The QLayout class is the base class of geometry specifiers. ... List of all member functions. virtual  ~QLayout  ()  . int  defaultBorder  () const . ... void  freeze  ( int w, int h )  . ... QLayout  ( QWidget * parent, int border, int autoBorder, const char * name )  . ... The concrete layout managers QBoxLayout and QGridLayout inherit from this one and make QLayout's functionality avaialble in friendly APIs. ... freeze (), which allows you to freeze the widget's size and layout. ...