Mike,
Good point and that is the approach I took. However, there is a subVI in the panel resize event. The subVI is panelResize.vi. As one of its inputs, it takes a cluster of references to the original controls. Those control references are specific control references in the subVI. As previously mentioned, that subVI is locked because it used an unreleased node.
The bottom line is that panel resizing is not easy to accomplish. One workaround I tried was to customize a TDMS viewer with the example code using a vertical splitter bar. When I put the original controls of the TDMS Viewer on the right of a splitter pane, it does not resize correctly as the demonstration is to highlight viewing TDMS files, not exposing NI's secrets of resizing (and other engimatic codes 😉
This is an interesting thread as I did not see an easy way to have a user view graphs of data with upto three signals, one signal per graph. One solution is three separate subVI's inserted into a subpanel.
On a side note, the cluster of references input to the panelResize.VI is restrictive in that specific control classes are used in a locked subVI. NI has builtin ability to use less-specific control classes, such as WaveChart reference instead of a WaveformGraph or a WaveformChart or an XYChart.
