Unbelievable error!

[jacek]

When does Simulator print its line?

[Caius Aérobus]

When does Simulator print its line?

in slot SetPositions(), Print() method is basically a printf that adds the name of the class on the left.

[wysota]

So which slot is not called? SetPositions? Did you remember to register a meta-type for your custom argument types?

[Caius Aérobus]

So which slot is not called? SetPositions? Did you remember to register a meta-type for your custom argument types?

yes SetPositions(), which receives the emit PositionsHaveChanged() signal when it is emitted by mousePressEvent() but does not receive it when emitted by Clear2().

meta-type? euhhhh actually no but:
- I had in mind that this was related to QVariant class in order to make unions of a limited list of types...
- anyway it does not explain why it works for mousePressEvent() and not for Clear2() (it should either work or not work for both, shouldn't it?)

[high_flyer]

I can't see in your code a connect statement that connects to the mousePressEvent() slot.
Never mind I see now what you meant.

[Caius Aérobus]

I can't see in your code a connect statement that connects to the mousePressEvent() slot.
Never mind I see now what you meant.

The mousePressEvent() is "natively" connected to the mouse :-) through the QLabel class, so no need to connect it anymore.

[high_flyer]

I am not sure what do you mean... after all.
I think you might (if I am getting right what I see in your code and what you say) be confusing the mousePressEvent() *event handler* and the mousePressEvent() slot you have overridden in your QLabel subclass!

[wysota]

yes SetPositions(), which receives the emit PositionsHaveChanged() signal when it is emitted by mousePressEvent() but does not receive it when emitted by Clear2().

Are you sure the signal indeed gets emited? And don't ask me why shouldn't it be emitted. Just connect some other slot to it and find out.

[jacek]

in slot SetPositions(), Print() method is basically a printf that adds the name of the class on the left.

What happens if you place it in the first line of that slot?

[Caius Aérobus]

What happens if you place it in the first line of that slot?

but that slot has a single line:

void
Simulator::SetPositions(std::vector<std::vector<std::vector<double> > > positions)
{
  this->Print("%d %d %d (%lf,%lf)", positions.size(), positions[0].size(), positions[0][0].size(), positions[0][0][0], positions[0][0][1]);
}

void
Simulator::SetPositions(std::vector<std::vector<std::vector<double> > > positions)
{
  this->Print("%d %d %d (%lf,%lf)", positions.size(), positions[0].size(), positions[0][0].size(), positions[0][0][0], positions[0][0][1]);
}

To copy to clipboard, switch view to plain text mode