Solved

Starting Screen Saver

Posted on 1998-08-30
2
146 Views
Last Modified: 2010-04-30
Hi,
I am using VB5 and want to start the users screen saver
under _windows 98_ (the command should work under 95/NT too, but 98 is primary concern).  I had code before that started it under 95/NT, but under 98 it seems to put the computer in 'standby' mode or something.  I am sure it is just a case of know the correct API function and the value(s) to pass it.

Thanks,
oreg
0
Comment
Question by:oreg
2 Comments
 
LVL 1

Accepted Solution

by:
jf26028 earned 90 total points
ID: 1431942
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long

Const WM_SYSCOMMAND = &H112&
Const SC_SCREENSAVE = &HF140&


To start the screen saver, use the following code:

Dim result As Long
result = SendMessage(Form1.hWnd, WM_SYSCOMMAND, SC_SCREENSAVE,0&)      
0
 

Author Comment

by:oreg
ID: 1431943
Hi,

I am SOOO sorry it took so long to grade this...It was not working for me right away...I found out my problem was that I forgot a 'byval' in the last argument to sendmessage...sheesh, who would have thought that simply changing byval would have two very different, but safe (standby vs screen saver).

Thanks!
0

Featured Post

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Best way to parse out a json string in VB6? 10 162
passing parameter in sql procedure 9 61
Advice in Xamarin 21 78
Send outlook email from VBS Script 2 28
Introduction In a recent article (http://www.experts-exchange.com/A_7811-A-Better-Concatenate-Function.html) for the Excel community, I showed an improved version of the Excel Concatenate() function.  While writing that article I realized that no o…
Have you ever wanted to restrict the users input in a textbox to numbers, and while doing that make sure that they can't 'cheat' by pasting in non-numeric text? Of course you can do that with code you write yourself but it's tedious and error-prone …
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…

813 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

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now