Passing/Evaluating Strings as Executable Code

[Paul Groot]

Hi Jake,

I think you are looking for a solution that is more complex than actually
required. Instead of changing an object property indirectly by changing an
attribute value, why not changing the object property directly?

This is a piece of code that I used in my VAS script to highlight a
selected button:

        Set hitObject = CSlideText(ACK_SlideState.Objects(strHit))
        hitObject.BackColor = CColor("silver")
        hitObject.Draw
        etc...


Best
Paul



On 3 July 2013 18:07, David McFarlane <mcfarla9 at msu.edu> wrote:

> Jake,
>
> I am fairly certain that E-Basic/VBA does not have anything like an eval()
> function.
>
> -----
> David McFarlane
> E-Prime training online:  http://psychology.msu.edu/**
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> Twitter:  @EPrimeMaster (https://twitter.com/**EPrimeMaster<https://twitter.com/EPrimeMaster>
> )
>
>
> At 7/2/2013 01:21 PM Tuesday, Jake wrote:
>
>> Oh, I see why that's not working now, the logic was overwriting the
>> Attribute.
>>
>> Still, it would be good to know if you pass a string as an expression.
>>  I've search the documentation and some VB stuff online, but I haven't seen
>> an eval() like function. Has anyone else used/seen something like that in
>> E-Basic?
>>
>> Thanks,
>> Jake
>>
>>
>> On Tuesday, July 2, 2013 10:32:22 AM UTC-5, Jake wrote:
>>  Dear Group,
>> I'm trying to streamline some of my inline code in a Touch Screen task.
>> Is it possible to pass string values as execuatable pieces of code in
>> E-Basic? I can do this in MATLAB (I think) and R using and eval() function,
>> but is there an analogue in E-Basic?
>>
>> I've tried the following 'for' loop to assign an object border width
>> using the string returned from the HitTest function (Objects are named "R0"
>> through "R7"). I can compile the script fine, but it won't actually change
>> the attribute value for some reason. Perhaps I just need a second set of
>> eyes to point something out.  Any suggestions would be welcomed! Thanks,
>> Jake
>>
>> Set MouseResp = CMouseResponseData(Question.**InputMasks.Responses(1))
>>  Hit = theState.HitTest(MouseResp.**CursorX, MouseResp.CursorY)
>>  Dim i as Integer
>>  Dim theBorder As String
>>  For i = 0 To 7
>>     theBorder = Hit & "BW"
>>     If i = CInt(Mid(Hit,2,1)) Then
>>       c.SetAttrib theBorder,"5"
>>     Else
>>       c.SetAttrib theBorder,"0"
>>     End If
>>  Next
>>
>>
>> --
>> ***************************************************
>> Jacob E. Anderson, MA
>> Scientist @ The Zelazo Lab
>> Institute of Child Development
>> 51 East River Rd.
>> Minneapolis, MN 55455
>>
>
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