On Sep 7, 2017, at 1:53 AM, William G Hatch wrote:
> On Tue, Sep 05, 2017 at 05:07:41PM -0400, James wrote:
>> I'm trying out Rackterm for the purpose of running commands put together
>> from a GUI but it looks like the thread is crashing as soon as I try to
>> create a terminal canvas. Is it something I am not doing right or is there
>> a bug? I am able to run rackterm/xterm without error and that contains very
>> similar code.
>
>
>>
>> Here's my code:
>>
>> #lang racket
>>
>> (require racket/gui
>> rackterm/private/terminal-canvas
>> )
>>
>> (define frame (new frame% [label "Example"]
>> (width 800)
>> (height 800)
>> ))
>>
>> (send frame show #t)
>>
>> (define my-term (new terminal-canvas%
>> [parent frame]
>> [font-size 14]
>> [font-name "Courier"]
>> [term-var "rackterm"]
>> [command-and-args '("ls -lh")]
>> [set-title-callback (lambda (title) (send frame set-label
>> title))]
>> [horiz-margin 2]
>> [vert-margin 2]
>> ))
>>
>>
>> The terminal window appears and then immediately closes with the following
>> error message:
>>
>> "The evaluation thread is no longer running, so no evaluation can take place
>> until the next execution.
>>
>> Exited successfully."
>>
>
> Well, this is caused by my not having actually cleaned up the code for it to
> be used in any sort of general way, rather than specifically only by my one
> xterm (hence terminal canvas is still in the private directory). But there
> is a `handle-subproc-ended` method that I put a TODO in to make it
> configurable, but currently just kills the canvas, because usually you want
> an xterm to close when the shell inside it exits. But you could make a
> subclass that overrides that method, or even better, improve my bad code and
> send a pull request. Or eventually I'll fix things up and release them
> properly.
>
> Also '("ls -lh") should be '("ls" "-lh").
Thanks. I got it to work by creating a subclass. Unfortunately, it will take
more work to make it more useful than MrLib Terminal since what I really want
is something which will support running commands interactively created by GUI
elements. At this point, I can only run one command and then create a new
terminal object in order to run an additional command. I will probably get
back to this later.
James
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