title: How to implement a callback method within DLL (Delphi / TJVPluginManager + TJvPlugin)
body: <p>I'm building an application working with plugins. I'm using the excellent JVCL plugin framework. I first started to use package plugin. It worked like a charm but had a big drawback : the needs to give runtimes bpl (23Mo). So I switch to DLL plugin.</p>
  
  <p>I need to call a method (procedure having 3 parametes) from hostapplication but I don't know how to do it. OBones explained in the Jedi newgroup to use callback functions but I have no clue on how to achieve this.</p>
  
  <p>Can someone kindly explain me or better, send me an example? You can take the JVCL  1SimplePlugin demo and update it.</p>
  
  <p>Thank in in advance</p>
  
  <p>BR</p>
  
  <p>Stephane Wierzbicki </p>