ActionX added to multiple widgets. How to determine which widget triggered the action

[dv8]

Hi,
I have an actionX defined in my MainWindow and I have added this action to the context menu of a few treewidgets.
In the MainWindow :: on_actionX_triggered() slot, how can I figure out which treewidget triggered the action?
I've tried the following with not much luck:

void MainWindow::on_actionX_triggered()
    {
       qDebug()<<sender();  //outputs: QAction(0xe957dd8) 
       qDebug()<<sender()->parent(); //outputs: MainWindow(0x28fdfc, name = "MainWindow")
    }

void MainWindow::on_actionX_triggered()
    {
       qDebug()<<sender();  //outputs: QAction(0xe957dd8) 
       qDebug()<<sender()->parent(); //outputs: MainWindow(0x28fdfc, name = "MainWindow")
    }

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