Is a part of the tree of his own brothers and sisters?

I have a routine that takes an item in the tree selected by a user and loop through all brothers and sisters of the element:

itemRelated = TRUE;treeItemToTest = 0;

while ((itemRelated) && (treeItemToTest < totalTreeItems) &&     (treeItemToTest >= 0))
{
    /* Check if file is related to the selected file */
    AreTreeItemsRelated(panelHandle, treeHandle,
        treeItemToTest, VAL_SIBLING, selectedTreeIndex,
        &itemRelated);

    if (itemRelated)
    {
        /* process the item */
        /* ... */

        ++treeItemToTest;
    }
}

Somewhere between the current version and CVI 2012, our program has stopped working properly.  I traced the problem to the call of AreTreeItemsRelated in this routine.  In the latest version of LabWindows, this call returns FALSE if treeItemToTest and selectedTreeIndex are from the same point.  This is apparently a change in behavior of CVI, 2012, but it is not documented in the help of the function.  This change was deliberate?

Yes. You are right. You have run into a scenario that can be very difficult to work around. We try very hard to never break compatibility with older versions of the execution, but sometimes it's inevitable, as in cases like this where a bug is fixed in a new version. Problems occur when there are existing programs which are assuming the existence of this bug and would actually break if it were not for the bug.

The best way to avoid this situation is to use a specific flavour to the version of the runtime of the CVI. It has its drawbacks, of course (for example not automatically benefit from bug fixes in the run-time), but he could sure complicated deployment.

Of course, who isn't really help you now, since your 'program #1' is already deployed using shared execution. Having said that, the best you can do is to replace it, what you can do without uninstalling all of its dependencies, by following these steps.

Luis

Tags: NI Software

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