title: Custom protocol handler (URI) in HTML
body: <p>I want to use a custom protocol handler in html to launch a program with parameters.</p>
  
  <p>I have created a key called EchoMe in HKEY_CLASSES_ROOT that contains URL Protocol = "" and a EchoMe/shell/open/command key with (Default) = "c:\testapp\echome.exe" "%1" "%2".</p>
  
  <p>echome.exe can have the parameter --echo-me text to throw it back (eg 'C:\testapp\echome.exe --echo-me text' opens the program and echos 'test')</p>
  
  <p>Now I can't figure out how to decently call it in HTML. </p>
  
  <p>So far I have tried passing 2 arguments (like a href="EchoMe:--echo-me Test") but that seems to be as wrong as it looks.</p>
  
  <p>I also tried only passing one argument and change the call itself (open/command key with (Default) = "C:\testapp\echome --echo-me " "%1" and change the html to href="EchoMe:test" but still 'test' is not showing up in my window.</p>
  
  <p>I'm very certain the problem is in the HTML but I couldn't find any useful information concerning that matter</p>