wx_stay_focused.py

import wx
from wx.core import EVT_TIMER 

from Cocoa import NSApp, NSApplication

# Adapted from https://discuss.wxpython.org/t/macos-window-opens-in-the-background-and-does-not-receive-focus/36763/2
class Frame(wx.Frame):
    def __init__(self, *args, **kw):
        super().__init__(*args, **kw)
        print(f"{self.IsFocusable()=}")
        self.SetFocus()
        print(f"{self.HasFocus()=}")

        # def evt_kill_focus(_):
        #     print(f"lost focus {self.HasFocus()=}")
        # self.Bind(wx.EVT_KILL_FOCUS, evt_kill_focus)

        # def evt_get_focus(_):
        #     print(f"got focus {self.HasFocus()=}")
        # self.Bind(wx.EVT_SET_FOCUS, evt_get_focus)
        # self.Centre()


def go_foreground():
    NSApplication.sharedApplication()
    NSApp().activateIgnoringOtherApps_(True)

if __name__ == "__main__":
    app = wx.App(False)
    form = Frame(None, title="Stays focused!", size=(400, 300))
    form.Show()

    go_foreground()

    handler = wx.EvtHandler()
    handler.Bind(EVT_TIMER, lambda evt: go_foreground())

    timer = wx.Timer(handler)
    timer.Start(100)

    app.MainLoop()

Tried NSWindow.level = NSFloatingWindowLevel but didn't work. Need to read more up on Cocoa.