first qt gui steps

src/gui/MainWindow.cpp

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+//
+// Created by lukas on 09.05.20.
+//
+
+#include <iostream>
+#include "MainWindow.h"
+#include "ui_mainwindow.h"
+
+MainWindow::MainWindow(QWidget *parent) :
+        QMainWindow(parent), ui(new Ui::MainWindow) {
+
+    ui->setupUi(this);
+    ui->textLog->
+
+//    ui->labelCurrentIP->setText("currently is nothing to do");
+//    ui->labelConfig->setText("blabliblub");
+//    ui->textfieldname->setText("hangover");
+
+    connect(ui->buttonCheckConfig, SIGNAL(clicked()), this, SLOT(checkConfigBtn()));
+    connect(ui->buttonRefreshIP, SIGNAL(clicked()), this, SLOT(refreshIPBtn()));
+
+    connect(this, SIGNAL(appendLogField(QString)), ui->textLog, SLOT(appendPlainText(QString)));
+//    connect(this, SIGNAL(setProgressBarValue(int)), ui->progressmanual, SLOT(setValue(int)));
+}
+
+MainWindow::~MainWindow() {
+    delete ui;
+}
+
+void MainWindow::checkConfigBtn() {
+    std::cout << "btn clicked!" << std::endl;
+
+    appendLogField("btn clicked! \n");
+}
+
+void MainWindow::refreshIPBtn() {
+
+}

src/gui/MainWindow.h

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+//
+// Created by lukas on 09.05.20.
+//
+
+#pragma once
+
+
+#include <QtWidgets/QMainWindow>
+
+namespace Ui {
+    class MainWindow;
+}
+
+class MainWindow : public QMainWindow{
+Q_OBJECT
+
+public:
+    explicit MainWindow(QWidget *parent = 0);
+    ~MainWindow();
+
+private:
+    Ui::MainWindow *ui;
+private slots:
+//    void startdownloadBtn();
+void checkConfigBtn();
+void refreshIPBtn();
+signals:
+    void appendLogField(QString);
+//    void setInfoLabelText(QString);
+//    void setProgressBarValue(int);
+};

src/gui/mainwindow.ui

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+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QMainWindow" name="MainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>823</width>
+    <height>618</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>MainWindow</string>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <widget class="QPushButton" name="buttonRefreshIP">
+    <property name="geometry">
+     <rect>
+      <x>290</x>
+      <y>300</y>
+      <width>91</width>
+      <height>33</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Refresh IP</string>
+    </property>
+   </widget>
+   <widget class="QLabel" name="labelCurrentIP">
+    <property name="geometry">
+     <rect>
+      <x>40</x>
+      <y>60</y>
+      <width>161</width>
+      <height>17</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Your current global IP:</string>
+    </property>
+   </widget>
+   <widget class="QPlainTextEdit" name="textLog">
+    <property name="enabled">
+     <bool>true</bool>
+    </property>
+    <property name="geometry">
+     <rect>
+      <x>40</x>
+      <y>410</y>
+      <width>691</width>
+      <height>191</height>
+     </rect>
+    </property>
+    <property name="cursor" stdset="0">
+     <cursorShape>IBeamCursor</cursorShape>
+    </property>
+   </widget>
+   <widget class="QLabel" name="label_2">
+    <property name="geometry">
+     <rect>
+      <x>40</x>
+      <y>380</y>
+      <width>64</width>
+      <height>17</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Log:</string>
+    </property>
+   </widget>
+   <widget class="QPushButton" name="buttonCheckConfig">
+    <property name="geometry">
+     <rect>
+      <x>270</x>
+      <y>140</y>
+      <width>91</width>
+      <height>33</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Check Config</string>
+    </property>
+   </widget>
+   <widget class="QLabel" name="labelConfig">
+    <property name="geometry">
+     <rect>
+      <x>270</x>
+      <y>180</y>
+      <width>141</width>
+      <height>17</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>Config is: undefined</string>
+    </property>
+   </widget>
+  </widget>
+  <widget class="QStatusBar" name="statusbar"/>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

src/maingui.cpp

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+//
+// Created by lukas on 09.05.20.
+//
+
+#include <QApplication>
+#include <iostream>
+#include "gui/MainWindow.h"
+
+int main(int argc, char *argv[]) {
+    std::cout << "gui here!" << std::endl;
+
+    QApplication a(argc, argv);
+    MainWindow w;
+    w.show();
+
+    return QApplication::exec();
+}