I tried several ways to use grey-out buttons but there is a bug or
something that is preventing me. The only way I found is
multi-threading or simply leaving the main thread to wait for the
backend to finish its job until it becomes available to the user.
Multi-threading can allow the user to click the same button several
times in a very short time creating as several concurrent threads
attempting to do the same thing. I tried to prevent this by counting
the number of thread objects created but there is a bug that is
preventing the created object to decrement the variable when their
destructor is called. So, I am sort of, stuck. :(

The only way that does not allow multiple similar threads is to allow
the GUI to become momentarily unresponsive.


Edward

On 31/08/2015, Rainer Weikusat <rainerweikusat@???> wrote:
> "tilt!" <tilt@???> writes:
>
>> Hi,
>>
>> been thinking about this for a while:
>>
>> It actually is correct that the frontend becomes irrepsonsive
>> when the backend does a re-connect or re-scan.
>>
>> When a re-connect or re-scan is performed, the old information
>> presented in the frontend is outdated, and the user should not
>> click around on it anyway.
>
> It is unknown whether or not the information is outdated until the
> results of the scan have been received and it is also unknown if the
> results of the scan still reflect anything real by the time they're
> received.
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