[Qt-interest] Problem with getExistingDirectory....Please advise

[Usman Ajmal]

I have a
class Ui_MainWindow : public QMainWindow

It has one public function as below:

void addDirectory() {
    QWidget k;
    QString s = MyFileDialog::getExistingDirectory(this);
    lineEdit->setText(s);}

I want when i click on a a button named Browse, the above function may run.
I am using following LOC for this purpose

QObject::connect(Browse, SIGNAL(clicked()),this , SIGNAL(addDirectory()));

Please suggest what should i write in place of 'this' because the current
code, after compilation gives following error
No such signal QMainWindow::addDirectory()


Many Thanks...
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