WIndows 7 Desktop Refresh And Picture Screensaver?
Nov 9, 2011
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.
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.
Lets say i label "label1" , and 2 buttons named "button1" and "btnRefresh " [code]So , when user press the button 1 , the text will change. But what should i put inside btnRefresh to reload the forms ? and display the default label.text = "Form Load" ???
I have a logon script which changes the desktop brackground picture in the registry. The only problem is this change isn't applied until the user logs off and on again. I currently use a small program which uses SHChangeNotify(&H8000000, &H1000, 0, 0) but this will not refresh the wallpaper. I was also hoping this would refresh the Taskbar because I change a registry setting which removes a toolbar.
Anyone knows the code to REFRESH the WINDOW DESKTOP by clicking a button from a form?iCzZz...^^Private Sub Button1_Click(ByVal senderSystem.Object, System.EventArgs)les Refrh.Click
I need to refresh the whole screen/desktop.I am painting a rectangle and need to have it clean and not leaving marks when it is dragged around.There were a few claimed APIs that could do it. And then some others which were more specific to other languages.
I have written a small application that will allow the user to use DreamScenes on there desktop in Windows XP but i can't get the screen to refresh to reflect the desktop changes. The refresh routine i have used will only work once....This program is part of an application i am writing to allow users to customize/modify the windows xp source.Here is my code:
Imports System.Collections.ObjectModel Public Class Form1 Dim DSNAME As String
I'm new to .net programming, but I do have some experience programming. I've used a picture box to make a custom button. It works on the main form, but when I open a dialog form with the same image the transparent areas shows the desktop and not the dialog. Thishappened for images with an alpha channel and also images that used the transparency key. I tried it with a winform instead and the images with an alpha channel worked fine, but the transparency keyed images showed the screen. All
I have a splash screen and want to test the loading bar. The % of loading are in 11 stages (0-100% in 10% intervals) and I have 11 different images. What i'm trying to do is set my picturebox.image = to the resource image and then wait 1 second then set picturebox.image to the next resource image. What i was doing is on the SplashScreen.Show method [Code]. What happens is that the picture box doesn't refresh with the image until the last image has been loaded from the procedure and the end of making the thread sleep completes. (this worked fine in VS2005). How can I make it load up the image, redraw the picturebox and then make the thread sleep for 1 second in VS2008.
I was trying experimenting with things and I was stuck in a way about how to refresh a webpage from a windows form. E.g.: a start button on the form refreshes the page [URL] and stop button stops the process.
I have a Main form (a window form) in VB.NET which has a Combo Box to display a list of countries. A sub form activated from a "Button" on the Main form allows users to add Countries to their list. But After Adding a new entry the Combo Box on the Main form does not show the update (while it is still open). I have to exit the main form and relaunch it to see the update.
The populate function in shown below. I call this method after adding new countries but still; not good. I have used Invalidate function of combo box but of no use as well.
Public Sub PopulateCountry() Dim rsLocal As New ADODB.Recordset Try
I need help on how to launch the normal windows desktop. I have a TCP Client/Server application where the client should start before any other application starts. To do this, I replaced explorer.exe with my application file path in the registry. What I want to do is the client minimizes when it receives a command from the server, and start windows as normal.
launch a Modeless Dialog I am used in me.showintaskbar property to remove application from taskmanager.but it removes the form(application)it still refreshes.How to stop the form refresh.
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 trying to overcome a problem I am having with remote desktop.Basically I have 2 machines running in different locations. I use remote desktop to access one of them (the "Remote Machine") from the other.("My PC")The "Remote Machine" is performing automated tasks that require the screen to be active, not the user login screen.
When I do so the Remote Machine logs off and presents the normal windows login screen.When I am finished reviewing the remote machine I log off and then I need to log back into the "remote" machine. It has no monitior but I can log in by pressing the enter key which sends a keypress to log into the user account( there is only one). In fact I do this the other way around. I press the enter key on the "Remote Machine" and this logs the user back in - terminating the remote session on "MyPC".
The problem is I have to physically go to the Remote Machine to press this enter key.This is a hassle - One solution is to remotely re-boot the remote pc but the lead time involved is too great.I am unable to fix this problem by tweaking setting or registry hacks so I guess the solution must be to cause the remote user to log back in programatically.I am an experienced VB user but I have never worked outside the windows environment. Ideally I would like to programmtically send a keystroke "{enter}" to the login screen but this doesn't work.
