'宣言 Public Function DrawHeaderItem( _ ByVal type As ThemedHeader.HeaderItemType, _ ByRef drawParams As UIElementDrawParams, _ ByVal rect As Rectangle, _ ByVal clipRect As Rectangle, _ ByVal state As UIElementButtonState _ ) As Boolean
public bool DrawHeaderItem( ThemedHeader.HeaderItemType type, ref UIElementDrawParams drawParams, Rectangle rect, Rectangle clipRect, UIElementButtonState state )