How to add Buttons in QDialog ?

[npc]

Hi,

I created a Dialog using Qt 3.3.7, now I want to add buttons and labels.

When I tried to add like this..

QDialog *dlg = new QDialog(0,"title");
dlg->setCaption( QDialog::tr( "Caption" ) );
QLabel* lbl = new QLabel("Test Label",dlg);
QPushButton* btn = new QPushButton("&press",dlg);
QPushButton* btn1 = new QPushButton("e&xit",dlg);

QDialog *dlg = new QDialog(0,"title");
dlg->setCaption( QDialog::tr( "Caption" ) );
QLabel* lbl = new QLabel("Test Label",dlg);
QPushButton* btn = new QPushButton("&press",dlg);
QPushButton* btn1 = new QPushButton("e&xit",dlg);

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It overwrites the properties.

What is the correct way to do this?

Thanks,
*npc*