lists / tooltip

is it possible to get the first / last visible line number in a view (if not all rows are displayed / a scrollbar is existing) and/or is it possible to get the line number the mouse is above?

is it realizeable to set the tooltip 'on the fly' , because in a list with more than 1000mp3s for example it will take to long to set filesize and length of sound for each file. (or is an event tiggering with "on tooltip" i didn't notice?)

of course a function that returns if the dialog is a mdx-dialog could be nice, i.e. if you have a dialog color setup and want to set the new colors to all existing mdx-dialogs, so that you have not to mess up a dialog of course while sending commands to check, if the first parameter is "ok" (an mdx dialog) or "error" (none mdx or parameter was already set).