signals/slot functions not automatically generated in the .cpp or .h file?

[ChrisW67]

No, the receiver of the signal should a be a slot that creates and shows the dialog: you had one called actionTest() in your main window class. The dialog object doesn't exist until you create it.

Your connect() calls are broken and should be generating a compiler error or runtime warning. The arguments to the connect() are:

• A pointer to the sender QObject
• the SIGNAL() being sent
• A pointer to the receiving object
• the SLOT() receiving the signals when sent

So, with the slot in your main window class renamed doStuff() to highlight the distinction from the actionTest QAction:

connect(ui->actionTest, SIGNAL(triggered()), this, SLOT(doStuff()));

connect(ui->actionTest, SIGNAL(triggered()), this, SLOT(doStuff()));

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is closer to the mark.

[joebats72]

It works! I think I have a better handle on this now that I see how it works. Thanks very much for your help.

Joe