NIM_SETFOCUS top-level constant Null safety
Shell32.dll version 5.0 and later only. Returns focus to the taskbar notification area. Notification area icons should use this message when they have completed their UI operation. For example, if the icon displays a shortcut menu, but the user presses ESC to cancel it, use NIM_SETFOCUS to return focus to the notification area.
const NIM_SETFOCUS = 0x00000003;