Hi. I've got some annoying errors which appear in my Dialog.cpp file:
Qt Code: 
  1. #include <QtGui>
  2.  
  3. #include "Dialog.h"
  4.  
  5.  
  6.  
  7.  
  8. Dialog::Dialog(QWidget *parent)
  9.      : QDialog(parent)
  10.  {
  11.      ui.setupUi(this);
  12.  
  13.      fromLineEdit->hide();
  14.      fromLabel->hide();
  15.      whiteLabel->hide();
  16.      toLabel->hide();
  17.      convertButton->hide();
  18.      exitButton_2->hide();
  19.  
  20.  
  21.      connect(nextStepButton, SIGNAL(clicked()), this, SLOT(settingUp()));
  22.  
  23.      }
  24.  
  25.  
  26.  
  27.      bool Dialog::settingUp()
  28.      {
  29.           if (beaufortBox->isChecked() && beaufortBox_2->isChecked())
  30.           {
  31.                                    int ret = QMessageBox::information(this, tr("Speed Units Converter"),
  32.                    tr("You can't convert value to the same unit"),
  33.                    QMessageBox::Ok | QMessageBox::Default);
  34.                    if (ret == QMessageBox::Ok)
  35.                    {
  36.                    return false;
  37.                    }
  38.  
  39.           }
  40.  
  41.           // And few other which look almost the same
  42.  
  43.  
  44.  
  45.           if (beaufortBox->isChecked() && knotBox_2->isChecked())
  46.           {
  47.                                Dialog->setWindowTitle("Converting value from Beaufort to Knot");
  48.                                toLabel->setText("Knot(s)");
  49.                                 fromLineEdit->hide();
  50.      fromLabel->setVisible(bool);
  51.      whiteLabel->setVisible(bool);
  52.      toLabel->setVisible(bool);
  53.      convertButton->setVisible(bool);
  54.      exitButton_2->setVisible(bool);                             
  55.           }
  56.  
  57.           if (beaufortBox->isChecked() && mpsBox_2->isChecked())
  58.           {
  59.                                Dialog->setWindowTitle("Converting value from Beaufort to Mps");
  60.  
  61.                                fromLabel->setVisible(bool);
  62.      whiteLabel->setVisible(bool);
  63.      toLabel->setVisible(bool);
  64.      convertButton->setVisible(bool);
  65.      exitButton_2->setVisible(bool);                             
  66.           }
  67.  
  68.           // And others which look almost the same
  69.  
  70.  
  71.  
  72.  
  73.  
  74.       }
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Errors are the same for each if instruction (exeptions are first if's which return false):
In member function bool Dialog::settingUp()
expected primary expression before "bool"
expected primary expression before -> token

I've got much this kind of errors, only the line which the error appears its different. When I was trying to do setVisible() instead of setVisible(bool) I reached errors that candidates are setVisible(bool) and a few others about setVisible()