Hi everybody.
My question is this :
I've a dialog, with buttons and a textedit. I want to set visible/hidden the textedit. The code is this :
Qt Code: 
  1. ...
  2.     bigEditor = new QTextEdit;
  3.     bigEditor->setPlainText(QDir::currentPath ());
  4.     bigEditor->setFont(QFont("Courier", 15, QFont::Bold));
  5.  
  6.     quitButton = new QPushButton(tr("&Quit"));
  7.     quitButton->setDefault(true);
  8.  
  9.     moreButton = new QPushButton(tr("&More"));
  10.     moreButton->setCheckable(true);
  11.     moreButton->setAutoDefault(false);
  12.  
  13.     buttonBox = new QDialogButtonBox(Qt::Horizontal);
  14.     buttonBox->addButton(quitButton, QDialogButtonBox::ActionRole);
  15.     buttonBox->addButton(moreButton, QDialogButtonBox::ActionRole);
  16.  
  17.     connect(moreButton, SIGNAL(clicked()), this, SLOT(Visualizza()));
  18.     connect(quitButton, SIGNAL(clicked()), this, SLOT(accept()));
  19.  
  20.     extension = new QWidget;
  21.     QVBoxLayout *extensionLayout = new QVBoxLayout;
  22.     extensionLayout->setMargin(10);
  23.     extensionLayout->addWidget(bigEditor);
  24.     extension->setLayout(extensionLayout);
  25.     extension->hide();
  26.  
  27.     QVBoxLayout *mainLayout = new QVBoxLayout;
  28.     mainLayout->addWidget(horizontalGroupBox);
  29.     mainLayout->addWidget(buttonBox);
  30.     mainLayout->addWidget(extension);
  31.     setLayout(mainLayout);
  32.  
  33. ....
  34. void Dialog::Visualizza()
  35. {
  36.     bool stato = extension->isHidden();
  37.     bigEditor->append( "VISUALIZZATO" );
  38. switch (stato)
  39. {
  40. case true:
  41.     extension->show();
  42.     bigEditor->setVisible(true);
  43. case false:
  44.     extension->hide();
  45.     bigEditor->setVisible(false);
  46. }
  47. }
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I've posted only the code I tks is important the last code it's for making the rest of Dialog. If is intresting I can post it.