From: Alex DeCaria <alex.decaria@...>
Date: 2010-02-13T20:34:57+09:00
Subject: Re: Can SWIN CommonDialog.openFilename() select multiple files?

Chris Hulan wrote:
> I was able to get your code to work, surprisingly the docs seem to
> actually be correct ;)
> Here is your (Siep) code expanded a bit:
> require 'swin'
> OFN_ALLOWMULTISELECT = 0x200
> OFN_EXPLORER  = 0x80000
> NUL = "\x00"
> filetype_filter = [['Ruby files (*.rb)','*.rb'],['All files (*.*)',
> '*.*']]
> paths = SWin::CommonDialog::openFilename( nil, filetype_filter,
> OFN_EXPLORER|OFN_ALLOWMULTISELECT, 'Choose one or more files.')
> if paths
>   files = paths.split(NUL)
>   if files.length > 1
>     puts "Found #{files.length-1} files in #{files[0]}"
>     files[1..-1].each_with_index{|el,i| puts "#{i} => #{el}"}
>   else
>     d,f = File.split(files[0])
>     puts "Single file: #{f} in #{d}"
>   end
> else
>   puts "No selction made"
> end
> 
> using OFN_EXPLORER returns the list of files as a string will NUL
> separating the file names, allowing file names to contain spaces. The
> directory is the first item in this case
> If a single file is selected, the result is a single string with the
> full path and file name.
> Selecting cancel in the dialog results in a nul return value.
> 
> I have to thank Louis Laverna for his work on the new Ruby installer,
> and epecially the dev kit that allowed me to build and install swin to
> play with this
> 
> Cheers

Chris:  Thanks for your efforts.  I copied and pasted your code, but no 
matter how many files I select, files.length is coming out to be 1. 
What happens is:

1) If I select a single file, then files contains the entire filename 
including the path.

2) If I select multiple files, then files just contains the path, with 
no filename.

The .split(NUL) method on paths doesn't seem to work for me.

I am using Windows7 Professional (64-bit).  I don't know if this is 
caused by a difference in OS?

--Alex
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