VS 2008 Way Can Capture The Key-presses But Prevent Key-press From Going To Any Other App?
Jun 30, 2010
I have a code which registers keypresses even if it's running in the background.Is there a way I can capture the keypresses, but prevent the keypress from going to any other app? Microsoft Word and my program is running.if I press to 'Activate' button the program starts capturing all keypresses. This makes it impossible to type into Word, or any program for that matter as long as my program is activated.Once my prgram is deactivated I can type in any program normally.
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Dec 14, 2010
I'm trying to capture two key presses in my VB.net application, for this example CTRL + B, the code below doesn't work but it does for single keys. I have tried setting keypreview as true but this has no effect. [Code]
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Aug 3, 2009
I need to write a piece of code that will decide weather the charactor of pressed key sould be entered to the textbox or not.
I've experimented on events:
KeyPress()KeyDown()PreviewKeyDOwn()
But non of them helped me to acheive my goal. is there any other events that i shoudl be aware of?
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Nov 13, 2011
Im Building a auction application and i need to catch the exceptions i.e if two people press the bid button at the same time i need to capture that exception and figure out who was has the highest bidder out of the pair of them then show the relevant message, my question is how can i achieve the above?
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May 29, 2010
I need to determine if a set of keys have been pressed in succession. For example, if I'm looking for this combination: Up, Up, Left, Space, then any key that inteferes with the order would start it over.
I tried doing a basic test to see if it would be as straight forward as I was hoping:
VB.NET
Private Sub Form1_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
If e.KeyCode = Keys.Up Then
[Code]....
For some reason, it doesn't let me continue the sequence. I put a MessageBox on the second "Up" and it triggered when I pressed it just once.
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Feb 26, 2010
so my friend and i are working on a project together, he is working on PHP, and im working on visual basic, and we both know what we need to do, but we cant figure out how to use his PHP code and use it in visual basic. What we're doing right now is trying to make a program to send an email to me or him when somebody presses a button. so, how would i use his PHP to send an email from my VB based app? sorry if this is in the wrong place, i wasn't quite sure which to put it in...
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May 13, 2010
I am using GDI to draw an image of a character on the screen and I would like to animate the character when the user presses an arrow key. Here is my character
character code
character.DrawImage(My.Resources.Right_Standing, 12, 340, 40, 36)
I am using this method
method
Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
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Oct 1, 2011
i'd like to know how to make an event happen when user presses a key ... let's say space or whichever...and the other thing - how to display a folder on my hard disk ("E:Music") in a ListView box in my program?
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Oct 20, 2009
how can i set it so when i enter text into textbox1 and textbox2 i can press the enter key rather than have to press the actual button ?
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Jun 20, 2009
how can i make it so if i press f1 a msgbox will pop up?
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Jul 6, 2009
I have some code that executes in several keydown procedures.Trouble is, how do I keep these procedures from running?
Private Sub Form1_KeyUp1(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyUp
If e.KeyCode = Keys.D1 Then
PictureBox1.Visible = False
[code]....
When I'm elsewhere in the program (it has different "modes" when operating), I DON'T want lowbit0 true.How do I ignore these subs in code? Also -- from what I've seen, you can only use the key events from within a procedure?Like If KEYX.event = true then do this?
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Apr 21, 2009
I have a simple application launcher, where each button has a picture on it.
Is there a way to set an accelerator key, in VB (as you can't do it any other way) for each button.
Also, can you set it so that you don't have to press alt first?
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Aug 30, 2010
I want to make a button when i press it it put text into Textbox1
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Apr 5, 2009
I am trying to make a program that outputs a series of key presses into another window. I have been trying to do this with the SendKeys but have found that it it presses the key too quickly for the other application to be affected enough to cause much output. I need a way to globally press the key down and key it up over a period of time. If I know the code for pressing a key down and up globally I'll be able to link it up with a timer and work from there assuming the key codes are the same as SendKeys.
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Apr 27, 2012
how can I capture an event like a button click or timer event, if I created the controls at run-time?
Ex: Dim a As Button
Dim b As Timer
I want to capture the click event of the button "a" and the timer event of the timer "b".
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Apr 30, 2009
Ok, I have an Ambir Signature Pad, and i just want to get the signature as an image (lol just).Well, I was wondering if there is a way to 'connect' to the device via usb and treat it (the pencil) as a mouse and get the coord's when they drag.
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Apr 5, 2009
So I am hacking together an app which listens to traffic using SharpPcap library, it reconstructs the packets from sessions using the code from TpcRcon.
Listening and reconstructing part work on their own . What I want is on each packet arrival main window gets an event so it can display the packet , and when session is reconstructed display a complete packet (I am interested in HTTP ones) . -That is where it breaks with weird symptoms: for example right now it does not stop on invoking stop listening method - the sharppcap library function hangs there forever waiting on this line of code : m_pcapThreadEvent.WaitOne();//wait for the 'stopped' signal from thread
I also had it not working and crashing in sharppcap function because I had omitted one parameter in form delegate- which makes no sense, because form delegate does not deal with packet capture at all and only reacts on "New Packet" event from my "Listener" class (which is only there to notify main form)
My app starts as module main instancing class "Listener". MainForm has it
registered as friend with event and handles even "New Packet"
Main Form:
Private Sub uiListenStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btListenStart.Click
aLogger.AddMessage("Started Listening")
[Code]....
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Apr 22, 2010
well i want all my textbox's event- keypress should be called by using Delegate
The Function i need to preform on them is only Numeric
My code
Public Delegate Function mydelegate() As Char
Public Function key(ByVal e As System.Windows.Forms.KeyPressEventArgs) As Char
Dim ch As Char = e.KeyChar
[Code]....
