BSizeColumn
class BSizeColumn : public BTitledColumn
BSizeColumn(const char* title, float width,
fListView->AddColumn(new BSizeColumn("Size", width, 10, 100), 4);
BSizeColumn::BSizeColumn(const char* title, float width, float minWidth,
BSizeColumn::DrawField(BField* _field, BRect rect, BView* parent)
BSizeColumn::CompareFields(BField* field1, BField* field2)