Custom events in Flash 3.0

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Introduce the application of custom events in flash as with the example of boys and girls

 

  
Package {

Import flash. Events. event;

  //  Import event class  
  
Public class customevent extends event {

  //  Declare Custom Event extended Custom Event class as its subclass  
  
Public static const sendflower: String  = "  Sendflower  "  ;

  //  Declare static constants as Event Type 1  
  
Public static const sendcar: String  =  "  Sendcar  "  ;

  //  Declare static constants as event type 2  
 
Public  VaR  Info: string;

  //  Declare variables to store event information, which is also the main reason for using custom events.  
  
  //  Carrying Additional information  
  
Public  Function  Customevent (type: String, INF ){

Super (type );

  //  Call the parent class constructor and set the input parameters as the event type. 
  
Info  =  INF;

  //  Store input parameter 2 in info  
  
}

}

}

  //  2. Boys:  
  Package {

Import flash. Events. eventdispatcher;

  //  Import event sender class  
 
Import flash. Events. event;

  //  Import event class  
  
Public class boy extends eventdispatcher {

  //  Declare the boy class to expand from the event sender class and become its subclass  
  
Public  Function  Sendflower (){

  //  Declare the public sending method;  
  
 VaR  Info: String  =  "  Rose  "  ;

  //  Declare local variables and set sending information  
  
  VaR  Events  =  New  Customevent (customevent. sendflower, Info );

  // Declare an instance of the New Custom Event class, and set the type to the first,  
  
  //  Store the sent information to the event  
  
  This  . Dispatchevent (events );

  //  Send this event  
  
}

Public  Function  Sendcar (){

  // Declare Public delivery methods;  
  
  VaR  Info: String  =  "  Millions of sports cars  "  ;

  //  Declare local variables and set sending information  
  
  VaR  Events  = New  Customevent (customevent. sendcar, Info );

  //  Declare an instance of the New Custom Event class, and set the type to second,  
  
  //  Store the sent information to the event  
  
  This  . Dispatchevent (events );

  //  Send this event  
 
}

}

}

  //  3. GIRLS:  
  Package {
Public class girl {
Public  Function  Replay (Info ):  Void  {
Trace (Info );
}
  //  Declare Public methods and respond  
  }
}
  //  4. Document Type: 
  Package {

Import flash. display. Sprite;

  //  Import sprite class  
  
Public class documents extends sprite {

  //  Declaration Document class extended from sprite class  
  
Private  VaR  _ BOY: boy;

  //  Declare the private property as the boy type  
 
Private  VaR  _ GIRL: girl;

  //  Declare private property as girl type  
  
Public  Function  Documents (){

  //  Constructor  
  
_ Boy  =  New  Boy;

 //  Create a boy instance  
  
_ Girl  =  New  Girl;

  //  Create girl instance  
  
_ Boy. addeventlistener (customevent. sendflower, _ Hand );

  //  Add customevent. sendflower event listening type for boys  
 
_ Boy. addeventlistener (customevent. sendcar, _ Hand );

  //  Add customevent. sendcar event listening type for boys  
  
_ Boy. sendcar ();

  //  Call the boy's delivery method. You can try again to call the boy's sendflower  
  
  //  Try the method to see how the results are different.  
  
}

Private  Function _ Hand (E: customevent ):  Void  {

  //  Declare event Processor  
  
_ Girl. Replay (  "  I received a handsome guy who gave me the following:  "  +  E.info );

  //  Call the girl's replay method.  
  
}

}

}