The problem comes when i use this code it surely gonna restrict me entering the alpha characters but i m facing problem is i can enter only a single digit number
i.e when i try to enter 45 it's simpley don't expect it only value which it is accepting is [1],[2] what i want it should accept the value's in two digits,three digits and so on..
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Oct 4, 2009
I have an xbox 360 guitar hero x-plorer controller and I was wondering if anyone here knows how to handle the event of a gamepad button press in the xna framework.
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Oct 21, 2010
I am trying to make it so that when the enter key is pressed, a process or action is executed, and then the program waits for further prompting - For example the enter key is pressed again.
I have used the following code in visual basic 2008 for a windows form:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.Visible = True
[Code]....
Where I want to press enter a number of times and have different text displayed each time. Clearly when I run the sub above, pressing enter makes all the text appear at once. How can I make it so that one sentence or paragraph is displayed at a time?
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Jan 22, 2010
i'm making launchers for the game MuOnline with vb 08 and i want to ask how to make when players are playing and they press F11 to minimize the game and f12 to restore the game back to fullscreen or if its window mode to restore it to window mode
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Feb 28, 2012
I am creating a small program that can access google.com and code to press the search button automatically...
This is my code so far:
Dim myWebRequest As HttpWebRequest = CType(WebRequest.Create(www.google.com), HttpWebRequest)
myWebRequest.UserAgent = GenUser
myWebRequest.Referer = GenRef
I am wanting to send a command to just click the Search button, the search button on Google is named: btnK
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Mar 10, 2009
I was wondering how to forbid to the user to press the combination of Alt+F4? or atleast if user presses Alt then MsgBox("...") so that the combination ruins...?
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Jan 24, 2010
I'm doing program that I can capture a part of the screen. Heres code, I don't know why it's not working.
[code]...
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Jan 7, 2010
I have a picturebox with controls on it. I wanna save it as a pic with controls. I have seen a getimageofcontrol() func. on vbforums earlier that does exactly this. But I am not able to find it now...
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Sep 15, 2010
After a long while I started a project in VB.Net. I am making a security cam application for my own room. What I have done so far is capturing image from webcam (15 fps) to a imagebox and copying a still image from that imagebox to another in an intervall I have decided. Afterwards my code saves the image with a date and time as jpg. The code for capturing image I have found in this forum (iCam). My problem is (by the way I am an amateur programmer ) that the first imagebox (for realtime image capture) is not being showed (I dont want to see it). But if it is not active then all still images (saved as jpg) are all black. I think it is a drawing issue. I think imagebox is not being drawn (because it is not visible (actually the form is not visible)) and that is why still images are black. But I really don't know how to fix it? The class for capturing still images is very useful but only works with an imagebox.
(I really tried to understand the code. Especially the function, which copies a still image from 15 fps webcam output to a imagebox (which is used to save image as jpg file). But there are objects like: IntPtr, Hdc (getHdc, releaseHdc) and BitBlt. I really don't know anything about those objects.)
Code of iCam:
Option Explicit On
Option Strict On
Public Class iCam
#Region "Api/constants"
[CODE]...
I get realtime images with: iCam.initcam(me.picturebox1.handle.int32) and copy with: picturebox2.image= iCam.copyimage(picturebox1,New RectangleF(0, 0, Me.picturebox1.Width, Me.picturebox1.Height))
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Jun 24, 2011
i just want ask you guys how to capture images from 2 different webcams.is there any dll out there that i can use?
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Sep 22, 2010
We have a client server application that 650 users are using everyday. Lately they have started complaining about over all slow responses and slowdowns in normal application usage like searching, reporting etc.We are using .NET Framework 3.5 and .NET Remoting is the technology we have used for client connection to the server side. We can't remove that and use something else due to legacy application maintenance. We are using SQL 2008 R2 x64 on a very good server.We have gone though the basic steps of making sure that all the SQL side is ok everything is well tuned but we need to convenience the client that it is not the application but the database that needs to be regularly maintained by a DBA in order for it to run smooth due to the nature of the application making tons of changes and inserts in the database everyday.
Anyways I need to write some sort of module that can plugin into the .NET Remoting calls so it can log the normal usage of different methods on the server like;* How many times a remoting method is called* What params a remoting method is called with* How much time it takes to execute each remoting callIs there anything available in .NET Framework that can help me? I read something about .NET Remoting Sync but not too sure if that is what I need to use? If any can shed any light on the subject or nudge me in a right direction with some sample code, that would be great.
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Jun 21, 2010
I'm developing an application and it needs a facility to take photo of the customer using the webcam.
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Jun 15, 2009
I had an idea for an MSN (Windows Live Messenger) "addin" today, which I thought was a great project for me to try.Basically, I want people to be able to type LaTeX code in their MSN conversations, and my application parses the LaTeX code and displays (probably in a separate window, but if possible inside the conversion window) the math formula.
I am probably not going to get it to send the image in the conversion window, but I will be happy if I can get it to display in a separate window.Basically, all I need for this to work is to capture the text that a user receives over MSN. If it contains a certain token (like "$$ ... $$") then I can try to parse the text between the dollar signs, and if it is valid LaTeX I can show an image of the result in a separate window.
So, I probably don't even need an actual MSN plugin / addin, if I can just get the received text by some other means.
1. some basic Windows Live Messenger add-in programming examples / tutorials? I've never done this before, and have no clue how to do it... VB/C# are both fine.
2. how to retrieve the text that you receive using either an addin, or some sort of windows API ?
So I'm looking for either an addin, or, if possible, a completely separate application that basically monitors each and every window and sees if it's from MSN, and then retrieves the received text...
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