Error LNK2019 and LNK2001

riken7

Hello,
I have a problem when I'm compiling my project. I show an error ocurred.
I have 25 errors, these errors are:

mainwindow.obj:-1: error: LNK2019: símbolo externo "__declspec(dllimport) public: void __cdecl QSerialPort::setPortName(class QString const &)" (__imp_?setPortName@QSerialPort@@QEAAXAEBVQString@@@Z) sin resolver al que se hace referencia en la función "public: __cdecl MainWindow::MainWindow(class QWidget *)" (??0MainWindow@@QEAA@PEAVQWidget@@@Z)

and other example are

mainwindow.obj:-1: error: LNK2001: símbolo externo "public: virtual __int64 __cdecl QSerialPort::bytesAvailable(void)const " (?bytesAvailable@QSerialPort@@UEBA_JXZ) sin resolver

Mi code is:

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QtCore/QtGlobal>

#include <QMainWindow>

#include <QtSerialPort/QSerialPort>
#include <QPushButton>
#include <QTimer>
#include <QIODevice>
#include <QTime>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
   Q_OBJECT

public:
   explicit MainWindow(QWidget *parent = 0);
   ~MainWindow();
   void fill_array();
   void delay(int millisecondsToWait);


/*private slots:
   void temporizador1();
   void temporizador2();
   void temporizador3();
   void temporizador4();
   void inicio();*/



private:
   Ui::MainWindow *ui;
   QSerialPort *serial;
   QTimer *timer1, *timer2, *timer3, *timer4;
   QPushButton *aceptar;
   int primero[96];
   int segundo[92];
   int tercero[10];
   int cuarto[43];
   QString mensaje1, mensaje2, mensaje3, mensaje4;
};

#endif // MAINWINDOW_H

and

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    serial= new QSerialPort(this);
    aceptar= new QPushButton(this);
    aceptar->setText("Aceptar");
    serial->setPortName("COM3");
    serial->setBaudRate(9600);
    serial->setParity(QSerialPort::NoParity);
    serial->setDataBits(QSerialPort::Data8);
    serial->setStopBits(QSerialPort::OneStop);
    serial->setFlowControl(QSerialPort::NoFlowControl);
    serial->open(QIODevice::ReadWrite);

    timer1=new QTimer(this);
    timer2=new QTimer(this);
    timer3= new QTimer(this);
    timer4= new QTimer(this);

    ui->verticalLayout->addWidget(aceptar);
    fill_array();
    delay(5000);
    serial->write(mensaje1.toLatin1());
    delay(5000);
    serial->write(mensaje2.toLatin1());
    delay(5000);
    serial->write(mensaje3.toLatin1());
    delay(2000);
    serial->write(mensaje4.toLatin1());



    /*connect(aceptar,SIGNAL(clicked()),this,SLOT(inicio()));
    connect(timer1,SIGNAL(timeout()),this,SLOT(temporizador1()));
    connect(timer2,SIGNAL(timeout()),this,SLOT(temporizador2()));
    connect(timer3,SIGNAL(timeout()),this,SLOT(temporizador3()));
    connect(timer4,SIGNAL(timeout()),this,SLOT(temporizador4()));*/



}

MainWindow::~MainWindow()
{
    delete ui;

}


void MainWindow::fill_array(){
    for(int i=0;i<=95;i++){
        primero[i]=7;
        mensaje1=mensaje1+ QString::number(primero[i]);
    }
    for(int i=0;i<=91;i++){
        segundo[i]=5;
        mensaje2=mensaje2+ QString::number(segundo[i]);
    }
    for (int i=0;i<=9;i++){
        tercero[i]=6;
        mensaje3=mensaje3+ QString::number(tercero[i]);
    }
    for(int i=0;i<=62;i++){
        cuarto[i]=3;
        mensaje4=mensaje4+QString::number(cuarto[i]);
    }

}

/*void MainWindow::temporizador1(){
   serial->write(mensaje1.toLatin1());
   timer1->stop();
   timer2->start(5000);
}

void MainWindow::temporizador2(){
    serial->write(mensaje2.toLatin1());
    timer2->stop();
    timer3->start(5000);
}
void MainWindow::temporizador3(){
    serial->write(mensaje3.toLatin1());
    timer3->stop();
    timer4->start(2000);
}

void MainWindow::temporizador4(){
    serial->write(mensaje4.toLatin1());
    timer4->stop();
    timer1->start(5000);
}*/

/*void MainWindow::inicio(){
    timer1->start(5000);
}*/

void delay( int millisecondsToWait )
{
    QTime dieTime = QTime::currentTime().addMSecs( millisecondsToWait );
    while( QTime::currentTime() < dieTime )
    {
        QCoreApplication::processEvents( QEventLoop::AllEvents, 100 );
    }
}

I compile with MSVC2015 and qmake

Thanks for your responses.

raven-worx

@riken7
add QT += serialport to your .pro file

riken7

Now, I add QT += serialport, but errors LNK2019 and LNK 2001 go on happening

#-------------------------------------------------
#
# Project created by QtCreator 2016-12-27T10:52:48
#
#-------------------------------------------------

QT       += core gui
QT       += serialport

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets


TARGET = serie
TEMPLATE = app


SOURCES += main.cpp\
        mainwindow.cpp

HEADERS  += mainwindow.h

FORMS    += mainwindow.ui

thanks

SGaist

Hi,

Did you re-run qmake or force a full re-build of your project ?

riken7

First, I did re-run the project and Now I do re-build my project.

These error go on happening, I use build with debug.

Images o my settings

raven-worx

@riken7
to make sure:
You should rerun qmake. Means right click on your project in QtCreator and choose "Run qmake" to update the makefiles and thus the linker commands.

riken7

This post is deleted!

riken7

@raven-worx
Thanks, the project has compiled me perfectly but I have another problem when the program is executing, it crash.

I am a noob with Qt and MSVC and I don't know solving the problem.

Upload the images for yo can show that happening.

[Problem Images](Thanks, the project has compiled me perfectly)

I crew that It's a windows problem.

VRonin

@riken7 said in Error LNK2019 and LNK2001:

program is executing, it crash

Did you check with a debugger, often this behaviour is due to errors in the program itself

mrjj

Hi
make sure that [index] matches the len
for all
int primero[96];
int segundo[92];
int tercero[10];
int cuarto[43];

as this looks wrong
for(int i=0;i<=62;i++){
cuarto[i]=3; <<< is cuarto not ONLY 43? ( this can crash you)

riken7

@mrjj said in Error LNK2019 and LNK2001:

Hi
make sure that [index] matches the len
for all
int primero[96];
int segundo[92];
int tercero[10];
int cuarto[43];

as this looks wrong
for(int i=0;i<=62;i++){
cuarto[i]=3; <<< is cuarto not ONLY 43? ( this can crash you)

thanks, it's the problem!, i didn't look.