Error's including a Read Function in mainwindow

RIVOPICO

Hello i'm including a Read Function to read my resource file but when i do this the function is not recognized.
My file.pro:

QT       += core gui
QT += testlib

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = untitled2
TEMPLATE = app

SOURCES += main.cpp\
        mainwindow.cpp

HEADERS  += mainwindow.h \
    resource.h

FORMS    += mainwindow.ui

RESOURCES += \
    myfiles.qrc

mainwindow.cpp:

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <iostream>
#include <QProcess>
#include <QtTest>
#include <QString>
#include <QStringList>
using namespace std;

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
 ui->setupUi(this);
Read(":/MyFiles/MyAlias");
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::Read(QString Filename)
{
    QFile mFile(Filename);

    if(!mFile.open(QFile::ReadOnly | QFile::Text))
    {
        qDebug() << "could not open file for reading";
        return;
    }

    QTextStream in(&mFile);
    QString mText = in.readAll();

    qDebug() << mText;

    mFile.close();
}

mainwindow.h:

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();

public slots:
    void Read();

private:
    Ui::MainWindow *ui;
};

#endif // MAINWINDOW_H

The errors i get:

error: no matching function for call to 'MainWindow::Read(const char [16])'
    Read(":/MyFiles/MyAlias");
                          ^
mainwindow.cpp:42: error: prototype for 'void MainWindow::Read(QString)' does not match any in class 'MainWindow'
void MainWindow::Read(QString Filename)
     ^
mainwindow.h:19: error: candidate is: void MainWindow::Read()
    void Read();
         ^

Thanks again!

? Offline

Your function's signatures in its declaration and definition don't match:

public slots:
    void Read();

void MainWindow::Read(QString Filename)
{

RIVOPICO

@Wieland said in Error's including a Read Function in mainwindow:

void MainWindow::Read(QString Filename)
{

i did that but not seems to work.
what does it mean this errors?

In file included from C:/Qt/Qt5.7.0/5.7/mingw53_32/include/QtCore/QtCore:13:0,
                 from C:/Qt/Qt5.7.0/5.7/mingw53_32/include/QtTest/QtTestDepends:3,
                 from C:/Qt/Qt5.7.0/5.7/mingw53_32/include/QtTest/QtTest:3,
                 from ..\untitled2\mainwindow.cpp:6:
C:/Qt/Qt5.7.0/5.7/mingw53_32/include/QtCore/qendian.h:53:0: warning: "QT_HAS_BUILTIN" redefined
 #  define QT_HAS_BUILTIN(x)     __has_builtin(x)
 ^
In file included from C:/Qt/Qt5.7.0/5.7/mingw53_32/include/QtCore/qglobal.h:83:0,
                 from C:/Qt/Qt5.7.0/5.7/mingw53_32/include/QtGui/qwindowdefs.h:43,
                 from C:/Qt/Qt5.7.0/5.7/mingw53_32/include/QtWidgets/qwidget.h:43,
                 from C:/Qt/Qt5.7.0/5.7/mingw53_32/include/QtWidgets/qmainwindow.h:43,
                 from C:/Qt/Qt5.7.0/5.7/mingw53_32/include/QtWidgets/QMainWindow:1,
                 from ..\untitled2\mainwindow.h:4,
                 from ..\untitled2\mainwindow.cpp:1:
C:/Qt/Qt5.7.0/5.7/mingw53_32/include/QtCore/qcompilerdetection.h:1209:0: note: this is the location of the previous definition
 #  define QT_HAS_BUILTIN(x)             0
 ^
..\untitled2\mainwindow.cpp: In constructor 'MainWindow::MainWindow(QWidget*)':
..\untitled2\mainwindow.cpp:31:27: error: no matching function for call to 'MainWindow::Read(const char [16])'
     Read(":/MyFiles/MyAlias");
                           ^
In file included from ..\untitled2\mainwindow.cpp:1:0:
..\untitled2\mainwindow.h:19:10: note: candidate: void MainWindow::Read()
     void Read();
          ^
..\untitled2\mainwindow.h:19:10: note:   candidate expects 0 arguments, 1 provided
..\untitled2\mainwindow.cpp:27:12: warning: unused variable 'lpc' [-Wunused-variable]
     LPCSTR lpc = cadena.c_str();
            ^
..\untitled2\mainwindow.cpp: At global scope:
..\untitled2\mainwindow.cpp:42:6: error: prototype for 'void MainWindow::Read(QString)' does not match any in class 'MainWindow'
 void MainWindow::Read(QString Filename)
      ^
In file included from ..\untitled2\mainwindow.cpp:1:0:
..\untitled2\mainwindow.h:19:10: error: candidate is: void MainWindow::Read()
     void Read();
          ^

Now show me:

mainwindow.cpp:31: error: C2660: 'MainWindow::Reading' : the function doesnt accept 1 argument

But i specified one argument i dont know why this message.

dheerendra

Looks like some syntax issue you are hitting. Can you paste reading() function signature? Also how r you calling that function ? Better you paste your complete code ?

jsulm

@RIVOPICO What is "MainWindow::Reading"? Wasn't the name of the method "MainWindow::Read" before?
This is really basic:

// In header file
public slots:
    void Read(QString);

// in cpp file
void MainWindow::Read(QString Filename)
{...}