Hi again, I am making a tile-based rpg using directdraw and using 640x480 res, and 24-bit color depth. About 4 out of 5 computers work fine, but a couple computers i tried it on just open up a full black screen for a split second then just exit back to windows... Has anyone come across this? I am using the dx6 sdk that came with TOTWGPG''s book... could this be the problem?

Could be the 24bpp. Some video cards don''t support it. Try changing it to 16bpp on the computers that don''t work.

Check this: Control Panel->Display Properties-Settings
On the color combo box check if 24bit appears. On some cards (like mine) only 32bit is supported (Color options are: 16 Colors, 256 Colors, High Color (16 bit), True Color (32 bit))

Ouch! Poisler, you beat me by less than a minute.

I think you guys are right... the ones that didn''t work don''t have the 24-bit option in display settings. So what is the best way to go so that it runs on almost all computers and still looks nice? Should I make it a 16-bit app or 32-bit app or have some sort of resolution caps detection and set it accourdingly? Any other tips would be great. Thanks

quote: Original post by Michalson
Ouch! Poisler, you beat me by less than a minute.

Hehe, early bird catches the worm...

Anyway, I would suggest detecting the resolution and working from there. But you can also create some nice looking games in 16bpp.