first-visible-line

Arguments: window-or-widget

Returns an index indicating the line of text that is currently scrolled to the top of the window or widget. Zero indicates the first line of text.

window-or-widget may be a text-edit-window, text-edit-pane, multi-line-editable-text, single-item-list, multi-item-list, outline, or scrolling-static-text.

To scroll a line to the top, call set-first-visible-line.

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Created 2012.5.30.