Changing width of QWidget with mouse

Question

I have two QWidgets inside a QHBoxLayout. I want to be able to change the width of the left QWidget by clicking on its right side and moving mouse (such as the Qt Editor's projects browser).

Answer 1

You can do exactly what you want by using QSplitter. You can find a complete example here: https://stackoverflow.com/a/38433287/4297146