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Unexpected list processing results in Xdialog

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    Unexpected list processing results in Xdialog

    I'm getting an unexpected result processing a simple list.

    I create a CR LF list, let a user pick more than 1 choice, then convert the result to a comma delimited list. The last result chosen always becomes the first entry in the comma delimited list (at least in my tests). This is not something that is happening as a result of the CRLF_TO_COMMA() function, which preserves the original order.

    Here's the code that demonstrates this. Am I doing something wrong?

    dim vIncludeTypes as c
    DELETE a_vIncludeTypes		
    DIM a_vIncludeTypes[17] as c
    dim temp_list as c 
    temp_list = <<%list%
    dim temp_comma1 as c
    temp_comma1 = crlf_to_comma(temp_list)
    msgbox("1st Results",temp_comma1+CRLF(2)+"NOTE THE ORDER OF ITEMS IS PRESERVED")
    ok_button_label = "&OK"
    cancel_button_label = "&Cancel"
    varC_result = ui_dlg_box("Choose several and note the order",<<%dlg%
    Account Types To Include :| [%M%.40,5vIncludeTypes^#a_vIncludeTypes];
    <*15=ok_button_label!OK> <15=cancel_button_label!CANCEL>;
    dim temp_comma2 as c
    temp_comma2 = crlf_to_comma(vIncludeTypes)
    msgbox("2nd Results",temp_comma2+CRLF(2)+"NOTE THE ORDER OF ITEMS IS NOT PRESERVED")

    Re: Unexpected list processing results in Xdialog

    Bill, I see the same results here and agree they seem unexpected. The multi-select list box is producing a cr-lf delimited list that does not maintain the relative "position" of selected items, either by the order in which they are selected or by the order in which they are listed in the source list / array. All selected values are returned in the their original sort sequence except for the final selected value which is put at the beginning of the returned list.

    While this usually makes no difference I can see where it might be confusing to users.

    I recommend you forward your script to Alpha with a formal bug report. (Use the Send Bug Report option on the help menu in Alpha Five). It seems to me the multi-select list box should either:

    a) return the items in the order they were selected; or

    b) return the items in the order they appeared originally in the source list / array

    What's happening now is a mish mash of both... and it's confusing.


      Re: Unexpected list processing results in Xdialog

      Thanks, Tom. I'll do that.

      For some applications, I could resort the comma delimited list, but this is one where the order isn't sortable without a lot of work.


        Re: Unexpected list processing results in Xdialog

        Originally posted by Bill Murray View Post
        Thanks, Tom. I'll do that.

        For some applications, I could resort the comma delimited list, but this is one where the order isn't sortable without a lot of work.

        IT is not a bug. the xdialog listbox does not always makes the last entry selected the top of the list. This is intentional. It allows you to know what entry in the list has focus.

        The solution to your problem, howwever is trivial.

        To convert the list returned by the listbox into the order you want, just add this code before you do your crlf_to_comma()

        ORDERlIST = word_in_common(TEMP_LIST,vIncludeTypes,CRLF())

        this will sort 'vIncludeTypes' into the order defined by 'temp_list'


          Re: Unexpected list processing results in Xdialog

          Thanks for the very prompt response, Selwyn, both here & via email.

          You're 100% right: that simple code addition solved my problem. The "focus" issue has no importance for me, but I can imagine it might for others.


            Re: Unexpected list processing results in Xdialog

            Selwyn, thanks for the information and the solution.

            Your description of the standard behavior of the control and the solution in cases like Bill's would be a useful addition to the documentation of the multi-select list box control in Alpha's help file.