I am writing a function that should sound a beep every two seconds until the user either clicks the mouse or presses any key. The code I have written appears to work for the mouse click, but it ignores keystrokes:
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So I have some vb.net code, and I have a nested For loop inside a For loop, and then I have EXIT FOR statement, will it break out of one loop, or the whole chain?
View 2 Repliesi need to break out of an inner loop and i've been advised that exit loop is not the best way to do so. So i've thought of another way to do so, i want to get the value within the if statement, but it doesnt appear to be working properly.
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You see that i'm using Bavailable to try and break out of the loop to get the value pos in the instance of one of these if's conditions are returned true?
I'm trying to work out how to detect if the user has pressed an f key I have this so far:
Private Sub Form1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress
Label1.Text = e.KeyChar
End Sub
This detects when the user presses a character key and outputs it via Label1.text, but it doesnt work on all keys?
How would I go about in a loop if the user hits the escape key the program ends?
View 8 RepliesI have an assignment from school where the program is supposed to close when the user presses Alt X.
I have done this using Java but that was a long time ago and I can't remember how I did it. How do you do it in VB?[code]...
i want to make a message box appear when the user presses Alt k (then) Alt e (then) alt j . is this the correct code to use?:
Private Sub form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles txt3.KeyDown
Dim intcount As Integer = 0
If e.Alt And e.KeyCode.ToString = "k" Then
intcount = intcount + 1
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I made a tic tac toe game. and i was wondering how would code it so that when a user presses a button or when a user wins it makes a beep or some kind of music
View 6 Replieshow 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?
View 7 RepliesI want to create a registry entry when the user presses Alt F6 F6
Could someone give me an example of house to do this?
I'm playing with this code
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I'm trying to find out a way to detect when ever the user presses CTRL -ALT - DEL or Window + L to lock the PC.The code I'm using is
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
If (GetAsyncKeyState(17) AndAlso GetAsyncKeyState(18) AndAlso GetAsyncKeyState(46)) Or ((GetAsyncKeyState(91) Or GetAsyncKeyState(92)) AndAlso GetAsyncKeyState(76)) Then[code]....
However, as soon as the user presses CTRL-ALT-DEL the Windows Security Screen comes up and it is too fast for VB to detect that the keys have been pressed.I did a little reaserch on how to work around this issue and found that a GINA stub can be written which can delay the Windows Security Screen by some time say 2 secs which would be enough for VB to detect that the keys have been pressed.Also disabling Ctrl-Alt-Del through VB does not work because it is too fast for VB and I would like not to disable CTRL-ALT-DEL
Imports System
Imports System.Net
Imports System.IO
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I am trying to write the following application. A project has initial investment, yearly revenue and yearly expenses. The program should be able to take these data and calculate the break-even year, i.e. when the cumulative profits become 0. Also, it should have a listbox that would list the cumulative profit for 10 years. Refer to the example below. Now I know how to show it in the listbox but I am having trouble showing the break-even year. I know how to calculate it but how do you show it in years.
View 8 Repliesi am making my final year project in vb.net for data entry i want to make the project more user friendly i use code to change the control focus by pressing 'Enter'(ASCII 13).. and clear the content of current control by pressing 'Esc'(ASCII 27)... in my project one form contains at-least 300 of controls say(t1,t2,t3,t4...)
so in the keypress event of t1 i have writen
if asc(e.keychar)=13 then
t2.focus
elseif asc(e.keychar)=27 then
t1.text=nothing
end if
the code works fine but produce an alert beep when i press ENTER to change the active control...
I want to format my textboxes in such a way that when someone fills in the details in the textbox if they press enter button on the keybord the focus is given to the next textbox that they should fill in .I tried the code below that we used in vb6 but its not working.
View 3 RepliesI 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)
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?
View 1 Repliesim trying to make a program that only listens to a few keys that the user presses, and if one of them is pressed, it carries out a specified command.for example, right now,i found a keylogger that could carry out my command, but id rather use something else if possible. right now, i have a timer running this:
For i = 1 To 255
result = 0
result = GetAsyncKeyState(i)[code]....
Then, in the textbox1_textchanged, i search for like if textbox1.text.contains("M") or something.problem with this, is im pretty sure its a keylogger, and i dont want to have to have that. also, it does not work in vista.
Found a solution! (should have researched more throughly!)
Option Strict On
Imports System.Runtime.InteropServices[code].....
