Specifies visual style of expanding and collapsing buttons inside a column.

property ToggleButtonStyle: TNxToggleButtonStyle read GetToggleButtonStyle write SetToggleButtonStyle default tsStyleNative;

If the property is set to tsGlyph, CollapsedImageIndex and ExpandedImageIndex properties should be set.

Value	Appearance
tsStyleNative
tsTriangle
tsSquare
tsGlyph