QFileDialog problem

[jpoz]

hi
i have a problem on QFileDialog,i want to save data from QTableWidget ,here is my function for saving but i am getting error!Please help me on this...

void AddressBook::on_actionSave_triggered()
 {
 
     QString fileName = QFileDialog::getSaveFileName(
        this );
 
     if (!fileName.isEmpty()) {
        tableWidget->writeToFile(fileName);
     }
 }

void AddressBook::on_actionSave_triggered()
 {

     QString fileName = QFileDialog::getSaveFileName(
        this );

     if (!fileName.isEmpty()) {
        tableWidget->writeToFile(fileName);
     }
 }

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error

addressbook.cpp: In member function ‘void AddressBook::on_actionSave_triggered()’:
addressbook.cpp:78: error: ‘class QTableWidget’ has no member named ‘writeToFile’
make[1]: *** [debug/addressbook.o] Error 1

addressbook.cpp: In member function ‘void AddressBook::on_actionSave_triggered()’:
addressbook.cpp:78: error: ‘class QTableWidget’ has no member named ‘writeToFile’
make[1]: *** [debug/addressbook.o] Error 1

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