[VB6] BitBlt Not Inproving speed

[MeTTa@]

I am using bitblt on moving images, and frequently updated images. Flickering has been the cause of the problem, and still exists. Any furthure bitblt info. i may be missing? Thanks,
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Dan

[Fox]

Use Picture1.AutoRedraw = True to avoid flickering. After all drawing you need to Call Picture1.Refresh to show your work.

For more details see the several BitBlt / Tile engine tutorials on http://fox.yhoko.com

[Nove]

Also, another method for avoiding flickering is to use a backbuffer and then blitting the whole thing onto your (presumably) picturebox at once. With this on, you can turn the autoredraw off. I've heard this helps speed, but I could be totally and absolutely wrong on that. The only disadvantage is that if you're not constantly blitting you'll lose data when your picturebox isn't being shown.

[Fox]

Yes, that's faster, but you need a bunch of API knowledge to create the backbuffer and since he's asking basic questions... however, backbuffering is explained somewhere on my page, too