By default, the BackColorPropertyLevelHeader property is the same as the control's BackColorHeader property. Use the BackColorLevelHeader property to specify a background color for parts of the control's header that are not occupied by the column's headers. The BackColorLevelHeader property has effect only if there are two or more neighbor columns with the same non empty level key. Use the LevelKey property to specify the control's level key. The HeaderHeight property indicates the height in pixels of a single level in the control's header bar. Use the PictureLevelHeader property to specify a picture being displayed on the multiple levels header bar.