Populating a combobox with a record obtained from a database

[Splatify]

Ok so I have created a record which looks like this:

QSqlRecord( 2 ) 
 " 0:" QSqlField("FileID", int, length: 11, precision: 0, required: yes, generated: yes, typeID: 3) "" 
 " 1:" QSqlField("File_Name", QString, length: 300, precision: 0, required: no, generated: yes, typeID: 253) ""

QSqlRecord( 2 ) 
 " 0:" QSqlField("FileID", int, length: 11, precision: 0, required: yes, generated: yes, typeID: 3) "" 
 " 1:" QSqlField("File_Name", QString, length: 300, precision: 0, required: no, generated: yes, typeID: 253) ""

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How do i go about populating the combo box with each of the values contained within the File_name column? I do not want to use a model! How would I go about sorting the data within this record? Say i wanted to sort the File_name in ascending order, with my quicksort algorithm, how would i apply my algorithm to this record?

Thanks for your time and trouble