Problèmes avec QNetworkRequest : undefined reference to `QNetworkRequest::QNetworkRequest()

Futuray Programming

Salut !
Je cherche à me connecter à un serveur avec mon programme Qt et mon code sort :

/.../main/mainwindow.cpp:72: erreur : undefined reference to `QNetworkRequest::QNetworkRequest(QUrl const&)'

Or, j'utilise CMake et sur internet, on ne trouve que des réponses pour les fichiers .pro.
Merci d'avance pour votre aide !!!

PS : voici mon code

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QWidget>
#include <QSpacerItem>
#include <QLabel>
#include <QVBoxLayout>
#include <QLineEdit>
#include <QPushButton>

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

    public:
        MainWindow(QWidget *parent = nullptr);
        ~MainWindow();

    public slots:
        void SetNetworksParameters();

        void Login();

    private:
        Ui::MainWindow *ui;
        QWidget* MainLoginWindowWidget;
        QVBoxLayout* MainLoginWindowLayout;
        QSpacerItem* MainLoginWindowTopSpacer;
        QSpacerItem* MainLoginWindowAfterTitleSpacer;
        QSpacerItem* MainLoginWindowAfterLineEditNameSpacer;
        QSpacerItem* MainLoginWindowAfterLineEditPassCodeSpacer;
        QSpacerItem* MainLoginWindowButtomSpacer;
        QLabel* MainLoginWindowTitleLabel;
        QLineEdit* MainLoginWindowLineEditName;
        QLineEdit* MainLoginWindowLineEditPassCode;
        QPushButton* MainLoginWindowButtonLogin;
};
#endif // MAINWINDOW_H

et

//mainwindow.cpp
#include "mainwindow.h"
#include "./ui_mainwindow.h"
#include <QTextStream>
#include <QFile>
#include <QMessageBox>

#include <QtNetwork/QtNetwork>
#include <QtNetwork/QNetworkReply>
#include <QtNetwork/QNetworkAccessManager>
#include <QtNetwork/QNetworkRequest>
#include <QUrl>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    MainLoginWindowWidget = new QWidget(this);
    MainLoginWindowLayout = new QVBoxLayout(MainLoginWindowWidget);
    MainLoginWindowTopSpacer = new QSpacerItem(160, 100);
    MainLoginWindowAfterTitleSpacer = new QSpacerItem(160, 50);
    MainLoginWindowAfterLineEditNameSpacer = new QSpacerItem(160, 20);
    MainLoginWindowAfterLineEditPassCodeSpacer = new QSpacerItem(160, 20);
    MainLoginWindowButtomSpacer = new QSpacerItem(160, 40);
    MainLoginWindowTitleLabel = new QLabel("Connecte toi :");
    MainLoginWindowLineEditName = new QLineEdit();
    MainLoginWindowLineEditPassCode = new QLineEdit();
    MainLoginWindowButtonLogin = new QPushButton("Se connecter");

    MainLoginWindowLayout->setAlignment(Qt::AlignTop);

    QFile MainLoginWindowStyleSheetFile(":/styles/mainloginwindow.qss");
    MainLoginWindowStyleSheetFile.open(QIODevice::ReadOnly);
    QTextStream MainLoginWindowStyleSheetTextStream(&MainLoginWindowStyleSheetFile);
    QString MainLoginWindowStyleSheetString = MainLoginWindowStyleSheetTextStream.readAll();
    MainLoginWindowStyleSheetFile.close();

    MainLoginWindowWidget->setStyleSheet(MainLoginWindowStyleSheetString);
    MainLoginWindowTitleLabel->setStyleSheet(MainLoginWindowStyleSheetString);
    MainLoginWindowLineEditName->setStyleSheet(MainLoginWindowStyleSheetString);
    MainLoginWindowLineEditPassCode->setStyleSheet(MainLoginWindowStyleSheetString);
    MainLoginWindowButtonLogin->setStyleSheet(MainLoginWindowStyleSheetString);

