FreeBASIC Screensaver Kit

jofers · Post by **jofers** » Sep 11, 2005 6:31

OK, there seems to be a lot of interest in screensavers lately, so I made a "helper" kit so people who don't want to learn the WinAPI don't have to use "dirty screensavers" that just sniff out the command line and use GFXLib.

http://www.betterwebber.com/stuff/FB_ScreenSaverKit.zip

Just unzip, and include this at the top of your program:

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#include "FB_ScreenSaverKit.bas"
StartScreenSaver

Pset (x, y), colr
'...

Then you can just start using Pset, Line, etc. It sets up a NULL GFXLib driver, and copies that to a window 60 times a second. If the screensaver is in preview mode, it stretches it so it fits in that little box. If you include a dialog resource called "FB_SCRNSAVE_ABOUT" it will display that and close it when the "IDOK" button is pressed, or show a messagebox if a resource isn't included.

Packaged is the kit, and a conversion of Mambazo's "Doodle" demo. Notice how the preview box and settings button work, and how there's no code related to that stuff in the actual program, FB_ScreenSaverKit.bas takes care of it all.

If you want/need a real settings box, then I might make a function where if you include a different dialog name it makes a modal dialog and lets you hook the message loop, and it doesn't save much effort unless I made a mechanism to save registry keys, which I don't feel like doing because I like registry undiddled.

Plasma · Post by **Plasma** » Sep 11, 2005 6:55

Very cool.

rdc · Post by **rdc** » Sep 11, 2005 21:54

Wow, that is great. Thanks!

jupiter3888 · Post by **jupiter3888** » Sep 12, 2005 11:23

wow. hahaha im going to have sooo much fun with this, i just know it!

Antoni · Post by **Antoni** » Sep 12, 2005 17:10

And it's too the first NULL GFXLIB example I have seen.It seems lillo forgot to write its's own....

Jofers: A feature you forgot to tell us. Startscreensaver copies the present screen to the GFXLIB buffer, so you don't need to do that if the saver "plays" with the present screen. If the screensaver does a diferent thing, just start erasing te buffer...

Great!!

EDITED: The only drawback. Windows API POINT interferes with GFXLIB's POINT, so i can't do a screen melt....

jofers · Post by **jofers** » Sep 12, 2005 20:42

Yes, but you can still use the function from the runtime library:

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#define Point2(x, y) fb_GfxPoint(0, CSng(x), CSng(y))

anonymous1337 · Post by **anonymous1337** » Sep 12, 2005 21:05

Thanks! Man this will help a lot! Maybe...I can post one of my screensavers later for you guys?

Post by **Imortis** » Sep 13, 2005 14:38

Could Someone host this on FileAnchor? I would love to have it, but at my college most zip downloads are blocked. For some reson, FileAnchor isn't...

dumbledore · Post by **dumbledore** » Sep 13, 2005 20:29

why don't you do it yourself? you can "upload" to fileanchor from the net as well as your computer, then download the stuff it just got for you ;)

Post by **Imortis** » Sep 14, 2005 16:01

Thanks for the tip dumbledore! I didn't know you could do that! Fileanchor now rocks even more then I thought it did before.

relsoft · Post by **relsoft** » Sep 15, 2005 5:10

Shockingly awesome!

mambazo · Post by **mambazo** » Sep 15, 2005 18:03

wow is this the growth of my seed in Tips & Tricks?!?! *grin*

excellant stuff here thanks a million!

relsoft · Post by **relsoft** » Sep 19, 2005 6:25

Hey Joe, does it work with SDL + OpenGL?

jofers · Post by **jofers** » Sep 19, 2005 12:29

Not really since it uses GDI. Can SDL/OpenGL write to ScreenPtr?

Also, if you wanted to help me with that, be my guest.

relsoft · Post by **relsoft** » Sep 21, 2005 11:04

I don't know about GL writing to a GDI context. But I was thinking of a GL kit or something.