Hello everyone,
I have a QMainWindow subclass called `text_editor` with a function
`save` which looks as follows:
```cpp
void text_editor::save() {
_textbox->document()->setModified(false);
_textbox->setFocus();
emit saved();
}
```
I now connect to that slot in another class like this:
```cpp
_information_editor = new text_editor{this};
connect(
_information_editor,
&text_editor::saved,
this,
[=]() {
std::cout << "hello\n";
}
);
```
I have verified that the signal is emitted, in fact, the method
generated by the moc:
```cpp
// SIGNAL 0
void text_editor::saved()
{
QMetaObject::activate(this, &staticMetaObject, 0, nullptr);
}
```
is definitely called (verified with gdb and some other debugging
shenenigans).
In addition, the connection object returned by `connect` is valid, as
verified by its implicit bool-cast operator.
However, "hello" is never printed. I suspected this could be because
`text_editor` inherits from `QMainWindow` and could have a different
thread affinity, so I tried the following things:
1. Move the editor to the same thread as the object which establishes
the connection
2. Use a QueuedConnection
3. Connect to the slot from WITHIN the text editor itself, making sure
that we are 100% on the same slot
and none of them worked.
Just for clarification, the print of "hello" is only an example, so even
if there was some issue with that, I would have detected it, the actual
code is of course different.
I'm really out of luck here, and would appreciate any help.
Sincerely,
Folling
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