The form is not resizable to keep the example simple. As New frmVerticalSplitterBar frmNew. This example shows a list box with a short wide picture box over it. The picture box is used as a Master or Sash control in that it gets dragged to change the hight of the list box. List boxes present a particular problem in that they do not keep the height they are assigned.
List boxes snap to the closest height that accomodates an even number of lines.
They do not allow a hight the displays only part of the lower line. When the list box snaps, it's the lower edge that moves which might not be the edge moved by enforcement. So the Resize module shecks both edges for errors and adds the error to a Correction variable. You can see how the Correction variable is used in the CommonDrop procedure. It's used to push the Master control back a bit.