There is the following code:

There is the following code:

I installed Qt through aqt (in my country you can’t set Qt). When I run this code i get an error:

I have code in QT creator and the following line creates memory leak:

I’ve been trying to make an algorithmic trading backtester and it ran with no errors. My only problem is that it doesn’t render any of the chart and widgets which I programmed into the mainwindow files. It only shows a white blank screen. Keep note, I included all the necessary libraries in mainwindow.h.

I made a custom widget TabButton to group together some buttons I want to have change the ui based on the objectName of the button that was clicked.
header file: