Howdy,
I've had the scrolling working since Ken ray posted the steps.
Now I want to simulate a grab (OH, do I ever wish Rev had a 'grab with
message within rect') which scrolls the group, including the scrollbars to
follow it, of course.
It's quite convoluted, because it needs to:
1) Work within scroll bounds (4 scroll coordinates).
2) Work backwards from a normal grab routine because of the way the scroll
works.
3) Switch cursors.
4) Work only while the mouse is down.
Where might a set of map-grabbing routines be which might help (maps are
usually bigger than the window)?
Has anyone done what I'm talking about? I've been fiddling with it for hours
and can't quite get it. Something is always wrong, either in my max/min
routine, or the cursor offset. My pore ole brain's in a twist.
Maybe there's an easier way I don't know about.
Try this in the group script.
I might cover item 2, 4 and (with two more lines in "mousedown" ;-) 3 of your wishlist.
I am not sure if i understand item 1, but this one will get you started...
local darfziehen, x1, y1 ## darfziehen = german for maydrag
on mousedown put true into darfziehen put the hScroll of group "xxx" + the mouseH into x1 put the vScroll of group "xxx" + the mouseV into y1 end mousedown
on mouseup put empty into darfziehen end mouseup
on mouserelease mouseup end mouserelease
on mousemove x,y if darfziehen = empty then exit mousemove set the hScroll of group "xxx" to x1 - x set the vScroll of group "xxx" to y1 - y end mousemove
Hope that helps...
TIA, Ken N.
Regards
Klaus Major [EMAIL PROTECTED] www.major-k.de
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