public interface FrozenFields
 Fields can be programmatically frozen via setting
 field.frozen to true when the
 grid is created, or dynamically frozen and unfrozen via freezeField() and unfreezeField(). The setting canFreezeFields enables a user
 interface to allow end users to dynamically freeze and unfreeze fields. 
The frozen fields feature is not compatible with the following features:
AutoFitData:"horizontal", as well as headers that autoFit to titles  
 (normally enabled via field.overflow:"visible") CubeGrid subclass of ListGrid TreeGrid subclass of ListGrid, and all dynamic
 styling-related and formatting-related features.  The ListGrid.frozenFieldsMaxWidth property may be used to specify a maximum size for the frozen
 fields. If their combined width exceeds this, a  horizontal scrollbar will be displayed,
 allowing the user to scroll the frozen fields independently of the other fields in the grid.
 
Troubleshooting tip: If you encounter misalignment between rows in frozen and unfrozen columns, this is likely due to one of the following causes:
fixedRecordHeights:true, the cell contents,     inclusive of border and padding, needs to be
 less than your configured      ListGrid.cellHeight, or you need to set ListGrid.enforceVClipping to
 cause us      to clip it as necessary. Breaking this rule can cause misalignment between rows
 in     frozen and unfrozen columns as some fields have cells with taller content.     (This
 does not apply for grids with fixedRecordHeights set to false). ListGridField.getAutoFreezePosition(), 
ListGrid.freezeField(com.smartgwt.client.widgets.grid.ListGridField), 
ListGrid.unfreezeField(com.smartgwt.client.widgets.grid.ListGridField), 
com.smartgwt.client.widgets.grid.ListGrid#toggleFrozen, 
ListGridField.getFrozen(), 
ListGridField.getCanFreeze(), 
ListGridField.getAutoFreeze(), 
ListGrid.getFrozenBaseStyle(), 
ListGrid.getShrinkForFreeze(), 
ListGrid.getFrozenHeaderBaseStyle(), 
ListGrid.getFrozenHeaderTitleStyle(), 
ListGrid.getCanFreezeFields()