The message in English : 

So I've done a custom task menu extension for my custom widget plugin for QtDesigner.

Here is my code (it is the constructor) : 

RollingButtonTaskMenuExt::RollingButtonTaskMenuExt(RollingButton *widget, QObject *) :
    myRollingButton(widget)
{
    editRollingButtonsAct = new QAction("Edit Rolling Buttons...", this);

    QObject::connect(editRollingButtonsAct, SIGNAL(triggered()), this, SLOT(launchEditRollingButtonsDialog()));
}

and here is what shows QtCreator when proposing a QAction signal : 

As you can see, it doesn't propose me the triggered signal of QAction.

In fact, it propose me all the member functions, attributes and other stuff of my class

RollingButtonTaskMenuExt, see below.

I hope this will help you fix it !!

And thanks you still for this beautiful Application !!!

I'm sorry for the bad english, this is not my native language.