How do I write the QLineEdit value to a variable?

• 0
  The following files attempt to implement a user authorization dialog in the database:
  autorization.h
  

  #ifndef AUTORIZATION_H
  #define AUTORIZATION_H
  
  #include <QWidget>
  
  namespace Ui {
  class Autorization;
  }
  
  class Autorization : public QWidget
  {
      Q_OBJECT
  
  public:
      explicit Autorization(QWidget *parent = 0);
      ~Autorization();
  
  private slots:
  
  void on_autorizOK_clicked();
  
  private:
      Ui::Autorization *ui;
  };
  
  #endif // AUTORIZATION_H

  
  autorization.cpp
  

  #include "autorization.h"
  #include "ui_autorization.h"
  #include "autorization.h"
  #include <QtSql/QSqlQuery>
  #include <QSqlDatabase>
  #include <QDebug>
  #include <QSqlError>
  #include "QString"
  
  Autorization::Autorization(QWidget *parent) :
      QWidget(parent),
      ui(new Ui::Autorization)
  {
      ui->setupUi(this);
  
  }
  
  Autorization::~Autorization()
  {
      delete ui;
  }
  
  void on_autorisOK_clicked()
  
  {
      QString userName = autorizUser->text();
      QString userPass = autorizPass->text();
  }

  
  
  The autorization.h file contains a slot for accepting a signal from the "OK" button of the screen form: void on_autorizOK_clicked () ;. The autorization.cpp file contains a function that is executed when a slot is triggered, which must create 2 QString objects - userName and userPass and assign them the values ​​of the autorizUser and autorizPass fields, respectively. After that, it is planned to use variables as username and password when calling db.setUserName and db.setPassword. But building this code produces 2 errors: autorizUser / autorizPass was not declared in this scope.
  Am I correctly translating the error into Russian - "Variables are not declared within the procedure"? On the screen, the names of the QLineEdit objects are exactly the same as in the cpp code. How to solve this problem?

  C++ Nathan Rich, Aug 4, 2019

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4 Answers
• 0
  Solved the problem this way:
  
  It was
  

  void on_autorisOK_clicked()
  
  
  
  {
  
      QString userName = autorizUser->text();
  
      QString userPass = autorizPass->text();
  
  }

  
  
  Now
  

  void Autorization::on_autorizOK_clicked()
  
  {
  
      QString userName = ui->autorizUser->text();
  
      QString userPass = ui->autorizPass->text();
  
  
  
  }

  Anonymous

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• 0
  Try this.
  
  void on_autorisOK_clicked ()
  
  
  {
  
  QString userName = ui- & gt; autorizUser- & gt; text ();
  
  QString userPass = ui- & gt; autorizPass- & gt; text ();
  
  }

  Anonymous

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• 0
  If you have an on_autorisOK_clicked () slot (below in the text, by the way, a different name), then it should be in the class, and not just like that. Further, the gui is accessed via ui.element_name- & gt; ...

  Anonymous

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• 0

  void Autorization::on_autorisOK_clicked()
  
  {
  
      QString userName = ui->autorizUser->text();
  
      QString userPass = ui->autorizPass->text();
  
  }

  
  
  Tip: first understand at least the basics of OOP in C ++, and then start working with Qt.

  Anonymous

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