[beginner] x,y coordinates in LiveCode
dunbarx at aol.com
dunbarx at aol.com
Sat Jan 10 19:03:23 CET 2015
What did you mean by "testing"?
I take it back. I had both a "mouseWithin" and a "mouseEnter" handler in the same script, just fooling around. When I comment out the "mouseEnter", the "mouseWithin" is not sent. And this is spelled out in the dictionary. Well what do you know?
From: Richard Gaskin <ambassador at fourthworld.com>
To: use-livecode <use-livecode at lists.runrev.com>
Sent: Sat, Jan 10, 2015 12:51 pm
Subject: Re: [beginner] x,y coordinates in LiveCode
Shawn Bl wrote:
> I'm trying to find the x,y coordinates with a mouse hover to find the
> location of buttons on my card.
> Perhaps a little stack or something. Trying to create a menu and need to
> the x,y coordinates for several buttons.
Like most languages, LiveCode provides a way to express the bounding
rectangle of an object, as well as its location.
But it may be helpful to note that these values may be different from
what you'll find in other languages.
top, right, bottom, left
...but in LiveCode (and other xTalks) the order is:
left, top, right, bottom
Also, in some other languages the location property is a pair of
coordinates expressing the top-left of the object, but in xTalks like
LiveCode the location is the centerpoint of the object. Thankfully both
languages use the same order for points, x,y.
Possibly beyond the scope of your interest, if you're coming from a CSS
background it can be helpful to remember that the margin property in LC
is the opposite how it's used in CSS: in CSS the margin defines the area
outside of the control's border, but in LiveCode is defines the boundary
within the border (such as the space between the edge of a field and the
text within it).
In LiveCode you can observe and modify the size and location properties
of selected controls with the "Size and Position" pane of the Inspector.
Fourth World Systems
Software Design and Development for the Desktop, Mobile, and the Web
Ambassador at FourthWorld.com http://www.FourthWorld.com
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