From: takaoueda@... Date: 2004-11-23T15:48:04+09:00 Subject: Ruby+Tk+HTML Example The following is a simple example of how Erb can be used to integrate HTML, Tk, and Ruby. I put this program in the \apache\cgi-bin\ directory of Apache 1.3, and tested by directly calling http://localhost/cgi-bin /erbtest.rb with etscape 4.75 and IE 6.0 Win98SE with the newest Ruby 1.8.2-14RC9 executable for Windows. I experienced: ..Apache 2.0 does not work with Win98SE. ..Both IE and Netscape do not display files of the mime type x-httpd-eruby. Therefore, I had to give up the use of so-called embedded Erb with the file extension .rhtml and the addition of AddType application and Action application to the Apache conf file. ..Tcl/Tk with Erb failed with Apache with a message of unfound "tcltklib" with the older Ruby 1.8.1 for Windows. ..The "malformed header" error occurs if the second line is missing. ..The comment on the first line is displayed on the Web page. A solution to this problem was given by Carlos in another message. ..If the Tk.mainloop is exited without printing anything, "The document has no data" error message is given by Netscape. ..In order to avoid the Dos windows being stuck or instantly closed during debugging, I opened Tool of Windows Explorer and edited File Types so that, in my case, files of the file types ..rb and .erb should be respectively opened with command.com /k "E:\ruby\bin\ruby.exe" %1 and command.com /k E:\ruby\bin\erb.bat" %1 and used Windows Explorers or editors to run the programs. Test program (erbtest.erb) #! E:/ruby182/ruby/bin/erb.bat <%print "Content-type: text/html\r\n\r\n"%> <%con_length=ENV['CONTENT_LENGTH'].to_i%> <%=content=STDIN.read(con_length)%> <%require 'tk'%> <%if content =~ /tk\+test/%> <%TkButton.new {%> <% text "Ok"%> <% command proc { p "Thank you"; exit }%> <%pack { side 'left'; padx 20; pady; 20 }%> <%}%> <%Tk.mainloop%> <%end%>

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