CODEWITHSUNDEEP
c#callback
edgarmtze
edgarmtze

Reputation: 25038

call finish callback when finishing other internal dependent finish callback method

I have a method myobj_EndInteractionEvt that is executed when an event occurs

In main class I register like:

//on main class register method passing args like
lo.myobj.EndInteractionEvt += (s, args) => updateInteraction(lo.myobj_EndInteractionEvt(s, args));

//this is called when finish executin "lo.myobj_EndInteractionEvt" 
public void updateInteraction(AOItour  tour)
{
    Console.WriteLine(tour.StateOfAOItour );  
    ClearMsg();
    etc...
}

Inside myobj class I call myobj_EndInteractionEvt which returns an object AOItour

internal AOItour  myobj_EndInteractionEvt(vtkObject losender, vtkObjectEventArgs e)
{
    //do stuff and return AOItour
    return AOItour;
}

this works as it is needed (mostly because I am working on vtk and this needs to use lots of callbacks), the issue comes as myobj has an other callback angleEndInteractionEvt that updates the AOItour internally

public void angleEndInteractionEvt(vtkObject sender, vtkObjectEventArgs e) {
    //AOItour has been modified, so i would  like to call own "myobj_EndInteractionEvt" 
    // so I can pass 
    // modified AOItour to it and  then  myobj_EndInteractionEvt would return AOI to
    // updateInteraction 
}

How to call callback myobj_EndInteractionEvt at the end angleEndInteractionEvt?

I have tried 

public void angleEndInteractionEvt(vtkObject sender, vtkObjectEventArgs e) {
  //some stuff
  myobj_EndInteractionEvt(sender,e);       
}

And it correctly goes to myobj_EndInteractionEvt but the issue is after that execution, program returns to angleEndInteractionEvt and does not go updateInteraction How to do that?

Upvotes: 0

Views: 183

Answers (2)

Ian
Ian

Reputation: 34489

You'll need to trigger the Event that you've hooked up to. It's a little difficult understanding you're structure but typically you'd this in the class where you're event has been defined:

public class MyObj
{
   public void angleEndInteractionEvt(vtkObject sender, vtkObjectEventArgs e) {
      // Do stuff
      if(EndInteractionEvt != null) {
         EndInteractionEvt(sender, e);
      }
   }
}

Typically however sender should be this - the instance that triggered the event.

At this point the following line will kick into play:

lo.myobj.EndInteractionEvt += (s, args) => updateInteraction(lo.myobj_EndInteractionEvt(s, args));

Firstly your myobj_EndInteractionEvt method is going to be called which should return the AOITour. 

internal AOItour  myobj_EndInteractionEvt(vtkObject losender, vtkObjectEventArgs e)
{
    //do stuff and return AOItour
    return AOItour;
}

The result of this should then get passed into updateInteraction that I've listed below so you're logging should now kick in.

public void updateInteraction(AOItour  tour)
{
    Console.WriteLine(tour.StateOfAOItour );  
    ClearMsg();
    etc...
}

What might be better and a little more readable (if they're defined on the same object) is to instead simply do:

public void angleEndInteractionEvt(vtkObject sender, vtkObjectEventArgs e) {
   // Do stuff

   this.myobj_EndInteractionEvt(sender, e);
   if(EndInteractionEvt != null) {
         EndInteractionEvt(sender, e);
   }
}

Upvotes: 1

klugerama
klugerama

Reputation: 3352

myobj_EndInteractionEvt is a method, not an event. Instead of calling myobj_EndInteractionEvt(sender,e); directly, you need to trigger the event that calls it in your main class. So change angleEndInteractionEvt to:

public void angleEndInteractionEvt(vtkObject sender, vtkObjectEventArgs e) {
  //some stuff
  EndInteractionEvt(sender, e);       
}

Upvotes: 1

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