Method OnColumnClick

WinArk/VirtualListView.h:213–258

	}

	LRESULT OnColumnClick(int /*idCtrl*/, LPNMHDR hdr, BOOL& /*bHandled*/) {
		auto lv = (NMLISTVIEW*)hdr;
		// auto col = lv->iSubItem;
		auto col = GetRealColumn(hdr->hwndFrom, lv->iSubItem);

		auto p = static_cast<T*>(this);
		if (!p->IsSortable(hdr->hwndFrom,col))
			return 0;

		auto si = FindById(hdr->idFrom);
		if (si == nullptr) {
			SortInfo s;
			s.hWnd = hdr->hwndFrom;
			s.Id = hdr->idFrom;
			m_Controls.push_back(s);
			si = m_Controls.data() + m_Controls.size() - 1;
		}

		auto oldSortColumn = si->SortColumn;
		if (col == si->SortColumn)
			si->SortAscending = !si->SortAscending;
		else {
			si->SortColumn = col;
			si->SortAscending = true;
		}

		HDITEM h;
		h.mask = HDI_FORMAT;
		CListViewCtrl list(hdr->hwndFrom);
		auto header = list.GetHeader();
		header.GetItem(si->SortColumn, &h);
		h.fmt = (h.fmt & HDF_JUSTIFYMASK) | HDF_STRING | (si->SortAscending ? HDF_SORTUP : HDF_SORTDOWN);
		header.SetItem(si->SortColumn, &h);

		if (oldSortColumn >= 0 && oldSortColumn != si->SortColumn) {
			h.mask = HDI_FORMAT;
			header.GetItem(oldSortColumn, &h);
			h.fmt = (h.fmt & HDF_JUSTIFYMASK) | HDF_STRING;
			header.SetItem(oldSortColumn, &h);
		}

		static_cast<T*>(this)->DoSort(si);
		list.RedrawItems(list.GetTopIndex(), list.GetTopIndex() + list.GetCountPerPage());

		return 0;
	}

	LRESULT OnFindItem(int /*idCtrl*/, LPNMHDR hdr, BOOL& /*bHandled*/) {
		auto fi = (NMLVFINDITEM*)hdr;