Detect An Unexpected Shutdown Within A Program And React To It In A VB Program?
Aug 14, 2009
I'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
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Jun 3, 2011
I made a little VB app to shutdown a laptop after it has been powered on for 2 1/2 hours, and giving the user a little over 8min warning that it is about to be shutdown. However I have nothing in place to stop the user from restarting the device once it is shutdown. What I would like to integrate in this, is a sort of memory where if the user doesn't wait at least 30 minutes, the shutdwon will re-iniate immediatly.
I included the code I did so far.
Public Class Form1
Private Declare Sub Sleep Lib "kernel32" (ByVal dwmilliseconds As Long)
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
[Code].....
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Mar 9, 2009
Alright im trying to make it where in Visual Basic 2008 you click on a box ether 10, 20, or 30. Then that tells a timer that the program needs to turn off in 10, 20, or 30 minutes. What I basically want it to do is, whenever the set amount time is when it goes off it shows form1(login form). I have prepared a picture can anyone supply me with some information on how to do this?
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May 21, 2010
I am making a remote shutdown program. Here is the code for the local program that will be checking to see if there is a shutdown:
Imports System.Net
Public Class Form1
Public WithEvents Downlad_Message As WebClient[code]....
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Jul 8, 2009
I have recently made a program but while it is running the pc is unable to shutdown, i have used the followin code, so the application minimizes while closing:
Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As FormClosingEventArgs) Handles Me.FormClosing
Me.Visible = False
e.Cancel = True
End Sub
Dont know if this is preventing it 0_O??? is there any alternative to this?
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Jul 8, 2009
I have recently made a program but while it is running the pc is unable to shutdown, i have used the followin code, so the application minimizes while closing:
Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As FormClosingEventArgs) Handles Me.FormClosing
Me.Visible = False
e.Cancel = True
End Sub
Dont know if this is preventing it 0_O??? is there any alternative to this?
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Jun 23, 2011
I am trying to play some WAVs within Media player and am confused at the order my code performs tasks in.
I need to use Windows Media player as my WAVs are 8 channel and just playing the WAV without using media player doesn't seem to support this.
I have a form with a button and a media player component on it
Her's my code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
AxWindowsMediaPlayer1.URL = ("C:ASOwl1.Wav")
[Code]....
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Dec 1, 2011
In my MDI Application code I have a form that launches a second form then hides itself until the spawned form closes. It works great unless I choose to close the application while the spawned form is still up.
The following is some example code.
Dim ChildForm as New frmTaskWindow With { .MDIParent = Me, .AddingNew = True }
ChildForm.Show
Me.Hide()
[Code].....
Me.Show() ' error occurs here because my form is already closed by the system. Is there a way to get around this without just an error catcher?
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Feb 10, 2009
I am designing a program that will show a reminder form when the computer is shutting down. (The reminder is to go outside and get the Bluetooth gps aerial.) I have tried using the formclosing event, (triggered by windows shutting down) to flash the form up on the screen using windowstate = normal. (At loading, the form windowstate = minimised). This did not halt windows shut down and the form was only on the screen for a fraction of a second before windows shut down. Can I trap windows shutdown until the form btn_Yes has been selected?
I think this msdn library article is talking about this. [URL]
I have looked at the enumprocess api, but this is quite a bit outside my current knowledge level. From what I have read, enumprocess would be suitable as we all run the same program on our laptops and I could check for the change of state of that program. Eg. �OK, program A is closing, the computer must be about to shutdown, so flash up the reminder form.�
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Jul 16, 2010
I've been making a program and for it I need to be able to detect shutdown. I've been told to do vbAppWindows etc. but there's a problem. For some reason it says "vbAppWindows is not declared" Does anyone have another way of doing it?Then I've used my.settings throughout the program and it has just started to not work. It wont save anymore.
[Code]...
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Feb 5, 2010
is there a way to detect if the user is shuting down?
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May 28, 2009
I have an application that starts from Sub Main and I need to run a sub when the system is about to shut down, restart or logoff so it can save it's settings. I found some code on google:
Imports Microsoft.Win32
Public Sub Main
AddHandler SystemEvents.SessionEnding, AddressOf OnShuttingdown
[code].....
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Jun 9, 2010
I want to detect when employees in our company are shutting down or restarting their computers. Is there a Windows API Call that will do that which I can hook onto? I found WindowsExitEX but it actually restarts the computer!
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Jun 20, 2010
I have an application that starts from Sub Main and I need to run a sub when the system is about to shut down, restart or logoff so it can save it's settings. I found some code on google:
Imports Microsoft.Win32
Public Sub Main
AddHandler SystemEvents.SessionEnding, AddressOf OnShuttingdown
[Code]....
But it doesn't seem to work, Windows shuts down yes but when I re-start the vm and run the app it opens with the old settings, not the ones that I changed before I shut down the vm. Anyone know of a way to do this or to fix the code above, I don't think my OnShuttingdown event is being handled.
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May 22, 2009
How do I make VB constantly check for keypresses?[code]...
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Jan 6, 2011
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..
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Dec 3, 2009
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]...
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Feb 14, 2010
How can my program detect if 2 nodes have the same name ?
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Sep 3, 2011
I 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.
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Aug 5, 2010
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Sep 29, 2009
How to handle the Network failure error message,and how to simulate it?
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Oct 29, 2011
In my program I need to make various word replacements but I don't want to replace the word if it's encapsulated[cod]e...
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May 31, 2010
How 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.
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Jun 13, 2009
I 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?
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May 15, 2009
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]
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Nov 30, 2011
Is 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?
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Oct 27, 2011
How to make program to detect mouse click and run vb script for action?
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Jul 14, 2009
I 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?
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Feb 10, 2010
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?
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Sep 16, 2009
How would I make my VB Program detect mouse clicks? I want the code in a timer. So if I turn the timer on, my program will detect a Mouse click and then do the rest of the Timer code. And after the timer code is done, I want it to do it again until the timer is closed. So if the timer is on, every time I click the mouse, (anywhere on screen) it will do the rest of timer code.
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