qcombobox with multiple columns

[seniorc]

Hello,

I'm trying show QTableView in QComboBox.

Example Department is table in my database.

Query =

SELECT Dep.Code,Dep.Name FROM Dep

and I've tried this my code.

QSqlQueryModel* depModel = new QSqlQueryModel();
depModel->setQuery("SELECT Dep.Code,Dep.Name FROM Dep");
.
.
.
QTableView* cboxTable = new QTableView(this);
cboxTable->setModel(depModel);
QComboBox *courseComboBox = new QComboBox();
courseComboBox->setView(cboxTable);

QSqlQueryModel* depModel = new QSqlQueryModel();
depModel->setQuery("SELECT Dep.Code,Dep.Name FROM Dep");
.
.
.
QTableView* cboxTable = new QTableView(this);
cboxTable->setModel(depModel);
QComboBox *courseComboBox = new QComboBox();
courseComboBox->setView(cboxTable);

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but not work.Where is my problem ? I want see multiple columns.

Here is this problem stackoverflow link