.exe exited with code -1073741819 (Using QFrame or Qwidget)

[Nick Scott]

Thanks. About that of declaring everything...I haven't declared those buttons or mostly anything else but the frame and it still works. Is that a "Bad Thing" that C++ still allows?

And where should I declare those things in C++? I declared the QFrame on my MainWindow, is that orthodox? The other declarations where should they be?

Thanks again.

[ChrisW67]

Show the code you are referring to. We cannot comment otherwise.

Is your UI built with Designer? If so, the UI file is compiled into equivalent C++ that includes relevant declarations and initialisations.