eliding layout
Does someone know how to correctly make a child panes disappear (become invisible) when defining one's own layout? (E.g. using interpret-description, calculate-constraints and calculate-layout). I'm trying to define a simple column layout which can elide sub-panes dynamically. I'm doing this by setting %width% and %height% to 0 in calculate-layout for the panes that I want to make temporarily invisible. This appears to work if the child is a pane, but doesn't work when the child is itself a layout (in which case, the sub-layout remains visible but appears to shrink to its minimum size). I'm trying to build a property sheet gui that contains zillions of properties grouped into "categories" which the user can turn "on" and "off". tia pt ps. I'm doing this because I think that tree-view does not allow children to be layouts or panes. Let me know if I'm wrong, since tree-view has the general functionality that I want.