From the June 2010 Issue of Prestwood eMag

Paradox OPAL: Libraries: Using Extended Uses By Mike Prestwood

Posted 18 years ago on 2/17/2006 and updated 2/17/2006 Take Away: Using extended uses in ObjectPAL example. KB100305

Using Extended Uses

Extended Uses allows you to do compile time binding. This gives you the freedom of not having to distribute some source files. Follow the embedded comments.

Example 1 (Requires secrets3.lsl or secrets3.ldl.)

;Library::cmMsg
method cmMsg()
  msgInfo("Message", 
       "This message is from a library.")
endMethod
  
;Form.Button::pushButton
Uses ObjectPAL
  "secrets3.lsl"
endUses
  

method pushButton(var eventInfo Event)
  var
    libSecrets3 Library
  endVar
  

  libSecrets3.open("secrets3")
  libSecrets3.cmMsg()
endMethod

Example 2 (Requires secrets3.lsl during compile only.)

;Library::Const 
;Note: Example 2 also works with custom types.
Const 
  kHeader = "Warning"
  kMsg = "Your license has expired."
endConst
  
;Form.Button::pushButton
Uses ObjectPAL
  "secrets3.lsl"
endUses
  

method pushButton(var eventInfo Event)
  msgInfo(kHeader, kMsg)
endMethod

Example 3 (The old way.)

;Library::cmMsg
method cmMsg()
  msgInfo("Message", 
      "This message is from a library.")
endMethod
  
;Form.Button::pushButton
Uses ObjectPAL
  cmMsg()
endUses
  

method pushButton(var eventInfo Event)
var
  libSecrets3 Library
endVar
  

libSecrets3.open("secrets3")
libSecrets3.cmMsg()
endMethod

PS_2687

Comment 1 of 1  For the purpose of Compile time binding, I have never seen anyone more effective other than the extended uses. I have hired resume writer for help me in my resume. Using these extended uses in the ObjectPAL has become a kind of priority because it makes things easier. Posted 55 months ago

Article Contributed By Mike Prestwood:

Mike Prestwood is a drummer, an author, and creator of the PrestwoodBoards online community. He is the President & CEO of Prestwood IT Solutions. Prestwood IT provides Coding, Website, and Computer Tech services. Mike has authored 6 computer books and over 1,200 articles. As a drummer, he maintains play-drums.com and has authored 3 drum books. If you have a project you wish to discuss with Mike, you can send him a private message through his PrestwoodBoards home page or call him 9AM to 4PM PST at 916-726-5675 x205. Visit Profile