Inside a multiline Text Box I want it so that when a user presses Ctrl AND Enter then a new line is entered. But, if they press Enter on it's own, then it acts like the Accept button on the Form. I believe this is how Facebook does it.
Ctrl+Enter=NewLine Enter=Accept
how to send e-mail?I don't know what's the code for send e-mail. Can anyone teach me how to?I have a button on the Menu Tool. I want when user presses that button, it will directly link to the Microsoft Office to send e-mail to me.Please teach me.By the way, I also want to know how to load a text file. I want to make another button on the menu tool so when user presses it, a text file will pop up.
View 18 RepliesI'm currently trying to code a program which basically uses the stopwatch function to time the length of the users break. Basically when I work at home I want to allow my self 4% of my shift length in personal breaks.
So far I have
Public Class Form1
Dim elpsTmr As New Stopwatch
Dim ts As TimeSpan = elpsTmr.Elapsed
Private Sub txtshiftlength_TextChanged(ByVal sender _
As Object, ByVal e As System.EventArgs) Handles txtshiftlength.TextChanged
[Code] .....
The only fields I don't have working are hard ones. I'm trying to figure out how to subtract the length of the last break used from the minutes allowed to take and display it in a text box to display how many minutes you have left to take. And also to work out how many minutes have been used since the program has been opened or reset.
the goal i want to accomplish is when the user presses a button, "moneyamount" increases by a random number generated. the problem i am having is that after the action is finished the script does not seem to save the new value and always starts at zero. here is the script:
Private Sub button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles dojob1button.Click
Dim moneyamount As Integer = moneyamount + Int(Rnd() * 10)
moneylabel.Text = "$" & moneyamount
End Sub
I need a box to pop up, when a user presses "Close" It will then say "Are you sure you wish to close this program?"and give a Yes or No option. If Yes is pressed, it will close the application. If No is pressed, it will close the popup box and the program will remain running.
View 6 Repliesin my form i have 4 textboxes and i want all not to be empty while saving the data.I have put condition in save button,when user presses the save button to save data, to check all the textboxes not to be empty. My question is that, i want to focus to that particular textbox which is empty during saving the data.
For example: i have txt1,txt2,txt3,txt4 as textboxes in the form if txt1 is empty while saving, the focus should switch to txt1 rather user himself have to go there.
I have a ToolStripTextBox (the name of it is SearchBox) and I would like it when after the user types something and presses enter it takes them to a URL. I've got the URL part sorted out, but I need to know what goes afterI don't see any event in the intellisense popup for something when the user presses "enter."So, in other words, how do I perform an action after the user presses enter?
Private Sub ToolStripComboBox1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SearchBox.**?????**
Dim SearchString As String
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-new Dell laptop without a Break key.
-VB6 and VS2008 IDEs use Ctrl+Break to pause execution for debugging.
-I need a way to map another key combination to trigger a Ctrl+Break
My setup may make this easier or harder but to be clear I am running Kubuntu 9.10 (latest stable) and WinXP in a VirtualBox VM. Obviously all VB6/VS2008 dev is taking place in the virtual machine.So maybe it's possible to have the linux host send through Ctrl+Break based on a key mapping, or maybe it's possible to remap directly in WinXP. I'd settle for any solution as atm I need to use the XP On-Screen keyboard to send a Ctrl+Break.
I have created a for loop the validates a user account. however whenever i hit the button that starts he code it won't let me allow user input. I have checked a forums and other sites and its bugging me. i know its small but i don't know what i need to be doing to get out of the loop
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any way to stop a for loop untill i have user input, once the input is correct continue the for loop, is that possible at all?
View 4 RepliesI was knowing that For Each loop can only be applied to those classes that implement IEnumerable interface . But recently i accidentally wrote a code that is using For Each on my class's objects collection and my that class is not implementing IEnumerable interface .Below is the sample code that i am testing on :
Sub Main()
Dim personList() As Person = New Person(2) {}
personList(0) = New Person("s1", "s2")
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VB.NET 2008 windows app form.I have a groupbox with several checkboxes, comboboxes, and textboxes within it.With the help of StackOverFlow members, I've learned how to use the FOR/NEXT loop to find all checkboxes that are checked.[code]As you can see by the code sb.tostring will print every checked checkbox name on its own line.How do I associate the proper combobox.selecteditem, textbox.value, and checkbox name to print out on the same line.When I say proper...example; checkbox=pen, combobox=color, textbox=quantity.Let's say my other checkboxes are different items and the rest of the boxes are the same.
View 2 Replies