Dialog Update before shown

[Lykurg]

where is your sample code inside your application? Maybe you can call update() before executing. But normally a code like that works for me:

void Foo::showDlg()
{
  if(!m_dlg)
    m_dlg = new SubclassedDlg(this);
  m_dlg->setAllValuesToTheirDefault();
  m_dlg->exec();
}

void Foo::showDlg()
{
  if(!m_dlg)
    m_dlg = new SubclassedDlg(this);
  m_dlg->setAllValuesToTheirDefault();
  m_dlg->exec();
}

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without "flashing".