Thanks to Ray for bringing this up
and thanks to Mark for his perfectly succulent getprops example...
6 years later, and now I get it! how getprops works...
who says you can't teach an old dog new tricks?
Hi Xavier,
Glad to see you are now taking a serious interest in getProp.
To answer the question on the difference between
getProp someProperty
and
function someFunction
This is obvious. The first let you manipulate a property, that is an
attribute of an object (group, button, graphic, etc.) layed on the
screen. Attributes refer to what the object look like, its appearance
on the screen. The second let you run a function. A function is
something that will transform some data. These data can be attributes
of an object. For instance, you can convert radians into degrees or
RGB colors into HSV. You can also manipulate information about the
objects on the screen.
objects pGroup example, best is to use:
function objects pGroup
repeat with x = 1 to number of controls of pGroup
put the name of control x of pGroup & return after myList
end repeat
sort myList
return myList
end objects
Personally, I only use getProp to go through a sequence of value
assignment. Take the value if there is any provided. If there is none
fetch a default value for the property if I have defined any, and
utlimately, assign a default value of my own:
getProp gridColor
put the gridColor of me into tValue
if tValue is empty then put the defaults["gridColor"] of me into
tValue
if tValue is empty then put 127,164,198 into tValue
return tValue
end gridColor
Checking that the value is a well formed color value take place
somewhere else (in the "controller" part of the program) -- I got
quite fond of the MVC approach, recently.
Playing around with getProp, setProp, I haven't found an answer to
this yet. Is there a way to capture getProp, setProp calls?
I want to be able to write
set the dontexistyet of me to something
and get to know that I tried to set a property that doesn't exist
yet. Try/catch doesn't capture this. I could of course check whether
the property is within "the customProperties " of the object. But
this requires a priori testing. I prefer to be notified after trying
to use it. Any clue?
Best,
Marielle
------------------------------------------------------------------------
--------
Marielle Lange (PhD), Psycholinguist
Alternative emails: [EMAIL PROTECTED],
Homepage
http://homepages.widged.com/mlange/
Easy access to lexical databases http://
lexicall.widged.com/
Supporting Education Technologists http://
revolution.widged.com/wiki/
_______________________________________________
metacard mailing list
metacard@lists.runrev.com
http://lists.runrev.com/mailman/listinfo/metacard
