Help Getting and Setting Bitmap Info From VB

[A_G_Barnett]

How do I retrieve a bitmap info structure from VFW via VB ?

I've created types for BITMAPINFOHEADER, RGBQUAD and BITMAPINFO - but still
get type errors?

Any help (Ray!) would be deeply appreciated!

Gary

[Jim Deutch]

You have to get the BITMAPINFOHEADER first, to find out which flavor of
BITMAPINFO you then need to get, depending on the color depth (biBitCount).

Jim Deutch

"A_G_Barnett" <a_g_barnett@hotmail.com> wrote in message
news:3a8572fe@news.devx.com...
> How do I retrieve a bitmap info structure from VFW via VB ?
>
> I've created types for BITMAPINFOHEADER, RGBQUAD and BITMAPINFO - but
still
> get type errors?
>
> Any help (Ray!) would be deeply appreciated!
>
> Gary
>
>
>

[Ray Mercer]

"Jim Deutch" <103134.3516@compuserve.com> wrote in message
news:3a88159f@news.devx.com...
> You have to get the BITMAPINFOHEADER first, to find out which flavor of
> BITMAPINFO you then need to get, depending on the color depth (biBitCount).

> > How do I retrieve a bitmap info structure from VFW via VB ?

Jim is right. You have to first figure out what format the hardware is going to
give you. Use capGetVideoFormat for that. Then you need to create a UDT that
can contain that format. I have personally only ever used RGB and MJPEG formats
from VB since it is so much hassle setting up the UDTs.

To keep it simple at first, I recommend setting your hardware to capture RGB
uncompressed 24bit frames. Then you won't have to worry about a palette or
compression codecs.

HTH,
Ray