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Event on tab out of input box

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How can I detect when a user tabs out of a box in my GUI?

I have an inputbox where the user enters a number, and when they tab out of the box it needs to call a function.

This is because the value will be entered by a barcode scanner which sends a tab key.

The scanner can also send an enter key, so it may be better to send an enter key after the value is entered, and trigger the function.

So I need a way to trigger the function if an enter key is pressed, only while that inputbox is selected.


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The simplest way would be to check if the input has keyboard focus:

#include <GUIConstantsEx.au3>
#include <Constants.au3>
#include <Misc.au3>
#include <WinAPI.au3>

Local $hDLL = DllOpen("user32.dll")

$hGUI = GUICreate("Test", 500, 500)

$cInput = GUICtrlCreateInput("", 10, 10, 200, 20)

$cButton = GUICtrlCreateButton("Dummy", 10, 100, 80, 30)


While 1

    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE

    ; Is {ENTER} pressed
    If _IsPressed("0D", $hDLL) Then
        ; Does input have focus?
        If _WinAPI_GetFocus() = GUICtrlGetHandle($cInput) Then
            ; Call your function here
            MsgBox($MB_SYSTEMMODAL, "Hit", "ENTER pressed whith Input Focus")
            ; Wait for the key to be released
            While _IsPressed("0D", $hDLL)


There are more elegant methods of doing this, but this one is simple and it works. :)


Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

Open spoiler to see my UDFs:


ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area


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