property Column.HeaderItalic as Boolean

Retrieves or sets the Italic property of the Font object that it is used to paint the column's caption.

TypeDescription
Boolean A boolean expression that indicates whether the column's caption should appear in italic.

Use the HeaderItalic property to specify whether the column's caption should appear in italic. Use the CellItalic or ItemItalic properties to specify whether the the cell or the item should appear in italic. 

For instance, the following sample shows how to bold the entire column, by handling the AddItem event:

Private Sub ExplorerTree1_AddItem(ByVal Group As EXPLORERTREELibCtl.IGroup, ByVal Item As EXPLORERTREELibCtl.HITEM)
    Group.Items.CellBold(Item, 0) = True
End Sub