Re: Seeking advice and information

[zentara <zzmiloschxx gmail com>]

On Tue, 5 Jul 2011 17:38:49 +0100
Duncan Ferguson <duncan_j_ferguson yahoo co uk> wrote:

> Hiya all,
>
> I am the author of ClusterSSH, a cluster admin tool.  In essence a terminal window is opened to a number of 
> remote machines and a console window - anything typed into the console is replicated to all the terminal 
> windows.
>
> It works with some rather horrible hacks and I am considering moving away from Tk to Gtk2 and would like to 
> know if I can simplify how the replication is done.
>
> At the moment, to get the replication done, i have these hoops to jump through
>
> At program start
> - start up a terminal window for each ssh connection and set 'allowSendEvents' to true
> - run a piece of perl code to get the window ID before exec'ing ssh in the window with the correct params 
> to connect to the remote host
> - grab the window ID of each of the windows and store it in the main program
>
> When text is typed into the console
> - grab the Tk event
> - best attempts at converting the Tk event keypress event into an X window event
> - send the X window event to each stored window ID
>
> The problems I have include the mess for grabbing the window ID and then having to convert the Tk key event 
> into an X event to send on, and this event is not easily or reliably converted
>
> I would much prefer to start up a number of Tk/Gtk2 windows with the terminal or shell embedded in them, 
> then when a key press event is received i just forward on to each window - then this avoids the X event 
> conversion which means the key pressed is actually the one put into each terminal and there isn't an issue 
> with the terminal window supporting allowSendEvents.
>
> Is this possible with Gtk2?  It certainly wasn't with Tk when i tried a similar approach there.  I have yet 
> to write any Gtk2 code but looking at the docs there doesn't seem to be too much work to convert from Tk to 
> Gtk2, but I'd certainly like to work out the potentially best way to code from the start instead of the many 
> dead-ends I had with Tk until I had a working solution.
>
> TIA
>
>  Duncs

You don't show any code, but any Tk script can be rewritten in Gtk2.

For some example code of how Gtk2 sockets work, see:

See http://perlmonks.org?node_id=662931  Simple threaded chat server

and  http://perlmonks.org?node_id=663428  Gtk2 Interactive Chat client

0m,
zentara