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Andrew's CodeProject Screen Saver

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20 May 2002 1  
(Yet) another screen saver for the Code Project competition, with code in C# and (coming soon) some details about how certain aspects of the code involved work.

Introduction

Options panel

Yes folks, my secret is out! I've been developing a screen saver for the competition. "Huh?" I hear you all say. Well, I've been really busy of late, so didn't want to make a big fuss about it and then not deliver. Luckily, after several weeks of my C# screen saver sounding more like an F natural (groan), I managed to kick the little baby into touch in time to catch the voting form being put up.

Before I go any further, may I just give a big thanks to Chris, firstly for grabbing onto such a great idea for a CP competition, and secondly for building the final .exe on his machine to save me from those Beta 2 blues (oh, they just keep coming!).

Here's a rundown of the main features of the screensaver:

  • Downloads data in a separate thread so as not to block user interface
  • Detects if a user is offline
  • Will retry after five minutes should the connection to the server fail
  • Hair raising graphics
  • Customisable animation speed for users with slower machines etc.

Installation

Installation is as easy as pie:

  1. Copy CP Screensaver.scr into your Windows system folder.
  2. Copy the Images folder as a sub-folder of your Windows system folder.
  3. Select the CP Screensaver from your Display properties.

Done like a dinner!

How it works

Check back soon! Major areas to be covered will be:

  • Double buffering
  • Alpha blending (the fade effect)
  • State management
  • Multiple monitor support (presuming it actually works as I intended, see below).

Multiple Monitors

Unfortunately, I don't run a multi-monitor system, which means that, whilst I have added support for multiple monitors (not particularly efficient support, granted), I have been unable to test the saver on such a configuration. If you have been able to try the saver out with multiple monitors, I'd be interested to hear your successes/failures in the comments section at the bottom of the article.

To do

The screensaver certainly has some way to go in the future but I simply don't have time to do anything with it just yet; here is a list of stuff I plan to do, off the top of my head:

  • Subtly animated background with alpha blending on lights of lift platform
  • Caching of local data so if the user isn't connected they can still see a list of posts etc. from the last time the saver managed to connect.
  • Better handling of really high and really low resolutions (maybe utilise extra space somehow?)
  • Better multiple monitor support
  • Some bits of optimisations (there are a few loop invariants that need sorting out, but nothing that's too big of a problem)

Conclusion

Okay - so I hope you enjoy what is already here. The code isn't in the neatest of forms by any means because I used this project as a learn-C#-as-you go, so there may be the odd rough edge here and there, though on the whole it's pretty reasonable.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

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