Check if an app is active, use AVar()

[salvomic]

(07-18-2015 08:59 PM)StephenG1CMZ Wrote:  Could you use IFERR?

yes Stephen,
using IFERR, this seems to work (but...)

Code:


    IFERR EXPR("Astro_Lab_4()") THEN temp:=0; // change nothing 
    ELSE
        temp:= breviplanet(nameplanet);
        temp2:= EVAL(Astro_Lab_4.PlanetCoordinates({EVAL(temp),lista}));
        lapp:= temp2(1);
        b:= temp2(2);
        R:= temp2(3);
    END;

It executes the 5 lines if Atro Lab is active, and changing the IFERR line like
IFERR EXPR("Astro_Lab_4xxxxxx()") THEN temp:=0; // change nothing
it executes ...nothing, as expected.

But if Astro Lab 4 is not active I got always the "unmatch control word" error: I don't understand from where it comes...

However now with IFERR we can control if the syntax is ok, but not still *if* the app there is or it's active.

Salvo