ActiveX controls disappear when VI is loaded in a subgroup of experts with the use of the modal to start dialog box

Hello

I have a secondary to a VI (VI1) in which one another VI (VI2) is charged. VI1 is used as a module for an Action step in TestStand. Vi2 has controls ActiveX as ExpressionEdit and Adobe PDF reader etc. VI1 VI2 in charge in a subgroup of experts and calls Dialog.vi Modal start. I put 'Show the front panel when it is called' true to VI1 so that the VI appears when the sequence is executed. During the execution of the sequence and when the VI begin dialog is called VI1, all controls ActiveX VI2 (loaded in the Sub-group of experts) modal disappears. Here is the screenshot of the façade of the VI1 operating sequence:

This problem occurs in TestStand 4.2.1 TestStand 2010 and TestStand 2010 SP1 (for as far as I tested it.) May occur in older versions too). In the attached file, VI1 is 'ExprEdit Test.vi' and VI2 is 'SubpanelLoad.vi '. The sequence attached is developed in TestStand 2010 SP1.

How can you solve this problem?

Thank you

Ganesh Kumar

Hi all

Found the solution to the question . The problem is that the front of the VI in which start Modal Dialog.vi is used should not be open before start Modal Dialog.vi is called. In the files that I have included in my previous post, .vi ExprEdit Test (does not work) had the ability to 'See the façade when it is called' enabled in the properties of VI. It was the origin of the problem. When I disabled this option, all started working well (ActiveX controls do not disappear during the execution of the sequence). I had accidentally turned off in .vi ExprEdit Test (work) that worked. A comprehensive review of the differences between the 2 screws led to find the cause of the problem.

Thank you

Ganesh Kumar

Tags: NI Software

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