[Solved] How to make SendMessage unblocking?
You can’t make win32api.SendMessage() non-blocking because the underlying Windows function is blocking. Instead you can use win32api.PostMessage(), it has the same signature: import win32api, win32con print “start” win32api.PostMessage(win32con.HWND_BROADCAST, win32con.WM_SYSCOMMAND, win32con.SC_MONITORPOWER, 2) print “end” 3 solved How to make SendMessage unblocking?