Using ButtonControl function inside another function

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Hello all,
 

Is it possible to use a ButtonControl function, in a standalone way, inside another function. For example, below is a function linked to a button in a panel.

Function SimpleButtonFunc (s): ButtonControl
    String s
   
    SVAR pa = root:parameter_a
    SVAR pb = root:parameter_b
   
    print pa + pb

end

 

We wonder if it can be used inside another function as,

Function AnotherFunction ()
   
    // some calculations here
   
    SimpleButtonFunc()              // does not work

    // or
    string tmp
    SimpleButtonFunc( tmp )    // does not work !

end

Above example does not work. Is there another way to have such functionality.

Thanks.

First, I cannot at all recommend that you call such a control function somewhere else in your code. This is not the way to do it. Instead, you would want to write a dedicated function which does what you want and then call this function from both your button control and somewhere else in your code, e.g.:

Function SimpleButtonFunc (ctrlName): ButtonControl
    String ctrlName
    doTask()
    return 0
End

Function doTask()
    SVAR pa = root:parameter_a
    SVAR pb = root:parameter_b
    print pa + pb
End

I also recommend to use the newer structure-based control functions:

Function MyButton(s) : ButtonControl
    STRUCT WMButtonAction &s
    if (s.eventCode == 2)   // button clicked
        doTask()
    endif
    return 0
End

But if you absolutely have to, you can call a simple (not structure-based) control function just fine by passing nothing for the string input (this obviously does not work if the control name is used in you button function):

SimpleButtonFunc("")

Your above example does not work simply because your input string 'tmp' is not properly initialized:

Function AnotherFunction()
    string tmp = ""
    SimpleButtonFunc(tmp)
End

 

May 23, 2023 at 08:29 pm - Permalink