Tree Components
The optional row/column header is available if both row headers and column headers are available. Row headers are made visible using SetShowRowHeader. ShowHeader is used to make column headers visible.
The row/column header can be shown as a labeled button or just a title. The SetShowRowColHeaderButton function defines the row/column header's display style. The row/column header or button label may be left or right justified or centered within the row/column header area boundaries. The SetRowColHeaderStyle function defines the position of the text displayed in the row/column header.
The row/column header can contain a single or multiple lines of text and a picture (see SetRowColText and SetRowColPicture).