I have my timer code displaying the time correctly on my program, and I want to trigger an event to happen at a 6:31. How do I get the program to preform a button click or trigger the event that the button handles. The program works when I run and press the button, but I want it to happen automatically at 6.31 without me pressing it. Thanks!
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
Timer1.Enabled = True
End Sub
Private Sub Timer1_Tick(sender As System.Object, e As System.EventArgs) Handles Timer1.Tick
Label1.Text = Date.Now.ToString("hh:mm:ss")
End Sub
In your Tick event:
Dim now As DateTime = DateTime.Now
If (18 = now.Hour) AndAlso (31 = now.Minute) Then
' Change 18 to 6 is you want AM instead of PM
' Do something here
End If
This is the naive version. Your question is lacking in details so I did not elaborate on the code.
At a minimum you may need to ensure that once the "event" happens it can't happen again.
Related
I was having problems running my application when (God Mode) was running... I found online, that it seems to be a common bug. The fix is to put Application.DoEvents() Within the loop, which I did... But now everytime I turn God Mode on, The CheckBoxes bug out, when they're clicked they activate... The program doesn't stop responding but there needs to be two clicks for the program to visually show that it's active:
Full Code:
Private Sub CheckBox1_CheckedChanged(sender As Object, e As EventArgs) Handles CheckBox1.CheckedChanged
If CheckBox1.Checked = True Then
Do
Application.DoEvents()
WriteDMAInteger("Dishonored", GetModuleHandle("Dishonored", "Dishonored.exe") + &H100C810, {&H344}, 70, 1, 4)
Loop Until CheckBox1.Checked = False
End If
End Sub
Any ideas or solutions?
As the comments indicate, don't use Application.DoEvents() It's more trouble than it's worth. Instead, use a timer.
Drag a Timer control onto your form from the Toolbox. Set its Interval property to something suitable (like 100 ms). Add the Tick event and call your WriteDMAInteger method in that event. In your check box's changed event simply enable or disable the timer:
Private Sub CheckBox1_CheckedChanged(sender As Object, e As EventArgs) Handles CheckBox1.CheckedChanged
'Enables the time if the checkbox is checked
Timer1.Enabled = CheckBox1.Checked
End Sub
Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
WriteDMAInteger("Dishonored", GetModuleHandle("Dishonored", "Dishonored.exe") + &H100C810, {&H344}, 70, 1, 4)
End Sub
With the timer's interval set to 100 ms, the WriteDMAInteger method will be called 10 times per second. You can experiment with a smaller value than 100 for the interval, but the limit will be about 50ms.
Is there some kind of update feature like in C# for Visual Studio 2012 in vb.net? (so that it will continuously check to see if an if statement is fulfilled)
Try something like this:
Dim iClicks As Integer = 0
Private Sub Label1_Click(sender As Object, e As EventArgs) Handles Label1.Click
iClicks += 1
Label1.Text = iClicks.ToString()
If iClicks = 1000 Then
MessageBox.Show("1000 reached!")
End If
End Sub
It's better to have a integer counter than checking the string value and performing conversion each time. As you can see, the code checks the click counter each time you click the label.
If you want to check the value periodically, add a Timer and perform the check in its event:
Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
If iClicks = 1000 Then
MessageBox.Show("1000 reached!")
End If
End Sub
But consider the need to do this, because maybe it's not necessary and will decrease the performance comparing it with the other way.
There is probably a better way of doing this, but what I've done when I need a constant "update" function, is just use a Timer, then handle the Ticks.
Easiest way of implementing it is to go to the form designer, in the Toolbox, under Components, drag a timer onto the form. Double-click it to add a handle for its Tick event.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Timer1.Start()
End Sub
Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
If WhateverYoureLookingFor = True
'Do stuff
End If
End Sub
This is obviously VB, but easy to convert to C#.
I am trying to play and stop the timer at a certain time that i typed in a textbox because i want to play an audio after the time is done.
Can you guys help me out?
Here is my code:
Private Sub Simulate_Click(sender As Object, e As EventArgs) Handles Simulate.Click
AxWindowsMediaPlayer1.Show()
AxWindowsMediaPlayer1.Ctlcontrols.play()
AxWindowsMediaPlayer1.Ctlcontrols.fastForward()
Simulate.Enabled = False
If TextBox1.Text = 1 Then
My.Computer.Audio.Play(My.Resources._1, AudioPlayMode.Background)
ElseIf TextBox1.Text = 2 Then
My.Computer.Audio.Play(My.Resources._2, AudioPlayMode.Background)
If i type say for example 2 seconds, it would take two seconds before the audio file plays.
Drop a timer control on the form and set it to the time interval where you would like it to stop at. In the timer's tick event disable the timer so that it doesn't fire again, and play your sound.
The timer will fire off X milliseconds after you set it's Enabled property to true.
