Both hittest() and setptr() appear to be local functions,
or perhaps defined in some Matlab toolbox that I do not have.
My deduction for setptr would be:
set(eventSrc, 'Pointer', shape)
That is, set the figure pointer to be the given shape.
The source event that you get for the localHover function is the
figure, not an individual object. I believe hittest() applied to the
figure must somehow determine which object within the figure is
being pointed to, and returns the handle of that object.
But checking the tag of an object against the string 'slider' would
not be the most robust way to detect a uicontrol of type slider,
as tags can be defined by the user. *Possibly* the object returned
is even lower level than uicontrol(), if the localHover() function
is intended to switch to the hand pointer only when you are pointing
to some sub-parts of a slider uicontrol.
This is a Usenet signature block. Please do not quote it when replying
to one of my postings. http://en.wikipedia.org/wiki/Signature_block
setptr is a standard ML function - type help setptr
hittest is undocumented. It returns the handle of the
object under the CurrentPoint in the figure. If
WindowButtonMotionFcn or WindowButtonUpFcn are inactive,
that should correspond to gco, the last object clicked on.
Otherwise it will be the object underneath the presently
displayed cursor position. See the doc for figure
"Malcolm Lidierth" <firstname.lastname@example.org> wrote in
> setptr is a standard ML function - type help setptr
I beg to disagree: setptr is an internal Matlab function
that is unsupported and only semi-documented: it has a help
page but no doc page and no online help. This is probably
due to an error on the part of MathWorks programmers, who
forgot to un-help this function using the standard "This is
undocumented, unsupported and will change in future versions
yada yada" message. There are a few other similar
semi-documented functions lurking around (it's so much fun
finding them!). The criteria for whether a function is
supported or not seems to be the availability of a doc page,
not a help page.
Specifically regarding setptr - this is a very useful
function that has been around for many years. It's a pity
it's still officially unsupported (I haven't checked whether
this has changed in R2008a).
You can think of your watch list as threads that you have bookmarked.
You can add tags, authors, threads, and even search results to your watch list. This way you can easily keep track of topics that you're interested in. To view your watch list, click on the "My Newsreader" link.
To add items to your watch list, click the "add to watch list" link at the bottom of any page.
How do I add an item to my watch list?
To add search criteria to your watch list, search for the desired term in the search box. Click on the "Add this search to my watch list" link on the search results page.
You can also add a tag to your watch list by searching for the tag with the directive "tag:tag_name" where tag_name is the name of the tag you would like to watch.
To add an author to your watch list, go to the author's profile page and click on the "Add this author to my watch list" link at the top of the page. You can also add an author to your watch list by going to a thread that the author has posted to and clicking on the "Add this author to my watch list" link. You will be notified whenever the author makes a post.
To add a thread to your watch list, go to the thread page and click the "Add this thread to my watch list" link at the top of the page.
The newsgroups are a worldwide forum that is open to everyone. Newsgroups are used to discuss a huge range of topics, make announcements, and trade files.
Discussions are threaded, or grouped in a way that allows you to read a posted message and all of its replies in chronological order. This makes it easy to follow the thread of the conversation, and to see what’s already been said before you post your own reply or make a new posting.
Newsgroup content is distributed by servers hosted by various organizations on the Internet. Messages are exchanged and managed using open-standard protocols. No single entity “owns” the newsgroups.
There are thousands of newsgroups, each addressing a single topic or area of interest. The MATLAB Central Newsreader posts and displays messages in the comp.soft-sys.matlab newsgroup.
How do I read or post to the newsgroups?
You can use the integrated newsreader at the MATLAB Central website to read and post messages in this newsgroup. MATLAB Central is hosted by MathWorks.
Messages posted through the MATLAB Central Newsreader are seen by everyone using the newsgroups, regardless of how they access the newsgroups. There are several advantages to using MATLAB Central.
Your MATLAB Central account is tied to your MathWorks Account for easy access.
Use the Email Address of Your Choice
The MATLAB Central Newsreader allows you to define an alternative email address as your posting address, avoiding clutter in your primary mailbox and reducing spam.
Most newsgroup spam is filtered out by the MATLAB Central Newsreader.
Messages can be tagged with a relevant label by any signed-in user. Tags can be used as keywords to find particular files of interest, or as a way to categorize your bookmarked postings. You may choose to allow others to view your tags, and you can view or search others’ tags as well as those of the community at large. Tagging provides a way to see both the big trends and the smaller, more obscure ideas and applications.
Setting up watch lists allows you to be notified of updates made to postings selected by author, thread, or any search variable. Your watch list notifications can be sent by email (daily digest or immediate), displayed in My Newsreader, or sent via RSS feed.
Other ways to access the newsgroups
Use a newsreader through your school, employer, or internet service provider
Pay for newsgroup access from a commercial provider
Use Google Groups
Mathforum.org provides a newsreader with access to the comp.soft sys.matlab newsgroup