I like to keep track of application progress - using MainWindow "status bar." .
No problem within MainWindow form , however,
in actual case

how do I use signal emitted by my "tab" widget class to activate slot / status bar in MainWindow.

I am currently processing the signals using "connect" but
it is limited to interact with "parent" class only.

I need to "cross-connect " "signal/slot" between the tab class and MainWindow class
I am lost using the real code - here is my pseudo code

connect ( tab class , SIGNAL tab class signal "finshed", MainWindow class , SLOT set "statusBar (message )

Help will be appreciated