GTK+, Text Widget & Modem

[Abe Waranowitz <eibu worldnet att net>]

Hello!

So far I have a simple modem terminal program working.  :-)  Being a
newbie, I've had a few problems...

Would anyone be kind enough to help me?  Thanks in advance!

1)  I'm using gdk_input_add() to monitor an opened canonical file
descriptor to /dev/ttyS1.  My routine simply adds the text grabbed here
to the text window.  But it always waits for a CR before it sends it.
How can I get a character by character screen update?  Should I use
GTK's idle functions and constantly read the file descriptor?

2)  When receiving a BIG file (>15k), the text window stops updating.
I have to hit CR to feed the data through.  Is this a buffer limitation
of the text widget?  How can I keep the text widget buffer a fixed
length like a standard terminal does?

3)  I'd like to use a line buffer for editing text before I send it.
What would be the best way to catch CR's and send only that line?

Thanks!

PS Anyone willing to comment on my code if I email it to you?  (12k)

-Abe Waranowitz