Yes, derived from CrhRdkExpandingSection.
So in the SampleOptionListCtrl, rather than adding it to the SampleOpenListCtrlDlg, I add it to a Section. And it appears - but the Section themselves aren’t resized.
// Create the holder.
m_pHolder->Create(_T(""), m_rectHolder, this);
// Create section 1 and attach it to the holder.
CLightUpOptionsSection1* pSection1 = new CLightUpOptionsSection1;
pSection1->m_caption = ON_wString(“Preferences”);
m_options_list.SetBorders( 0, 0, 0, 0 );
if( m_options_list.CreateOptionsList(pSection1, WS_VISIBLE | WS_CHILD, m_rectHolder) )
Its just not clear to me how you mix CRhinoUI elements and CRhRdk elements. Are they meant to work together?
I tried adding the Section to the m_Resize ItemResizer but it didn’t do anything - again is it because ItemResizer only works with CRhinoUI elements?