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Thread Unable to get property 'tcontrol_setvisible' of undefined or null reference
Tue, Jul 3 2018 5:35 PMPermanent Link

Mario Enríquez

Open Consult

Hi folks,

I've run into some trouble with an EWB project with one single form.

I'm getting the following message:

'Unable to get property 'tcontrol_setvisible' of undefined or null reference'

I've searched for this error the forum but no solution appears to apply.

When the form is shown everthing is ok, no error shown. As soon as I click on one of the Tabs the error above is display. There is no event code related to this action by the way.

I would really appreciate any help on this subject.

I have an screen shot of the error, and if anyone is interested I could share the project...

Regards,
Mane



Attachments: 003_planificacion.jpg
Wed, Jul 4 2018 5:05 AMPermanent Link

Matthew Jones

Mario Enríquez wrote:

> 'Unable to get property 'tcontrol_setvisible' of undefined or null reference'
>
> I've searched for this error the forum but no solution appears to apply.

Hmm, the solution will be to use the Browser debugging tools. I recommend Chrome, and enable the "pause on handled exceptions" option. Then you will find out exactly where it is failing, and you will go "Duh!" and all will make sense. 8-)


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Matthew Jones
Fri, Jul 6 2018 3:09 PMPermanent Link

Tim Young [Elevate Software]

Elevate Software, Inc.

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Email timyoung@elevatesoft.com

Mario,

<< I've run into some trouble with an EWB project with one single form.

I'm getting the following message:

'Unable to get property 'tcontrol_setvisible' of undefined or null reference'

I've searched for this error the forum but no solution appears to apply.

When the form is shown everthing is ok, no error shown. As soon as I click on one of the Tabs the error above is display. There is no event code related to this action by the way. >>

What you're seeing is simply a reference to a NULL when something is expecting an actual class/object instance.

If you want to email me the project, I can take a look and tell you what's going on.

Tim Young
Elevate Software
www.elevatesoft.com
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