smalltalk - How do I ask the user for a file name? -

searching call of filedialog

i ask user file name in pharo 4.0

through spotter found class

  filedialogwindow 

with method

  answerfilename 

looking senders of #answerfilename class

  uitheme 

where called in method

  choosefilenamein: athemedmorph    title: title    extensions: exts    path: path preview: preview 

and there come class

 teasilythemed 

with method

 choosefilename: title extensions: exts path: path preview: preview 

from there class

  widgetexamples class >> exampledialogs 

and have call

widgetexamples examplebuilder  choosefilename: 'pick file name'  extensions: nil path: nil preview: nil. 

however print it of expression not give file name.

question

what regular way of calling file dialog?

supplementary question after answers

two classes mentioned providing service.

• uimanager
• uitheme

uimanager comment

uimanager dispatcher various ui requests.

uitheme comment

common superclass user interface themes. provides methods creating new morphs in standard way, various "services" file dialog, message dialogs etc. , methods customising aspects of appearance of various morphs. though conceptually abstract, no code "missing". subclasses, therefore, should override aspects wish change.

what difference between 2 approaches?

the easiest way use:

uimanager default choosefilematching: nil 

you can specify patterns as:

uimanager default choosefilematching: #('*.jpg' '*.png') 

you can specify label dialog:

uimanager default     choosefilematching: #('*.jpg' '*.png')     label: 'please select , image process'