added #+y::Monitor_toggleNotifyIconOverflowWindow()

src/Config.ahk

@@ -461,6 +461,7 @@ Config_saveSession(original, target)
 #+Space::Monitor_toggleBar()
 #Space::Monitor_toggleTaskBar()
 #y::Bar_toggleCommandGui()
+#+y::Monitor_toggleNotifyIconOverflowWindow()
 
 ;; Administration
 #^e::Run, edit %Config_filePath%

src/Monitor.ahk

@@ -293,6 +293,25 @@ Monitor_toggleBar()
   Manager_winActivate(Bar_aWndId)
 }
 
+Monitor_toggleNotifyIconOverflowWindow()
+{
+  Static wndId
+
+  If Not WinExist("ahk_class NotifyIconOverflowWindow")
+  {
+    WinGet, wndId, ID, A
+    DetectHiddenWindows, On
+    WinShow, ahk_class NotifyIconOverflowWindow
+    WinActivate, ahk_class NotifyIconOverflowWindow
+    DetectHiddenWindows, Off
+  }
+  Else
+  {
+    WinHide, ahk_class NotifyIconOverflowWindow
+    WinActivate, ahk_id %wndId%
+  }
+}
+
 Monitor_toggleTaskBar()
 {
   Local m

src/doc/changes.t2t

@@ -15,6 +15,8 @@
 
 (+) Session auto-save and restore. Layout and Window information is
     stored periodically so that it may be recovered after a restart.
+(+) A hotkey and corresponding function for toggling the overflow window
+    of the 'notify icons'.
 
 
 =8.3.0=

src/doc/hotkeys.t2t

@@ -212,6 +212,9 @@ pressing the left Windows key and the shift key and the q key
 : #Space::**Monitor_toggleTaskBar()**
   Hide / Show the task bar.
 
+: #+y::**Monitor_toggleNotifyIconOverflowWindow()**
+  Toggle the overflow window of the 'notify icons'.
+
 
 === Logging/Debugging related hotkeys ===