What does the VerticalScrollbar size parameter do?

Questions & Answers
1

Hi,

I’m in the process of writing a custom listbox, but I have run into an issue of unpredictable behavior with the vertical scrollbar. Basically, when I click either the up or down arrows, the scroll bar behaves as though I clicked in the PgUp or PgDown areas. If I click in the PgUp/PgDown areas of the scrollbar, then the scroll goes one line up/down at a time. I’ve noticed the size parameter, but its description (“How much can we see?”) is somewhat vague. How should this parameter’s value be calculated?

A typical call that I make is

m_iTopIndex = (int)(GUI.VerticalScrollbar(
  scrollbarPos, 
  m_iTopIndex, 
  2.0F, // have no idea how to calculate properly.
  0.0f, // top value
  (float)numItems));  // bottom value (numItems == roughly 6800)

Thanks,
Brian

2

The size parameter is the size of bar that scroll up and down. You can see a example in this link

http://forum.unity3d.com/threads/177866-GUI-VerticalScrollbar-usage