How can my EA determine if a certain indicator is installed on the chart?

[Deleted]  

Let's say the indicator is named "ABC_ABC".

What Expert Advisor code will test to see that the indicator "ABC_ABC" is really installed on the chart?

NOTE Maybe I could put some kind of special question/response code into my custom indicator -- but I'm not sure what that code would look like.

Thanks in advance for your help. Have some fun today.

Alexander
2441
Alexander  

It isn't necessary for EA to have an indicator on a chart. It is enough to have it in "Indicator" folder.

Ray
2646
Ray  
int WindowFind( string name)