winpcap-dev+pthread+pcapplusplus makes qt window do not appear

Hello, folks.

Here I have a problem.
I was planning to make some kind of sniffer, just for practising. And so I started facing problems from the setup.

So, basically program does not start.

.pro file

Code:

#-------------------------------------------------
#
# Project created by QtCreator 2017-03-16T17:23:52
#
#-------------------------------------------------
 
QT       += core gui
 
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
TARGET = untitled
TEMPLATE = app
#CONFIG += c++11
INCLUDEPATH += E:/lib/PcapPlusPlus-17.02-windows-mingw32-gcc-5.3.0/header
LIBS += E:/lib/PcapPlusPlus-17.02-windows-mingw32-gcc-5.3.0/Pcap++.lib
LIBS += E:/lib/PcapPlusPlus-17.02-windows-mingw32-gcc-5.3.0/Packet++.lib
LIBS += E:/lib/PcapPlusPlus-17.02-windows-mingw32-gcc-5.3.0/Common++.lib
 
INCLUDEPATH += E:/lib/WpdPack/Include
LIBS += -LE:/lib/WpdPack/Lib -lwpcap -lpacket
LIBS += -lpthread
LIBS += -lws2_32
LIBS += -liphlpapi
LIBS += -static-libgcc -static-libstdc++
 
SOURCES += main.cpp\
        sniffer.cpp
 
HEADERS  += sniffer.h
 
FORMS    += sniffer.ui

then goes sniffer.h

Code:

#ifndef SNIFFER_H
#define SNIFFER_H
#include <winsock2.h>
#include <QMainWindow>
 
namespace Ui {
class Sniffer;
}
 
class Sniffer : public QMainWindow
{
    Q_OBJECT
 
public:
    explicit Sniffer(QWidget *parent = 0);
    ~Sniffer();
 
private slots:
    void on_pushButton_2_clicked();
 
private:
    Ui::Sniffer *ui;
};
 
#endif // SNIFFER_H

.cpp

Code:

#include "sniffer.h"
#include "ui_sniffer.h"
 
#include <MacAddress.h>
#include <IpAddress.h>
#include <PlatformSpecificUtils.h>
#include <PcapLiveDeviceList.h>
#include <PcapLiveDevice.h>
#include <EthLayer.h>
#include <ArpLayer.h>
#include <Logger.h>
#include <QMessageBox>
 
using namespace pcpp;
Sniffer::Sniffer(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::Sniffer)
{
    ui->setupUi(this);
}
 
Sniffer::~Sniffer()
{
    delete ui;
}
 
void Sniffer::on_pushButton_2_clicked()
{
    const std::vector <PcapLiveDevice*>& a = PcapLiveDeviceList::getInstance().getPcapLiveDevicesList();
    /*QString showme(*a[0]->getName());
    QMessageBox::information(this, "info",showme);*/
}

and main

Code:

#include "sniffer.h"
#include <QApplication>
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Sniffer w;
    w.show();
 
    return a.exec();
}

so there's just 1 button and some headers.

I was using dll for pthreads from somewhere here

https://sourceforge.net/p/mingw-w64/...le%20pthreads/

which I copied to /mingw53_32/bin

precompiled pcapplusplus from.. here

http://seladb.github.io/PcapPlusPlus-Doc/download.html

and winpcap-dev from their site.

when I try to run the app, it appears in memory, visible in taskmgr, but window with my fancy button doesn't show.

Hope to your assistance, folks :)