Re: Dynamically Loading NSComboBox From a Database.
Re: Dynamically Loading NSComboBox From a Database.
- Subject: Re: Dynamically Loading NSComboBox From a Database.
- From: Jim Murry <email@hidden>
- Date: Tue, 2 Apr 2002 13:35:34 -0800
I have not been able to figure out how to get MySQL to notify my program
when it gets changed by another computer. That was my initial approach,
but could not figure that out so I was looking into this approach. I
agree that there would be fewer calls to the database using your
approach. If there are any suggestion on how to get a remote MySQL
database to do notifications, I might be able to implement the
NSComboBox properly.
I am using NSComboBox's since some people cannot type any quicker than a
turtle and others that can type, can perform data entry much faster if
they do not have to reach for the mouse.
As to using it because windows has it. I have always introduced Mac's
to work by bringing my own to avoid windows.
On Monday, April 1, 2002, at 06:16 PM, Chris Hanson wrote:
At 3:51 PM -0800 4/1/02, Jim Murry wrote:
I would like to populate a NSComboBox just prior to displaying the
possible items from a database. I do not know how to intercept the
click so that I can dispose of the old data and display fresh data so
that it would display the most recent changes.
It would be better to design your application to go the opposite
direction: Update the contents of the menu whenever your data model
changes. This way, you don't wind up with situations where the user
clicks on the popup menu[1] and then waits for a database operation to
time out.
In general, when doing Cocoa development you're better off trying to
work within the framework and patterns it provides than you are trying
to second-guess it.
-- Chris
[1] This is a general plea to developers: *Please* use a popup menu
unless you specifically need a combo box. Don't just use a combo box
because that's what you'd use on Windows or X11 or in Java; these
platforms have combo boxes because they don't have real popup menus...
-- Chris Hanson | Email: email@hidden
bDistributed.com, Inc. | Phone: +1-847-372-3955
Mac OS X & WebObjects Consulting | Fax: +1-847-589-3738
http://bdistributed.com/ | Personal Email: email@hidden
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