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  • To: mathgroup at
  • Subject: [mg61143] Re:
  • From: Omega Consulting <info at>
  • Date: Tue, 11 Oct 2005 03:21:28 -0400 (EDT)
  • References: <>
  • Sender: owner-wri-mathgroup at

I don't remember if anyone answered this. The reason is that buttons  
evaluate in the frontend, by default, not the kernel. Only frontend  
operations are allowed. To use the kernel, you set the ButtonEvaluator.

        StringJoin["file:///", "E:/Documents/", "WebMath.htm"]], None},
    ButtonStyle->"Hyperlink", ButtonEvaluator->Automatic]], "Text"]

Omega Consulting
The final answer to your Mathematica needs.

On Oct 3, 2005, at 3:06 AM, Murray Eisenberg wrote:

> I'm trying to build up a local file URL to be the value of ButtonData
> for a ButtonBox.  (The file is in a subdirectory of the current
> notebook's directory, and I want to be able to refer to the target  
> file
> no matter where I move the entire directory.)
> If I use an actual string as the argument in ButtonData:>{URL[...],
> None}, as in the following expression of that cell, it works just  
> fine:
> Cell[TextData[ButtonBox["webmath",
>    ButtonData:>{
>      URL[ "file:///E:/Documents/WebMath.htm""], None},
>    ButtonStyle->"Hyperlink"]], "Text"]
> However, if I try to build up the argument to URL in any way, even  
> as in
> the following version where I simply join strings, then Mathematica
> reports a MathLink error occurred while receiving BoxData" after I
> convertthe expression to an actual input cell and click the hyperlink:
> Cell[TextData[ButtonBox[webmath",
>    ButtonData:>{
>      URL[
>        StringJoin["file:///", "E:/Documents/", "WebMath.htm"]], None},
>    ButtonStyle->"Hyperlink"]], "Text"]
> What's wrong and how can it be fixed?
> Version: 5.2 for Microsoft Windows (June 20, 2005)
> (I actually want to do something more sophisticated, namely instead of
> "E:/Documents/", use the value of a function ThisNBPath I've defined
> that will return the path to the directory of the evaluation  
> notebook.)
> -- 
> Murray Eisenberg                     murray at
> Mathematics & Statistics Dept.
> Lederle Graduate Research Tower      phone 413 549-1020 (H)
> University of Massachusetts                413 545-2859 (W)
> 710 North Pleasant Street            fax   413 545-1801
> Amherst, MA 01003-9305

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