Re: Simultaneous qt and wxt terms (was Re: Proposal: Saving graphs from Qt and wxt terminals)

[Daniel J S. <dan...@ie...>]

On 10/25/2014 01:05 PM, Bastian Märkisch wrote:
> Am 25.10.2014 um 19:46 schrieb Daniel J Sebald:
>> On 10/25/2014 03:40 AM, Daniel J Sebald wrote:
>>
>>> I removed the interlock test and it creates quite a mess with invalid
>>> events, seg faults in bad library calls, to scratch the surface.
>>>
>>> Investigating a bit, I think the problem lies in the fact wxt terminal
>>> is not in its own process.
>>
>> It's too much work to do this in an afternoon or so. Having looked at
>> the code, though, I'd say some things get simplified when WXT is run in
>> its own process as an outboard plotter. All these sorts of conditions
>>
>> #if defined(WXT_MONOTHREADED) || defined(_Windows)
>>
>> go away.
>>
>> Dan
>
> Btw. Timothée had been working on this years ago, see patch #380
> https://sourceforge.net/p/gnuplot/patches/380

Thanks.  That could save a ton on the initial tedious work of putting 
bulk of the code in its own program.


> Also, the qt and wxt terminals run nicely in the same session on
> Windows. It just took some effort to make qt->waitforinput() work.
>
> Since waitforinput() is a terminal routine it typically only handles
> events from the library the current terminal uses. If we want to use
> multiple libraries in the same process, we need to replace/extend that
> mechanism.

I think once the active terminal is changed, mousing and keyboard input 
is disabled for others.


>  From my experience with the (outboard) qt terminal, I sincerely doubt
> that moving the wxt terminal to its own process will significantly
> simplify the source.

It won't simplify the source, but it will get rid of those "corner 
cases".  As you point out, Windows works fine for both terminals...and 
that's why the things like:

#if defined(WXT_MONOTHREADED) || defined(_Windows)

are in the code.  But if WXT is running in its own thread all the 
Windows items should still work fine as well as linux.  That's the idea 
anyway.

Just to confirm, does the Qt terminal work in both Linux and Windows?

Dan