You can give n number of widgets list using TOOLITEMS global variable. TOOLITEMS is list of tuple[Widget name, Tooltip text, Icon png complete path with name, Callback function].

Type of Issue Bug - PySimpleGUI or matplotlib? Clicking "Plot" with Matplotlib >= 3.5.0 will make the plot window grow. With matplotlib==3.4.3, the plot window stays the same size. Not sure if it's a ...