PredictText UDF not working using GUICtrlCreateCombo

[HezzelQuartz]

I try to learn from predicttext.udf example.

when I try use GuiCtrlCreateEdit like shown below, it works
 

#include-once
#include <GUIConstants.au3>
#include 'PredictText.au3'

$hGUI = GUICreate('Predict Text + GUI Learn', 220, 60)

$Input_Payment_Method = GUICtrlCreateEdit("",10, 10, 200, 50)
    ;GUICtrlSetData($Input_Payment_Method, "Wood|Metal|Plastic", "")

GUIRegisterMsg($WM_COMMAND, 'WM_COMMAND')
GUISetState()

Local $iGUIGetMsg
While 1
    $iGUIGetMsg = GUIGetMsg()
    Switch $iGUIGetMsg
        Case $GUI_EVENT_CLOSE
            ExitLoop
    EndSwitch
WEnd

Func WM_COMMAND($hWnd, $iMsg, $wParam, $lParam)

    If _WinAPI_HiWord($wParam) = $EN_SETFOCUS Then

        Local $_Words1[3] = ['Wood', 'Metal', 'Plastic']

        Switch $lParam
            Case GUICtrlGetHandle($Input_Payment_Method)
                _RegisterPrediction($lParam, $_Words1)
        EndSwitch

    EndIf
    Return $GUI_RUNDEFMSG

EndFunc

But, if I change it to GuiCtrlCreateCombo like shown below, it doesn't work
 

#include-once
#include <GUIConstants.au3>
#include 'PredictText.au3'

$hGUI = GUICreate('Predict Text + GUI Learn', 220, 60)

$Input_Payment_Method = GUICtrlCreateCombo("",10, 10, 200, 50)
    GUICtrlSetData($Input_Payment_Method, "Wood|Metal|Plastic", "")

GUIRegisterMsg($WM_COMMAND, 'WM_COMMAND')
GUISetState()

Local $iGUIGetMsg
While 1
    $iGUIGetMsg = GUIGetMsg()
    Switch $iGUIGetMsg
        Case $GUI_EVENT_CLOSE
            ExitLoop
    EndSwitch
WEnd

Func WM_COMMAND($hWnd, $iMsg, $wParam, $lParam)

    If _WinAPI_HiWord($wParam) = $EN_SETFOCUS Then

        Local $_Words1[3] = ['Wood', 'Metal', 'Plastic']

        Switch $lParam
            Case GUICtrlGetHandle($Input_Payment_Method)
                _RegisterPrediction($lParam, $_Words1)
        EndSwitch

    EndIf
    Return $GUI_RUNDEFMSG

EndFunc

How to make it works?

Thank You

[MattyD]

Hey HezzelQuartz

Just had a quick look, and it looks like the UDF is specific to edit controls unfortunately. 

The UDF works by subclassing. So in a nutshell, all messages sent to a "registered" control are intercepted by _New_WndProc, and that is where the magic happens . 
_New_WndProc contains a bunch of code that is specific to edit controls.

So yeah, it's probably possible to get comboboxes working, but it involves modifying the guts of the UDF.

PS.  Just a quick hint if you're still having a play - EN_SETFOCUS is a notification specific to edit controls, so this block of code won't fire for a combobox!

  On 3/18/2025 at 4:54 AM, HezzelQuartz said:

Func WM_COMMAND($hWnd, $iMsg, $wParam, $lParam)

    If _WinAPI_HiWord($wParam) = $EN_SETFOCUS Then

        Local $_Words1[3] = ['Wood', 'Metal', 'Plastic']

        Switch $lParam
            Case GUICtrlGetHandle($Input_Payment_Method)
                _RegisterPrediction($lParam, $_Words1)
        EndSwitch

    EndIf
    Return $GUI_RUNDEFMSG

EndFunc

Expand  

[Nine]

_GUICtrlComboAutoComplete ?

[MattyD]

Yep, good call Nine,

That mechanism should be a bit simpler to modify too if you ever had the need.

Just because I got caught out...
The example in the helpfile references <Extras\WM_NOTIFY.au3>. If you click "open this script"  from the helpfile it'll work, otherwise the library lives here:
"C:\Program Files (x86)\AutoIt3\Examples\Helpfile\Extras\WM_NOTIFY.au3"

[SOLVE-SMART]

💡 Just as further information:
Related post, regarding <Extras\WM_NOTIFY.au3>: 

@water mentioned the issue (and ticket) with the missing Extras\WM_NOTIFY.au3 file.

Best regards
Sven

[Nine]

In fact WM_NOTIFY.au3 is not needed for _GUICtrlComboAutoComplete.  Only WM_COMMAND is required and only $CBN_EDITCHANGE is to be intercepted.  The example is way too complicated for absolutely no reason.  You could simplify the winproc as this :

Func WM_COMMAND($hWnd, $iMsg, $wParam, $lParam)
  If _WinAPI_GetClassName($lParam) = "ComboBox" And _WinAPI_HiWord($wParam) = $CBN_EDITCHANGE Then _GUICtrlComboBox_AutoComplete($lParam)
  Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_COMMAND