왜 내가 가치가 아닌 제목을 물을 때 "가치를 얻을 수 없다"고보고합니까?

Question

이것은 지난 몇 가지 질문의 응용 프로그램과 동일한 코드이지만이 버전은 디버깅 도움말을 위해 "스크립트 편집기"에서 실행되도록 다시 작성되었습니다.

오류는이 코드의 마지막 줄에 의해 생성됩니다. 내게 필요한 옵션 검사기로 확인 () 모든 메뉴 항목에는 NIL 값이 있습니다. 그 이유는 특별히 제목을 대신 참조하는 이유입니다.

-- `menu_click`, by Jacob Rus, September 2006 
-- 
-- Accepts a list of form: `{"Finder", "View", "Arrange By", "Date"}` 
-- Execute the specified menu item. In this case, assuming the Finder 
-- is the active application, arranging the frontmost folder by date. 

on menuClick(mList) 
    local appName, topMenu, r 

    -- Validate our input 
    if mList's length < 3 then error "Menu list is not long enough" 

    -- Set these variables for clarity and brevity later on 
    set {appName, topMenu} to (items 1 through 2 of mList) 
    set r to (items 3 through (mList's length) of mList) 

    -- This overly-long line calls the menu_recurse function with 
    -- two arguments: r, and a reference to the top-level menu 
    tell application "System Events" to my menuClickRecurse(r, ((process appName)'s ¬ 
    (menu bar 1)'s (menu bar item topMenu)'s (menu topMenu))) 
end menuClick 

on menuClickRecurse(mList, parentObject) 
    local f, r 

    -- `f` = first item, `r` = rest of items 
    set f to item 1 of mList 
    if mList's length > 1 then set r to (items 2 through (mList's length) of mList) 

    -- either actually click the menu item, or recurse again 
    tell application "System Events" 
     if mList's length is 1 then 
      click parentObject's menu item f 
     else 
      my menuClickRecurse(r, (parentObject's (menu item f)'s (menu f))) 
     end if 
    end tell 
end menuClickRecurse 

local destination, libraryName, choices 
set destination to "/Users/bryandunphy/music" 
set libraryName to "Testing.xml" 
tell application "iTunes" to activate 
menuClick({"iTunes", "File", "Library", "Export Library…"}) 
tell application "System Events" to set the value of the text field "Save As:" of window "iTunes" of process "iTunes" to libraryName 
tell application "System Events" to tell process "iTunes" to tell its front window's group 1's pop up button 1 to click 
    tell application "System Events" to tell process "iTunes" to set choices to the title of every menu item of menu 1 of pop up button 1 of group 1 of its front window 
    repeat with ndx from 1 to count of choices 
    if the value of choices's item ndx is "" then 
     tell application "System Events" to tell process "iTunes" to select (the menu item of menu 1 of pop up button 1 of group 1 of its front window whose title is equal to item (ndx - 1) of choices) 
    end if 
end repeat 

Answer 1

'선택이'변수는 문자열 목록이 아닌 메뉴 항목의 목록이 포함되어 있기 때문에, 그래서 the value of를 제거합니다.

whose 절 대신 ->whose title is equal to (....)의 메뉴 색인을 사용할 수 있습니다.

repeat with ndx from 1 to count of choices 
    if choices's item ndx is "" then 
     tell application "System Events" to tell process "iTunes" to select (menu item (ndx - 1) of menu 1 of pop up button 1 of group 1 of its front window) 
     exit repeat 
    end if 
end repeat