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AndyS01

Trap the ENTER key via GUISetAccelerators() when in EventMode

By AndyS01, in AutoIt GUI Help and Support

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AndyS01    0

AndyS01
Posted
I have a GUI with several input boxes and I want to trap the ENTER key so I can call handlers for each one.
 
However, when I put in a HotKeySet() to trap the ENTER key, it traps it OK, but I also get traps when I press the ENTER key anywhere else on my desktop, no matter what GUI has focus, so I changed the code to use GUISetAccelerators().  I cannot see how to attach a handler for the ENTER key for each of my input controls.
 
My real script uses event mode (Opt("GUIOnEventMode", 1)), so that's what I'm using in my test code.
 
Here is my test code:
#NoTrayIcon
#Region ;**** Directives created by AutoIt3Wrapper_GUI ****
#AutoIt3Wrapper_UseUpx=n
#AutoIt3Wrapper_Au3Check_Parameters=-d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6
#EndRegion ;**** Directives created by AutoIt3Wrapper_GUI ****

#include <GUIConstantsEx.au3>
#include <StructureConstants.au3>
OnAutoItExitRegister("ExitStageLeft")

Opt("GUICloseOnESC", 1)
Opt("GUIEventOptions", 1)
Opt("GUIOnEventMode", 1) ;; <=====
Opt("WinTitleMatchMode", 1)
Opt('MustDeclareVars', 1)

Global $hWnd_list1, $hWnd_input1, $hGUI, $sWinTitle
Global $iID_list1, $iID_input1

_Main()
Exit (1)

Func _Main()

    $sWinTitle = "ENTER key trap test"
    $hGUI = GUICreate($sWinTitle, 500, 230)

    GUICtrlCreateButton("Test", 5, 5, 50, 25)
    $iID_input1 = GUICtrlCreateInput("input1", 70, 5, 100, 25)
    $hWnd_input1 = GUICtrlGetHandle($iID_input1)

    $iID_list1 = GUICtrlCreateEdit("list1", 10, 40, 475, 190)
    $hWnd_list1 = GUICtrlGetHandle($iID_list1)
    GUICtrlSetData($iID_list1, "abcdefghijklmnopqrstuvwxyz" & @CRLF, 1)

    ConsoleWrite("+++: $iID_list1  = " & $iID_list1 & @CRLF)
    ConsoleWrite("+++: $iID_input1 = " & $iID_input1 & @CRLF)

    GUISetState()

    GUICtrlSetOnEvent($iID_list1, "handle_List1")
    GUICtrlSetOnEvent($iID_input1, "handle_Input1")

    GUISetOnEvent($GUI_EVENT_CLOSE, 'ExitStageLeft')

    Local $aAccelKeys[2][2]
    $aAccelKeys[0][0] = "{ENTER}"
    $aAccelKeys[0][1] = $iID_input1
    $aAccelKeys[1][0] = "{ENTER}"
    $aAccelKeys[1][1] = $iID_list1

    GUISetAccelerators($aAccelKeys)

    While (1)
        Sleep(250)
    WEnd
EndFunc   ;==>_Main

Func ExitStageLeft()
    Exit (0)
EndFunc   ;==>ExitStageLeft

Func handle_Input1()
    ConsoleWrite("+++: handle_Input1() entered" & @CRLF)
EndFunc   ;==>handle_Input1

Func handle_List1()
    ConsoleWrite("+++: handle_List1() entered" & @CRLF)
EndFunc   ;==>handle_List1

 

 

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BrewManNH    1,303

BrewManNH
Posted

You can't use the same hotkey or accellerator for 2 controls at the same time.

If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag Gude
How to ask questions the smart way!

I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.  -  ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.  -  Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.  -  _FileGetProperty - Retrieve the properties of a file  -  SciTE Toolbar - A toolbar demo for use with the SciTE editor  -  GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.  -   Latin Square password generator

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LarsJ    982

LarsJ
Posted

Try this:

#NoTrayIcon
#Region ;**** Directives created by AutoIt3Wrapper_GUI ****
#AutoIt3Wrapper_UseUpx=n
#AutoIt3Wrapper_Au3Check_Parameters=-d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6
#EndRegion ;**** Directives created by AutoIt3Wrapper_GUI ****

#include <WinAPI.au3>
#include <GUIConstantsEx.au3>
#include <StructureConstants.au3>
OnAutoItExitRegister("ExitStageLeft")

Opt("GUICloseOnESC", 1)
Opt("GUIEventOptions", 1)
Opt("GUIOnEventMode", 1) ;; <=====
Opt("WinTitleMatchMode", 1)
Opt('MustDeclareVars', 1)

Global $hWnd_list1, $hWnd_input1, $hGUI, $sWinTitle
Global $iID_list1, $iID_input1, $iID_Enter

_Main()
Exit (1)

Func _Main()

