MathGroup Archive 2010

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: DynamicModule and FileNameSetter problem

  • To: mathgroup at
  • Subject: [mg110203] Re: DynamicModule and FileNameSetter problem
  • From: John Fultz <jfultz at>
  • Date: Tue, 8 Jun 2010 07:07:10 -0400 (EDT)

Yes, I can reproduce the problem, and it's a bug (specifically with doesn't have anything to do with DynamicModule).  Somewhat
surprisingly, it seems that the bug had never been reported before.  I reported
the issue, and developed a workaround you can use.  It just requires that you
add an Initialization option a DynamicModule encapsulating FileNameSetter. Like

DynamicModule[{dir}, {FileNameSetter[Dynamic[dir]],
  Button["Home", dir == "Specific Dir"], Dynamic[dir]},
 Initialization :> MakeBoxes[FileNameSetter[], StandardForm]]


John Fultz
jfultz at
User Interface Group
Wolfram Research, Inc.

On Mon, 7 Jun 2010 08:05:50 -0400 (EDT), Vincent wrote:
> As I understand it, DynamicModule can be used to make a variable
> maintain it's value across sessions, so that even if I close down
> Mathematica and open it up again, the values localized by
> DynamicModule should still work, using this with dynamic controls
> works fine for me, however when I try to localize a directory path,
> and use FileNameSetter to set the path, the button breaks whenever I
> reopen Mathematica.
> Does anyone have a good understanding of why this happens and could
> help to avoid it?
> Sample code:
> DynamicModule[{dir}, {FileNameSetter[Dynamic[dir]],
> Button["Home", dir == "Specific Dir"], Dynamic[dir]}]
> The button works fine after a restart, it's only FileNameSetter which
> stops working.

  • Prev by Date: Re: Lists: Row Vectors vs. Column Vectors. (feels like such a silly
  • Next by Date: Using Mathematica to create simple HTML webpages
  • Previous by thread: Re: Eliminating vertical lines in piecewise plot
  • Next by thread: Using Mathematica to create simple HTML webpages