How To Disable Screensaver, Sleep, Lock, Hybernate On Windows 7 Or Using .net 2010
Jun 4, 2012
I don't have any idea if it is possible and how can I code it.I have created an application that needs to run on a non-administrator account on windows 7. It won't run if the PC goes sleep/ locked/ hybernate/ on-screensaver. So, I want to disable them programmatically using vb.net 2010. Can any one help me?
By the way, I already tried to edit the power settings of the PC so it will never sleep/ hybernate, etc. But unfortunately, it keeps on sleeping after few hours.
My app is running in the tray and I want it to give a reminder to the user its there when they resume from a hibernation, sleep, or from being locked. I know how to handle the popup, but I cant find out anywhere how to detect that 'wake' status from those power saving modes.
Currently I'm using System.Threading.Thread.Sleep(5000) to let my app pause/sleep for some time. This works great but I can't open my app anymore when it's sleeping and it uses about 25% of my CPU. I guess there must be a better way to do this. I also tried using a timer but that didn't work out to well for me..
To start off with, I will say that I have tried ENDLESS attempts to surpress/capture/stop the actual sleep keystroke.
The code cannot require administrator privilege's. .
I tried:
Private Overrides Sub ProcessCmdKey, and Return true when the sleep key is pressed - did not disable sleep key LowLevelKeyboard - One that can disable the windows logo key - did not disable sleep key And many other keyhandling events, etc.
The code cannot create registry keys because that requires admin privilege's.
I am using VB.net in VS2008.I wrote a screensaver that cycles through pictures. When the screensaver exits it sets the desktop background to the last picture loaded using API call SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, sFilePath, SPIF_UPDATEINIFILE Or SPIF_SENDWININICHANGE).The desktop wallpaper refreshes for WinXP and Vista but not Win7.In Win7, if I run the screensaver as an EXE then the desktop background changes when the program ends. If I run it as a screensaver I need click on the desktop and press F5 before the desktop shows the new desktop background (or click and drag with the mouse to show pieces of the new desktop background).I have tried to add delays and even force a refresh by using SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, Nothing, Nothing) but with no success.
When it is run, screesavers and screenoff is prevented somehow.. I have narrowed it down to this code.
[code...]
The above code is what makes it possible for my application to active two forms when only one is activated.. But it is somehow this code that prevents my screensavers and power settings from working.. Do you have any idea how to change the code so it doesnt prevent my screensavers and power settings?
OK, so, I made a program that locks the computer with a password, to help you protect data from other people. It's quite simple, you open the program, it shows up in full screen, "To access this computer please type in the password"....etc.
BUT, I want it to have a "Guard". To make it act like a screen saver does. That's my plan: So, you typed in the password, and close the program. And then, if you didn't move your mouse, or press a key, or you're not watching a movie, for more than 6 minutes, I want it to automatically launch the program. Until now, I've just put in Form2.Show in the Form1's (which is the password-protect program) FormClosing class. I also made the Form2 on Full Screen, and it's opacity to 0%. That's where you will move your mouse. I made all the code until now, but I need code for making it act like a screen saver.
I have a DataGridView that based on certain conditions certain columns or rows or cells need to be locked/disabled but the data in the columns or rows or cells needs to bvisibleNow let me define what I mean by lock/disable; the user cannot click on any cell that islocked/disabled, if the use is using the arrow keys the selected cell cannot move to a locked/disabled cell.So this means that setting the cell as read only will not work, the user can still place the cursor on that cell.
Private Sub DataGridView1_SelectionChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DataGridView1.SelectionChanged If DataGridView1.CurrentCell.ColumnIndex = 0 Or DataGridView1.CurrentCell.RowIndex = 0 Then
I am writing a program to show pictures and other related things. my screensaver interrupts my program when it is running. i will like to know if there is any way to suppress the screensaver whilst my program apart from manually turning off the screensaver
How can i wake up pc from sleep? i found this project [URL] in c# but i can not convert it, i tried but it has error, can someone conver this code in vb.net?
stop windows from going into sleep mode stop windows from going into sleep mode
This is part of this thread:
stop windows from going into sleep mode[URL]
This is the reason that the user gave: I have Windows 7, and if I don't keep continuously using my computer, it goes to sleep. Now I have to restart my computer, put in the password and start again.
When you hit the REPORT link you were told that reporting a post is for SPAM, harrasement and other violations of the Bytes guidelines.
It not a way to draw attention to your problem because you are impatient.
Next time you do it I'll just delete the threat for not following the rules after you have been warned.
I would like to find out what the current windows sleep mode setting is i.e. Is it switched on and what is the timer period. My preferences (in order) are: .NET Managed Code API Read Registry Value
i'm trying to Handle the Micosoft.Win32.SessionSwitch Event, so when Windows is going to be locked by the user, i will simply write a line to the console.When it's going to be unlocked, the same.
Here's the code:
Sub Main() AddHandler Microsoft.Win32.SystemEvents.SessionSwitch, _ SystemEvents_Sessionswitch() Console.ReadLine()
After the 7th line I need a pause until a submit button pops up on the screen. The submit button is hidden until the getelementbyid.focus is run. I cant use webbrowser_documentcompleted because the submit only unhides itself, and I cant use Sleep() because that just stalls the whole block.
Once again I'm migrating to vb.net finally from vb6 and trying to get some of my old code to work. I was using the following code to let something finish running and then after the time set go to the next.
[code]...
Sleep just stops the code period but this actually runs the piece before it and then continues. I put it all into vb.net and it threw out an error with DoEvents.
How could i re create the slide transition in the windows 8 lock screen. I want my form1 to quickly slide up while revealing form2(Both forms are borderless and in maximized state) (like when the lock screen slides up while revealing the logon screen in windows 8)
I want to show "the caps lock is on balloon" warning message like Windows in login form in passward text box. but I have no idea using window's api function. but i tried using tooltip but it can't work like window. I am working on Visual Studio 2010.
I'm trying to enable the screensaver from within my application I found this code on the internet:
Declare Auto Function SendMessage Lib "user32.dll" (ByVal hWnd As IntPtr, ByVal Msg As UInt32, ByVal wParam As UInt32, ByVal lParam As UInt32) As Int32 Const WM_SYSCOMMAND As UInt32 = &h212
[Code]....
But it's giving me an error "Expression expected" on the three Const lines right at the & character.
I am sure the screensaver wasn't meant to be used in this manner, but I have created an interactive screensaver for the company I work for which acts as a checkout station for calibrated measurement equipment.Part of this process is printing out a sticker using an SII SLP Label printer which is attached to the computer with the checkout station. Printing with the printer works just fine over the network from another computer (not running the program as a screensaver), but for some reason I am getting a -16 error (I believe that is "Unknown Error") when the program as a screensaver uses the local SLP printer. The only possible reason I can think for this happening is that screensavers aren't allowed to access printers. Is there some way to give the screensaver permission to use the printer? Currently the screensaver is able to access files on the network file share (such as the equipment database) just fine. If I were to create a TCP/IP server that acts as a proxy or go-between for the printer so that all the screensaver does is connect to localhost and tells the server to print would that work?
My problem is that when i am using a form with maximize property who covers all the screen including start menu and status bar but whenever windows key is pressed start menu and status bar showed. so tell me how can i disable left and right windows key of keyboard.
