A gap in IUP dropdown lists

问题

Dropdown lists in IUP for Windows contain a superfluous gap after the last element if the number of elements is sufficient to warrant a scrollbar (which is five or more).

Is this something I can change?

Example

dropdown = DIALOG[TITLE=dropdown.led](
  HBOX[CMARGIN=10x10,CGAP=10](
    LIST[VALUE=3, 1=я, 2=ты, 3=оно, 4=мы, 5=вы, 6=они, DROPDOWN=YES](do_nothing),
    LIST[VALUE=3, 1=ik, 2=je, 3=hij, 4=we, DROPDOWN=YES](do_nothing)
  )
)

All questions that pertain to this particular example:

1. How do I get access to GUI elements in a IUP dialog loaded from a LED file?
2. How can I make Russian letters visible in a IUP dialog loaded from a LED file?
3. A gap in IUP dropdown lists (current)

回答1:

This behavior is dependent on the VISIBLEITEMS attribute which default is 5.

来源：https://stackoverflow.com/questions/43450141/a-gap-in-iup-dropdown-lists