Solved

Application to move mouse

Posted on 2010-08-24
7
645 Views
Last Modified: 2012-06-22
I have a need to write an application in vb.net to move the mouse cursor every 4 minutes. The mouse movement can be minimal, but enough to keep screen saver from coming on. Does anyone have code to do this?
0
Comment
Question by:OB1Canobie
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
7 Comments
 
LVL 17

Expert Comment

by:Zhaolai
ID: 33512191
      Windows.Forms.Cursor.Position = New System.Drawing.Point(Windows.Forms.Cursor.Position.X + 1, Windows.Forms.Cursor.Position.Y + 1)


0
 
LVL 14

Expert Comment

by:systan
ID: 33512239
Disable the screen saver instead;
Imports Microsoft.Win32


'// This goes on form_load

'// Reads and sets the registry to disable screensaver from kicking
Dim regKey As RegistryKey
Dim regVal As String
regKey = Registry.CurrentUser.OpenSubKey("Control Panel\Desktop", True)
regVal = regKey.GetValue("ScreenSaveActive")
If regVal = 1 Then
regKey.SetValue("ScreenSaveActive", "0")
End If
regKey.Close()


'//This goes on app exit

'// Reads and sets the registry to re-enable screensaver
Dim regKey As RegistryKey
Dim regVal As String
regKey = Registry.CurrentUser.OpenSubKey("Control Panel\Desktop", True)
regVal = regKey.GetValue("ScreenSaveActive")
If regVal = 0 Then
regKey.SetValue("ScreenSaveActive", "1")
End If
regKey.Close()


OR Do like this:
Microsoft.Win32.RegistryKey rkScreenSaver = Microsoft.Win32.Registry.CurrentUser.OpenSubKey(@"  Control Panel\Desktop", true );

if ( (string)rkScreenSaver.GetValue( "ScreenSaveActive" ) == "1" )
{
rkScreenSaver.SetValue( "ScreenSaveActive", "0" );
rkScreenSaver.Close( );
}

Open in new window

0
 
LVL 29

Accepted Solution

by:
nffvrxqgrcfqvvc earned 500 total points
ID: 33512495
You don't need to move the mouse just inform the operating system your application is doing work with the display and it will reset the idle timer. You can use SetThreadExecutionState() with ES_CONTINUOUS | ES_DISPLAY_REQUIRED flags.
For example if your watching a DVD on your computer the application would call the above method, if they didn't the screen saver would interrupt the movie.
 

Imports System.Runtime.InteropServices

Public Class Form1
    Private Const ES_CONTINUOUS As Integer = &H80000000
    Private Const ES_DISPLAY_REQUIRED As Integer = &H2
    <DllImport("Kernel32.dll", SetLastError:=True, CharSet:=CharSet.Unicode)> _
    Private Shared Function SetThreadExecutionState(ByVal esFlags As Integer) As Integer
    End Function
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        SetThreadExecutionState(ES_CONTINUOUS Or ES_DISPLAY_REQUIRED)
    End Sub
End Class

Open in new window

0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 29

Expert Comment

by:nffvrxqgrcfqvvc
ID: 33512608
In the example above which I never mentioned you would periodically call SetThreadExecutionState() once every minute is fine. When your finished and you want it to go back to normal use SetThreadExecutionState(ES_CONTINUOUS).
0
 
LVL 86

Expert Comment

by:Mike Tomlinson
ID: 33512638
Thanks for posting that one egl1044.  Learned something new today!  =D
0
 
LVL 29

Expert Comment

by:nffvrxqgrcfqvvc
ID: 33521796
No problem Idle_Mind it's very useful for background processing.  I would like to also point out is that I have always called this routine periodically but it's appears only neccessary if you use only ES_CONTINUOUS flag.
If you use both flags ES_CONTINUOUS | ES_DISPLAY_REQUIRED it locks the Idle counter all together until you remove the ES_DISPLAY_REQUIRED bit flag. That means with the two flags you only need call it once but periodically if using only ES_CONTINUOUS.
When I started using this the documentation wasn't the same from a couple years ago but they seem to have improved it over time with much better descriptions.
0
 
LVL 29

Expert Comment

by:nffvrxqgrcfqvvc
ID: 33521944
Whoops the above should read
If you use SetThreadExecutionState without* ES_CONTINUOUS flag.
That means with the two flags you only need call it once but periodically if using SetThreadExecutionState without* ES_CONTINUOUS flag.
<Fills up more coffee>...
0

Featured Post

Creating Instructional Tutorials  

For Any Use & On Any Platform

Contextual Guidance at the moment of need helps your employees/users adopt software o& achieve even the most complex tasks instantly. Boost knowledge retention, software adoption & employee engagement with easy solution.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Visual Studio hangs on running project 6 84
Import a excel sheet in a grid 2 45
Datagridview column resizing 8 27
XML and Linq - reading fields in repeating nodes 3 24
Creating an analog clock UserControl seems fairly straight forward.  It is, after all, essentially just a circle with several lines in it!  Two common approaches for rendering an analog clock typically involve either manually calculating points with…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
In an interesting question (https://www.experts-exchange.com/questions/29008360/) here at Experts Exchange, a member asked how to split a single image into multiple images. The primary usage for this is to place many photographs on a flatbed scanner…
This video shows how to use Hyena, from SystemTools Software, to update 100 user accounts from an external text file. View in 1080p for best video quality.

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question