whenever the X button has been clicked). I know it would be an If statement, but i'm not sure how i'd go about implementing it from there.
View 2 RepliesHow to filter inputs from keyboard in all windows applications while our written code is running and lives in notification area
it's like: user opens our application, now when typing in for example MS Word, when he types "s" it is said in our code to filter "s" and change it to "M" so if he press "s" on keyboard, "M" is typed in MS Word document.
i need Help to make Audio or Video Player With Using DirectX. how many Different b/w DirectX and Windows Media Player???
View 8 RepliesHow do I make Particle Effects and Effect Generation without Directx?
Effects I need
- Dust
- Fire
-Rain
-Thunder
- Fog
- Exsplosion
Types have their own color (cyan by default).Enter completes the auto-complete suggestion.
View 1 RepliesI am attempting to send the PrintScreen key, obviously, which ought to work no matter the window it is focused on. How can I make this trigger the printscreen action like it normally would? This is in VB.net. I have googled this, and couldn't find any results that worked.
View 1 RepliesHow can i make a button change action at each click?[code]...
View 7 Repliesa datacontext defined in a module(domain services ado.net ria)a page having add/delete methods whenever any method is executed, it is found that all the previous actions (NEW RECORD ADDITION and DELETION OF RECORDS) are carried out before the new action is carried out normally
this behaviour is not prominent but "when using break points and inspecting the values of the variables and table object to be added to context, it is clear that all the previous actions take place again. even when the datacotext. savechanges is called, even after that still all actions carried out on the datacontext repeat themseleves, when any new action is to be carried out
this is my first time making an application so I would like to make a Login form in VB. I haven't gotten into any problems so far but my question to you are the following1) Is it possible for me to make an event/action that will allow it to work with the script that is php? IE: Application has a button that will scan all files in /public_html for viruses, when the button is clicked, it will send the event to cPanel and make it scan all files.2) Once the user has connected and all information has been verified make another window show and the new application will be the new window.Another question I have isRight now I'm using WHMCS(url..) for my billing system they have an intergtation code that I use for my web page and it goes like this
<form method="post" action="http://www.orionconn.com/clients/dologin.php?goto=clientarea"> Email Address: <input type="text" name="username" size="50"><br> Password: <input type="password" name="password" size="20"><br> <input type="submit" value="Login"> </form>
I want to make an button that runs an action with the frequency from an number input in Visual Basic .NET . How do I do it? Could someone point me out the syntax of such an action?and all that I want to do is use an number from "NumericUpDown" to give a button how many times the action the button has to do it.
View 2 RepliesI'm trying to create a custom keyboard for my accounting firm. I have all the buttons and button events sorted out.How can I make it so that when buttons a pressed, the text is input into where the cursor is? Currently i put the cursor for instance in an excel cell, then click the key on the virtual keyboard and nothing is inputted into the cell, i assume because it selects the keyboard window when i click the button. For some keys I'm also simply using:SendKeys.Send("q") for example.
View 11 RepliesHow can I simulate a keyboard button click.For example how can I simulate the button 8 and 9 in another program outside my project form?
View 5 RepliesSo recently my Netbook keyboard stopped working, I got this new one. That would not be a problem if it was not for the missing [FN] key. My computer has several shortcuts, like FN + F6 = Turns screen off.
I cant seem to figure out how to bind these shortcuts to buttons in Visual Basic so I can just hit the button and turn the screen off that way, I've only used VB to make small simple fun stuff.
