static int showForm_defaultGap = 4;
static int showForm_gapBetweenColumns = 10;

static JPanel showFormTitled(fS title, fO... _parts) {
  ret swing(func -> JPanel {
    final new Var<JFrame> frame;
    JPanel panel = showForm_makePanel(frame, _parts);
    frame.set(showForm_makeFrame(title, panel));
    ret panel;
  });
}

static JPanel showForm_makePanel(final Var<JFrame> frame, O... _parts) {
  L<JComponent> out = showForm_arrange1(showForm_makeComponents(frame, _parts));
  ret vstackWithSpacing(out, showForm_defaultGap);
}