need help on initalizing input ctrl automatically

[lhw]

hello, guys i got problem on getting input control to initial state, 

i need inputting number from 1- 256 to input control as conditions,then my app can do something, is there a way can automatically update input control to initial state without pressing backspace key when i input next number, i have worked around on this a couple hours with failure,  

Any help will be appreciated, lhw

 

my codes like below

 

#include <ButtonConstants.au3>
#include <EditConstants.au3>
#include <GUIConstantsEx.au3>

$GUI = GUICreate("Input Test", 278, 215)
$cInput = GUICtrlCreateInput("", 24, 16, 60, 30, $ES_NUMBER)
GUICtrlSetLimit(-1, 3, 1)

$Button = GUICtrlCreateButton("Button", 192, 152, 73, 33, $BS_DEFPUSHBUTTON)
$lab= GUICtrlCreateLabel("", 16, 80, 161, 105)
GUICtrlSetBkColor(-1, 0XFFFFFF)
GUICtrlSetData(-1, "")
GUISetState(@SW_SHOW)

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
        
        Case $Button        
              $DATA = GUICtrlRead($CInput)
              If $DATA >= 1 And $DATA <= 256 Then
            ;do something 
            GUICtrlSetData($LAB, $DATA)                 
             Else
            GUICtrlSetData($CInput, '')
            MsgBox(0, 0, 'invalid input')
             EndIf

    EndSwitch
WEnd

 

[Melba23]

lhw,

I would use a message handler to look for changes to the input and reset it to the last valid input - soemthing like this:

expandcollapse popup

#include <ButtonConstants.au3>
#include <EditConstants.au3>
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>

; Declare a variable to hold the last valid input content
Global $iValid

$GUI = GUICreate("Input Test", 278, 215)
$cInput = GUICtrlCreateInput("", 24, 16, 60, 30, $ES_NUMBER)
GUICtrlSetLimit(-1, 3, 1)

$Button = GUICtrlCreateButton("Button", 192, 152, 73, 33, $BS_DEFPUSHBUTTON)
$lab = GUICtrlCreateLabel("", 16, 80, 161, 105)
GUICtrlSetBkColor(-1, 0XFFFFFF)
GUICtrlSetData(-1, "")
GUISetState(@SW_SHOW)

; Register our handler
GUIRegisterMsg($WM_COMMAND, "_WM_COMMAND")

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
        Case $Button
            GUICtrlSetData($lab, GUICtrlRead($cInput))
    EndSwitch
WEnd


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

    #forceref $hWnd, $iMsg, $lParam

    $iCID = BitAND($wParam, 0xFFFF)
    $iCode = BitShift($wParam, 16)

    Switch $iCode
        Case $EN_CHANGE ; Something has changed in an input
            Switch $iCID
                Case $cInput ; And it is our input
                    $iContent = Number(GUICtrlRead($cInput))
                    Switch $iContent
                        Case 0 To 256 ; It is valid so save it
                            $iValid = $iContent
                        Case Else ; it is not valid so replace it with the last valid entry
                            GUICtrlSetData($cInput, $iValid)
                    EndSwitch
            EndSwitch
    EndSwitch

EndFunc   ;==>_WM_COMMAND

If you are not too familiar with Windows message handlers, I recommend the GUIRegisterMsg tutorial in the Wiki.

All clear?

M23