I don't see anything in there about serialization...but here's a thread which
shows some examples and says "don't do it" referring to pass by reference.
https://stackoverflow.com/questions/8455887/stack-object-qt-signal-and-parameter-as-reference
Mike
On Thursday, January 24, 2019, 5:22:36 PM CST, Bill Somerville
<g4...@classdesign.com> wrote:
On 24/01/2019 23:07, Black Michael via wsjt-devel wrote:
> And where does this serialization take place? Are you saying it's a
> default condition of Qt to serialize across event boundaries?
>
> de Mike W9MDB
>
Mike,
you need to read up on the Qt signal/slot mechanism and how queued
signals are processed:
http://doc.qt.io/qt-5/signalsandslots.html
The serialization is done by the Qt meta-type system. Since the Qt
meta-type system uses run-time refection it can determine if the
receiver of a signal is running in another thread, in which case the
connection is made by creating an event on the target thread event queue
which includes serialized copies of the signal arguments. Anyway, not
relevant here as the compiler resolves same thread non-queued signal to
slot connections as function calls by some C++ template magic and the
moc pre-compiler tool that augments QObject classes.
73
Bill
G4WJS.
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