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Custom Tool Env Variable Access

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I have created a custom Tool and registered it in $CDSHOME/tools/dfII/etc/tools. I have a large form that I want to read and write env varibles to/from it's fields. So far I have been successful reading default values into the form using envGetVal, a very brute force approach. How do I automatically update env variables upon changes to the form fields? I have tried callbacks using envSetVal however I get loading errors passing current values of a field when the form has not been created yet. Any ideas or an easier way to do any of this would be great help! Thank you, Dale


Originally posted in cdnusers.org by jbj008
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    I'm a little confused when you say the callbacks are failing when the form has not yet been created? How come your callbacks are running before your form is created? When I have done this for my forms, I set the form fields this way:

    field1= list(hiCreateBooleanButton(
    ?name 'fieldName
    ?value envGetVal("customTool" "varName")
    ?buttonText "My Button Text:")
    0:0 100:30 0)

    Then my callback for the form sets all the variables using envSetVal. I could put a callback for each field if I wanted to. In either case, though, my form already exists before a callback is ever invoked.

    -Derek


    Originally posted in cdnusers.org by dmay
  • archive

    I don't understand either - but perhaps hiInstantiateForm() is needed?

    Regards,

    Andrew.


    Originally posted in cdnusers.org by adbeckett

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