    MainLoginWindowLayout->addSpacerItem(MainLoginWindowTopSpacer);
    MainLoginWindowLayout->addWidget(MainLoginWindowTitleLabel, 0, Qt::AlignHCenter);
    MainLoginWindowLayout->addSpacerItem(MainLoginWindowAfterTitleSpacer);
    MainLoginWindowLayout->addWidget(MainLoginWindowLineEditName, 0, Qt::AlignHCenter);
    MainLoginWindowLayout->addSpacerItem(MainLoginWindowAfterLineEditNameSpacer);
    MainLoginWindowLayout->addWidget(MainLoginWindowLineEditPassCode, 0, Qt::AlignHCenter);
    MainLoginWindowLayout->addSpacerItem(MainLoginWindowAfterLineEditPassCodeSpacer);
    MainLoginWindowLayout->addWidget(MainLoginWindowButtonLogin, 0, Qt::AlignHCenter);
    MainLoginWindowLayout->addSpacerItem(MainLoginWindowButtomSpacer);

    connect(MainLoginWindowButtonLogin, SIGNAL(clicked()), this, SLOT(Login()));

    this->setCentralWidget(MainLoginWindowWidget);
}

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

void MainWindow::SetNetworksParameters() {
    MainLoginWindowButtonLogin->setEnabled(false);
    QFile UrlFile(":/texts/url.txt");
    UrlFile.open(QIODevice::ReadOnly);
    QTextStream UrlTextStream(&UrlFile);
    UrlFile.close();
    QString UrlString = UrlTextStream.readAll();
    const QUrl MainServerUrl = QUrl(UrlString);
    QNetworkRequest MainServerQuery(MainServerUrl);

    QNetworkAccessManager *m = new QNetworkAccessManager(this);
    QNetworkReply *r = m->get(MainServerQuery);
    connect(r, SIGNAL(finished()), this, SLOT(Login()));
}

void MainWindow::Login() {
    QMessageBox::information(this, "OK", "OK !");
}

SGaist

target_link_libraries(main PRIVATE Qt${QT_VERSION_MAJOR}::Widgets Qt${QT_VERSION_MAJOR}::Network)

Ou alors sur une ligne séparée:

target_link_libraries(main PRIVATE Qt${QT_VERSION_MAJOR}::Network)

Il y a les exemples pour cmake et qmake au sommet de la documentation des classes comme pour QNetworkRequest.

SGaist

Bonsoir,

Que contient le fichier CMakeLists.txt ?
Il faut s'assurer que le module network est dans la liste des dépendances de l'application.

Futuray Programming

Non, il n'y est pas, j'utilise le code pré-fait et y ajoute juste les fichiers dont j'ai besoin.

cmake_minimum_required(VERSION 3.5)

project(main VERSION 0.1 LANGUAGES CXX)

set(CMAKE_INCLUDE_CURRENT_DIR ON)

set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)
find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets)
find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Network)

set(PROJECT_SOURCES
        main.cpp
        mainwindow.cpp
        mainwindow.h
        mainwindow.ui
        files.qrc
)

if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
    qt_add_executable(main
        MANUAL_FINALIZATION
        ${PROJECT_SOURCES}
    )
# Define target properties for Android with Qt 6 as:
#    set_property(TARGET main APPEND PROPERTY QT_ANDROID_PACKAGE_SOURCE_DIR
#                 ${CMAKE_CURRENT_SOURCE_DIR}/android)
# For more information, see https://doc.qt.io/qt-6/qt-add-executable.html#target-creation
else()
    if(ANDROID)
        add_library(main SHARED
            ${PROJECT_SOURCES}
        )
# Define properties for Android with Qt 5 after find_package() calls as:
#    set(ANDROID_PACKAGE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/android")
    else()
        add_executable(main
            ${PROJECT_SOURCES}
        )
    endif()
endif()

target_link_libraries(main PRIVATE Qt${QT_VERSION_MAJOR}::Widgets)

set_target_properties(main PROPERTIES
    MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
    MACOSX_BUNDLE TRUE
    WIN32_EXECUTABLE TRUE
)

install(TARGETS main
    BUNDLE DESTINATION .
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})

if(QT_VERSION_MAJOR EQUAL 6)
    qt_finalize_executable(main)
endif()

Comment on l'ajoute ?

SGaist

target_link_libraries(main PRIVATE Qt${QT_VERSION_MAJOR}::Widgets Qt${QT_VERSION_MAJOR}::Network)

Ou alors sur une ligne séparée:

target_link_libraries(main PRIVATE Qt${QT_VERSION_MAJOR}::Network)

Il y a les exemples pour cmake et qmake au sommet de la documentation des classes comme pour QNetworkRequest.

Futuray Programming

A, oui oups...
Merci !