[Enhancement] Addition of "Application Name" concept

Type of Issue (Enhancement, Error, Bug, Question)

Enhancement

Operating System

Linux version GNOME Desktop

PySimpleGUI Port (tkinter, Qt, Wx, Web)

tkinter

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Versions

Python version (sg.sys.version)

3.6.2

PySimpleGUI Version (sg.__version__)

4.45.0.3

GUI Version (tkinter (sg.tclversion_detailed), PySide2, WxPython, Remi)

8.6.6

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Troubleshooting

These items may solve your problem. Please check those you've done by changing - [ ] to - [X]

• Searched main docs for your problem www.PySimpleGUI.org
• Looked for Demo Programs that are similar to your goal Demos.PySimpleGUI.org
• If not tkinter - looked for Demo Programs for specific port
• For non tkinter - Looked at readme for your specific port if not PySimpleGUI (Qt, WX, Remi)
• Run your program outside of your debugger (from a command line)
• Searched through Issues (open and closed) to see if already reported Issues.PySimpleGUI.org
• Tried using the PySimpleGUI.py file on GitHub. Your problem may have already been fixed but not released

Detailed Description

Some environments, GNOME is a specific example, have the concept of an "Application" that is used to group icons on the taskbar. This is different than the Window's title.

At the moment, the Window's title is being used as the application name. This was just added in version 4.45.0.3.

Enhancement is the addition of an Application name concept to PySimpleGUI in a more focused manner.

Will likely be both a global setting as well as a parameter to the Window class constructor so that each window is capable of being under a different Application Name if specifically requested. Popups will use the global setting.

Start with the Window class constructor and the existing global setting that currently uses the window title as the application name; also trace how popups obtain that value. Done means defining the application-name behavior for individual windows, providing the global fallback for popups, and confirming it works in the stated GNOME and tkinter context.