VB2010 displaying jpegs from serial input.

[Syd Rumpo]

I have a communications system which sends data to a VB2010 program over
USB. I can readily decode the data and display various parameters.

This is used to demonstrate the comms system, and what I would like to
do is send jpeg images to my VB program and display them in a
PictureBox. I can strip out all the comms overhead and write the jpeg
to a byte array easily, but how can I then display this?

I could write a file to disk and read this into the PictureBox, but I
want this to go fairly quickly - the jpegs form a slowish video stream.

I'd use two byte arrays, and display one while loading the other, then
swap over. But how do I make a picture from a byte array containing a
jpeg image?

I suspect the answer is trivial, but I'm no VB guru.

Cheers

[GS]

Post by Syd Rumpo
I have a communications system which sends data to a VB2010 program
over USB. I can readily decode the data and display various
parameters.
This is used to demonstrate the comms system, and what I would like
to do is send jpeg images to my VB program and display them in a
PictureBox. I can strip out all the comms overhead and write the
jpeg to a byte array easily, but how can I then display this?
I could write a file to disk and read this into the PictureBox, but I
want this to go fairly quickly - the jpegs form a slowish video stream.
I'd use two byte arrays, and display one while loading the other,
then swap over. But how do I make a picture from a byte array
containing a jpeg image?
I suspect the answer is trivial, but I'm no VB guru.
Cheers

VB2010 is .Net; -this forum is for Classic VB6 and earlier<g>
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[Auric__]

Post by Syd Rumpo
I have a communications system which sends data to a VB2010 program over
USB. I can readily decode the data and display various parameters.
This is used to demonstrate the comms system, and what I would like to
do is send jpeg images to my VB program and display them in a
PictureBox. I can strip out all the comms overhead and write the jpeg
to a byte array easily, but how can I then display this?
I could write a file to disk and read this into the PictureBox, but I
want this to go fairly quickly - the jpegs form a slowish video stream.
I'd use two byte arrays, and display one while loading the other, then
swap over. But how do I make a picture from a byte array containing a
jpeg image?
I suspect the answer is trivial, but I'm no VB guru.

How fast does the jpeg update? Depending on that, hard drive speed, network
speed, and the phase of the moon, it might be acceptable to go the temp file
route.