Event case not firing

[BillMe]

I took the TDMS File Viewer and made it an Actor. Referencing the screenshot you'll see I have a "Send Groups-Channels" message being sent in the "File Contents" event case. This control is the Tree Control in the left pane. If I select a child in the tree, it should trigger the event. However, when this is running, I can expand/collapse the parent items in the tree but I can't select any of the child items AND the event doesn't fire. I have the Tree Control Selection Mode set to "1 or More", "Highlight Entire Row", and "Limit multi-select to children". The Tree control is ENABLED. Other events in the User Event structure work, e.g, Panel Resize, Panel Close and the Stop Signal.

Any ideas why the Tree Control acts like it's disabled?

[AristosQueue (NI)]

Do other events on the Tree Control itself work, such as a simple Mouse Down? I don't have any ideas, I'm just trying to narrow the scope a bit.

[BillMe]

Yes, for example, I can trigger the "Item Open" event.

[AristosQueue (NI)]

I have no idea then. I've never heard of this.

[BillMe]

Ok, the Selection Mode of the Tree Control was the problem. The TDMS File Viewer doesn't assign the "Child Only" property when populating the tree control with the TDMS channels. So it's necessary to ensure the "Allow Selection of Parent Items" is TRUE.

[AristosQueue (NI)]

Ah.

I both hate it and love it when it turns out to be user error. Not a bug and yet somehow still a problem with our user experience. 🙂