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
tmrAlarm.Interval = TimeSpan.FromSeconds(2).TotalMilliseconds
tmrAlarm.Enabled = True
End Sub
Private Sub tmrAlarm_Tick(sender As Object, e As EventArgs) Handles tmrAlarm.Tick
tmrAlarm.Enabled = False
MsgBox("Beep!")
End Sub
In this example a message box will pop up 2 seconds after pressing the button.
It requires a Timer control to be placed on the form named tmrAlarm.
This method will keep your application responsive without having to worry about complex multi-threading issues.
If you're not concerned about application responsiveness a simple System.Threading.Thread.Sleep(timeInSeconds * 1000) will do the trick. This will lock up the application for the sleep time.
If responsiveness is an issue you will need to have the playing of audio occur as a response to a new event you will create. Then you would need to start a new thread that sleeps and after sleep raises your new event.
You have to add a timer called "Timer1" for this to work. If textbox contains number "1" then time is set to 1000 milliseconds and timer is started, when 1000ms is up, then it will start playing the sound and then stop the timer.
Public Class Form1
Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs) Handles TextBox1.TextChanged
If TextBox1.Text.Contains("1") Then
Timer1.Interval = ("1000")
Timer1.Start()
ElseIf TextBox1.Text.Contains("2") Then
Timer1.Interval = ("2000")
Timer1.Start()
End If
End Sub
Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
Timer1.Stop()
My.Computer.Audio.Play(My.Resources._1, AudioPlayMode.Background)
End Sub
End Class
Does anyone have an idea how to handle a mouse click and hold event in VB.NET?
Suppose I want to click and hold in a button and do some stuff behind the code like change the button BackColor or close a window faster( just like when you click in the ms office 2013 file menu then use a left-arrow to close that menu).
Hope you know what I mean
Thank you
You could create a timer that is defined globally that begins when MouseDown is called, then ends on Mouse Up. You can then set a condition on how many milliseconds need to pass before you deem it a 'long click'. See example code below:
Public Class Form1
Dim WithEvents timer As New Timer
Dim milliseconds As Integer
Private Sub Form1_MouseDown(sender As Object, e As MouseEventArgs) Handles MyBase.MouseDown
timer.Start()
End Sub
Private Sub Form1_MouseUp(sender As Object, e As MouseEventArgs) Handles MyBase.MouseUp
timer.Stop()
Label1.Text = "Button held down for: " & milliseconds & " milliseconds"
If milliseconds >= 10 then 'Mouse has been down for one second
DoSomething()
End If
End Sub
Private Sub EggTimer_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles timer.Tick
milliseconds += 1
End Sub
End Class
MouseDown is what you are looking for
my issue is i need to wait 3-4 seconds after a button has been pressed before i can check for it, here is my code under button1_click:
While Not File.Exists(LastCap)
Application.DoEvents()
MsgBox("testtestetstets")
End While
PictureBox1.Load(LastCap)
I think i'm doing something really simple wrong, i'm not the best at VB as i'm just learning so any explaining would be great!
~Thanks
If the reason you are needing to wait is for the file to be created try using a FileSystemWatcher and respond to the Created and Changed Events that way you are responding to an event rather than arbitrarily waiting a select period of time.
Something like:
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
FileSystemWatcher1.Path = 'Your Path Here
FileSystemWatcher1.EnableRaisingEvents = True
'Do what you need to todo to initiate the file creation
End Sub
Private Sub FileSystemWatcher1_Created(sender As Object, e As System.IO.FileSystemEventArgs) Handles FileSystemWatcher1.Created, FileSystemWatcher1.Changed
If e.Name = LastCap Then
If (System.IO.File.Exists(e.FullPath)) Then
FileSystemWatcher1.EnableRaisingEvents = False
PictureBox1.Load(e.FullPath)
End If
End If
End Sub
You can use, although not recommended:
Threading.Thread.Sleep(3000) 'ms
This will wait 3 seconds, but also block everything else on the same thread. If you run this in the form your user-interface will not response until the wait is over.
just as a side note: use MessageBox.Show("My message") instead of MsgBox (latter is from old VB).
If you want your form to continue to function while the 3 seconds pass, you can add a Timer control instead, with some code like this:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
' set the timer
Timer1.Interval = 3000 'ms
Timer1.Start()
End Sub
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Timer1.Stop()
'add delayed code here
'...
'...
MessageBox.Show("Delayed message...")
End Sub
Drag and drop a Timer control from your toolbox to your form. It's not visible at runtime
or better yet making a wait function using stop watch, this wont halt the process in the same thread like thread sleep
' Loops for a specificied period of time (milliseconds)
Private Sub wait(ByVal interval As Integer)
Dim sw As New Stopwatch
sw.Start()
Do While sw.ElapsedMilliseconds < interval
' Allows UI to remain responsive
Application.DoEvents()
Loop
sw.Stop()
End Sub
usage
wait(3000)
for 3 sec delay
You could use this
Public Sub BeLazy()
For i = 1 To 30
Threading.Thread.Sleep(100)
Application.DoEvents()
Next
End Sub
It will delay for 3 seconds.