    $sWinTitle = "ENTER key trap test"
    $hGUI = GUICreate($sWinTitle, 500, 230)

    GUICtrlCreateButton("Test", 5, 5, 50, 25)
    $iID_input1 = GUICtrlCreateInput("input1", 70, 5, 100, 25)
    $hWnd_input1 = GUICtrlGetHandle($iID_input1)

    $iID_list1 = GUICtrlCreateEdit("list1", 10, 40, 475, 190)
    $hWnd_list1 = GUICtrlGetHandle($iID_list1)
    GUICtrlSetData($iID_list1, "abcdefghijklmnopqrstuvwxyz" & @CRLF, 1)

    ConsoleWrite("+++: $iID_list1  = " & $iID_list1 & @CRLF)
    ConsoleWrite("+++: $iID_input1 = " & $iID_input1 & @CRLF)

    GUISetState()

    GUISetOnEvent($GUI_EVENT_CLOSE, 'ExitStageLeft')

    $iID_Enter = GUICtrlCreateDummy()
    GUICtrlSetOnEvent($iID_Enter, "handle_Enter")
    Local $aAccelKeys[1][2]
    $aAccelKeys[0][0] = "{ENTER}"
    $aAccelKeys[0][1] = $iID_Enter

    GUISetAccelerators($aAccelKeys)

    While (1)
        Sleep(250)
    WEnd
EndFunc   ;==>_Main

Func ExitStageLeft()
    Exit (0)
EndFunc   ;==>ExitStageLeft

Func handle_Enter()
  Local $hCtrl = ControlGetHandle( $hGUI, "", ControlGetFocus( $hGUI ) )
  Local $iCtrl = _WinAPI_GetDlgCtrlID( $hCtrl )
  Switch $iCtrl
    Case $iID_list1
      ConsoleWrite("+++: handle_List1() entered" & @CRLF)
    Case $iID_input1
      ConsoleWrite("+++: handle_Input1() entered" & @CRLF)
  EndSwitch
EndFunc
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AndyS01    0

AndyS01
Posted

Thank you very much!  Using a dummy control to handle the ENTER key only when it's pressed somewhere on the main GUI did the trick.  I'll add this little gem to my collection of tips and workarounds.

 

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AndyS01    0

AndyS01
Posted

I ran into a problem implementing LarsJ's code.  If I don't handle the ENTER key for a certain control and I want that control to receive an actual ENTER key event, the ENTER key is ignored.  If I Send("{ENTER}") to those controls, I get into an infinite loop.

Here is my handler code:

Func handle_ENTERKey($iCtrl)
    local $handled = False

    Switch $iCtrl
        Case $iID_list1
            ConsoleWrite("+++: handle_List1() entered" & @CRLF)
            $handled = true
        Case $iID_input1
            ConsoleWrite("+++: handle_Input1() entered" & @CRLF)
            ;;$handled = true
    EndSwitch

    if (not $handled) Then
        Send("{CRLF}")
    EndIf
EndFunc   ;==>handle_ENTERKey
 

I call this code from the dummy control's handle_ENTER() handler, with $iCtrl as its parameter..

If I handle the event, everything is OK, but if I want the ENTER key to go into my list control, sending a "{ENTER}" key gets me into a loop because that will call the ENTER key handler again.

How can I pass the ENTER key to controls I don't want to do any special handling for?

 

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Chimp    682

Chimp
Posted (edited)

I ran into a problem implementing LarsJ's code.  If I don't handle the ENTER key for a certain control and I want that control to receive an actual ENTER key event, the ENTER key is ignored.  If I Send("{ENTER}") to those controls, I get into an infinite loop.

. . . . .

How can I pass the ENTER key to controls I don't want to do any special handling for?

 

you should disable accelerators,  ControlSend {ENTER} to control with focus and reenable accelerators again

....have a look to link I posted above ....

edit:

also look to post >#8 of the above topic for an explanation

Edited by PincoPanco

small minds discuss people average minds discuss events great minds discuss ideas.... and use AutoIt....

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AndyS01    0

AndyS01
Posted (edited)

Right-o.  I changed my Enter key handler to look something like this:

Func handle_ENTERKey($iCtrl)
    local $handled = False

    Switch $iCtrl
        Case $iID_list1
            ConsoleWrite("+++: ENTER while on list1" & @CRLF)
            ;;  $handled = true
        Case $iID_input1
            ConsoleWrite("+++: ENTER while on Input1" & @CRLF)
            $handled = true
    EndSwitch

    if (not $handled) Then
        GUISetAccelerators(0)
        ConsoleWrite("+++: sending {ENTER} to control ID " & $iCtrl & @CRLF)
        Send("{ENTER}")
        GUISetAccelerators($AccelKeys) ;
    EndIf
EndFunc   ;==>handle_ENTERKey

Works like I want it to.  Thanks, PincoPanco

Edited by AndyS01

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