ui not declared in scope

[steve.bush]

HEADER FILE

#include <QMainWindow>
#include "ui_form.h"
 
class Form1:public QMainWindow
{
Q_OBJECT
public:
	Form1();
	~Form1();
 
protected slots:
        void function1();
}

#include <QMainWindow>
#include "ui_form.h"

class Form1:public QMainWindow
{
Q_OBJECT
public:
	Form1();
	~Form1();

protected slots:
        void function1();
}

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CPP FILE

#include "form1.h"
#include <QDebug>
#include <QFile>
#include <QTextStream>
#include <QTimer>
#include <QDialog>
#include <QMessageBox>
#include <QStringListModel>
 
Form1::Form1():QMainWindow(NULL,0)
{
       connect(ui.action_button, SIGNAL(clicked()), this, SLOT(function1()));
}
 
void Form1::function1()
{
}
 
Form1::~Form1()
{
}

#include "form1.h"
#include <QDebug>
#include <QFile>
#include <QTextStream>
#include <QTimer>
#include <QDialog>
#include <QMessageBox>
#include <QStringListModel>

Form1::Form1():QMainWindow(NULL,0)
{
       connect(ui.action_button, SIGNAL(clicked()), this, SLOT(function1()));
}

void Form1::function1()
{
}

Form1::~Form1()
{
}

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Error is on line 12 in the CPP file.

[squidge]

So on what line of what file are you getting that error? We can't read minds.

[steve.bush]

So on what line of what file are you getting that error? We can't read minds.

Line 12 .

[Zlatomir]

That is most likely because you don't have a ui member object or pointer or not inheriting from the ui auto-generated class.

See here the methods for using ui in the cpp file (i recommend the private member or pointer <don't forget to new the ui* if you use a pointer>)

[Gokulnathvc]

Form1::Form1():QMainWindow(NULL,0)

It should be like this.....
ui(new Ui::QtMySql)

[Zlatomir]

@Gokulnathvc: the only problem with the line you pointed to is that is doesn't take a parent and pass is to the QMainWindow constructor:

Form1::Form1(QWidget* parent = 0) : QMainWindow(parent, 0)

Form1::Form1(QWidget* parent = 0) : QMainWindow(parent, 0)

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@Steve: the main problem is that he forgot to integrate the generated code, he only included the header ui_form.h:

#include "ui_form.h"
 
class Form1:public QMainWindow
{
Q_OBJECT
public:
	Form1();
	~Form1();
 
protected slots:
        void function1();
//this needs to be added:
private:
        Ui_Form ui; //object or pointer whatever you prefer
//      or you can use the class from Ui nanespace:
//      Ui::Form ui; 
//      read the documentation page linked in my previous post
}

#include "ui_form.h"

class Form1:public QMainWindow
{
Q_OBJECT
public:
	Form1();
	~Form1();

protected slots:
        void function1();
//this needs to be added:
private:
        Ui_Form ui; //object or pointer whatever you prefer
//      or you can use the class from Ui nanespace:
//      Ui::Form ui; 
//      read the documentation page linked in my previous post
}

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