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Re: use of a button

  • To: mathgroup at
  • Subject: [mg106924] Re: [mg106909] use of a button
  • From: Bob Hanlon <hanlonr at>
  • Date: Thu, 28 Jan 2010 02:45:22 -0500 (EST)
  • Reply-to: hanlonr at

You have to Print

rose = Import["ExampleData/rose.gif"];

Button["Show rose", Print[rose]]

plt = Plot[x, {x, 0, 1}];

Button["Show plot", Print[plt]]

Bob Hanlon

---- Alexei Boulbitch <Alexei.Boulbitch at> wrote: 

Dear Community,

I have a lack of understanding.  (OK, I have many, but today it is about 
only one of them).  I want to make a button to show in my presentation 
an image upon pressing. However, the operation like

Button["Image name", image_identifier] does not work. To be concrete, this:

rose = Import["ExampleData/rose.gif"];
Button["Show rose", rose]

does not return the image. I cannot get, why?

I can avoid the problem say, like this:

Button["Show rose", CreateDocument[rose, WindowSize -> {100, 100}]]

I post this question, since I would like to understand, what is wrong 
with simple operators like  Button["Show rose", rose] or Button["Show 
rose", Show@rose] or such a variant Button["Show rose", 
Import["ExampleData/rose.gif"]] and how should I choose right operators 
to be used inside the Button?

Regards, Alexei

Alexei Boulbitch, Dr., habil.
Senior Scientist

ZAE Weiergewan
11, rue Edmond Reuter
L-5326 Contern

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Bob Hanlon

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