Letters range of two combos

[luis713]

Hi, I have two combos and what I want to do is this:

-Combo one has the letters from A to Z

-If user selects "A" in combo one the combo two must show the letters from B to Z

-If user selects "B" in combo one the combo two must show the letters from C to Z 

-If user selects "C" in combo one the combo two must show the letters from D to Z 

and so on. this is a short example of the code that I have but I need to improve it, any idea?

I noticed when I change my choice in combo one after two times it changes the order

Thanks in advance

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#include <GUIConstantsEx.au3>
#include <GuiComboBox.au3>
Example()

Func Example()
    ; Create a GUI with various controls.
    Local $hGUI = GUICreate("Example")
    Local $idOK = GUICtrlCreateButton("OK", 310, 370, 85, 25)
    Local $combo1 = GUICtrlCreateCombo("A", 20, 50, 50, 20, $CBS_DROPDOWNLIST)
    For $i = 65 to 90
                     GUICtrlSetData(-1, chr($i))
                  Next
    Local $combo2 = GUICtrlCreateCombo("", 20, 80, 50, 20, $CBS_DROPDOWNLIST)

    ; Display the GUI.
    GUISetState(@SW_SHOW, $hGUI)

    ; Loop until the user exits.
    While 1
        Switch GUIGetMsg()
            Case $GUI_EVENT_CLOSE, $idOK
                ExitLoop

            Case $Combo1
               If Guictrlread($Combo1) = "A" Then
                  For $i = 66 to 90
                     GUICtrlSetData($Combo2, chr($i))
                  Next
               EndIf

               If Guictrlread($Combo1) = "B" Then
                  For $i = 67 to 90
                     GUICtrlSetData($Combo2, chr($i))
                  Next
               EndIf

               If Guictrlread($Combo1) = "C" Then
                  For $i = 68 to 90
                     GUICtrlSetData($Combo2, chr($i))
                  Next
               EndIf

        EndSwitch
    WEnd

    ; Delete the previous GUI and all controls.
    GUIDelete($hGUI)
EndFunc   ;==>Example

 

Edited March 9, 2018 by luis713

[Zedna]

Case $Combo1
               $c = Guictrlread($Combo1)
               $n = Asc($c)
               GUICtrlSetData($Combo2, '|') ; reset previous values
               For $i = $n+1 to 90
                  GUICtrlSetData($Combo2, chr($i))
               Next

 

[luis713]

Thanks, that's what I'm looking for