find-position-in-line

Given a graphical location within a line of the buffer, returns the item buffer position at that location. Lines are numbered starting with 0.

The result is only valid when the buffer is viewed (see Basic Organization). Calling this method may force the recalculation of location information, even if the buffer currently has delayed refreshing (see refresh-delayed?).

• (send a-wx:media-edit find-position-in-line line x at-eol? on-it? edge-close?) -> small integer
      line : small integer
      x : inexact real
      at-eol? = null : boxed boolean or null
      on-it? = null : boxed boolean or null
      edge-close? = null : boxed inexact real or null

  See End of Line for a discussion of the at-eol? argument. The on-it? box is filled with #t if the line actually touches this position, or #f otherwise, unless on-it? is null.

  See find-position for a discussion of edge-close?.