diff --git a/alert.cpp b/alert.cpp
index f995668..ddc0014 100644
--- a/alert.cpp
+++ b/alert.cpp
@@ -1,5 +1,6 @@
 #include "alert.h"
 #include "ui_alert.h"
+#include "functions.h"
 
 #include <QPixmap>
 #include <QScreen>
diff --git a/alert.h b/alert.h
index b299e65..a5ffe3a 100644
--- a/alert.h
+++ b/alert.h
@@ -2,10 +2,6 @@
 #define ALERT_H
 
 #include <QWidget>
-#include <iostream>
-#include <fstream>
-#include <QFile>
-#include <QTextStream>
 
 namespace Ui {
 class alert;
@@ -20,32 +16,10 @@ class alert : public QWidget
 public:
     explicit alert(QWidget *parent = nullptr);
     ~alert();
-    void string_writeconfig(string file, string config_option) {
-        ofstream fhandler;
-        fhandler.open(file);
-        fhandler << config_option;
-        fhandler.close();
-    }
-    bool checkconfig(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadOnly);
-        QTextStream in (&config);
-        const QString content = in.readAll();
-        string contentstr = content.toStdString();
-        if(contentstr.find("true") != std::string::npos) {
-            return true;
-        }
-        else {
-            return false;
-        }
-        config.close();
-    };
 
 private slots:
     void on_continueBtn_clicked();
-
     void on_resetBtn_clicked();
-
     void on_continue2Btn_clicked();
 
 private:
diff --git a/apps.h b/apps.h
index f366fbd..5f3f7c9 100644
--- a/apps.h
+++ b/apps.h
@@ -20,11 +20,8 @@ public:
 private slots:
     void on_scribbleLaunchBtn_clicked();
     void exitSlot();
-
     void on_lightmapsLaunchBtn_clicked();
-
     void on_savedWordsLaunchBtn_clicked();
-
     void on_calendarLaunchBtn_clicked();
 
 private:
diff --git a/brightnessdialog.cpp b/brightnessdialog.cpp
index 66ead4e..23f05f6 100644
--- a/brightnessdialog.cpp
+++ b/brightnessdialog.cpp
@@ -1,5 +1,6 @@
 #include "brightnessdialog.h"
 #include "ui_brightnessdialog.h"
+#include "functions.h"
 
 #include <QFont>
 #include <QFontDatabase>
diff --git a/brightnessdialog.h b/brightnessdialog.h
index c90e2fa..ba10238 100644
--- a/brightnessdialog.h
+++ b/brightnessdialog.h
@@ -2,10 +2,6 @@
 #define BRIGHTNESSDIALOG_H
 
 #include <QDialog>
-#include <fstream>
-#include <iostream>
-#include <QTextStream>
-#include <QFile>
 
 using namespace std;
 
@@ -22,43 +18,12 @@ public:
     int oldValue;
     explicit brightnessDialog(QWidget *parent = nullptr);
     ~brightnessDialog();
-    void brightness_writeconfig(int value) {
-        ofstream fhandler;
-        fhandler.open(".config/03-brightness/config");
-        fhandler << value;
-        fhandler.close();
-    }
-    void string_checkconfig_ro(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadOnly);
-        QTextStream in (&config);
-        checkconfig_str_val = in.readAll();
-        config.close();
-    }
-    int get_brightness() {
-        QFile brightness("/var/run/brightness");
-        brightness.open(QIODevice::ReadOnly);
-        QString valuestr = brightness.readAll();
-        int value = valuestr.toInt();
-        brightness.close();
-        return value;
-    }
-    void set_brightness(int value) {
-        ofstream fhandler;
-        fhandler.open("/var/run/brightness");
-        fhandler << value;
-        fhandler.close();
-    }
 
 private slots:
     void on_quitBtn_clicked();
-
     void on_horizontalSlider_valueChanged(int value);
-
     void on_incBtn_clicked();
-
     void on_decBtn_clicked();
-
     void on_okBtn_clicked();
 
 private:
diff --git a/functions.h b/functions.h
new file mode 100644
index 0000000..2230966
--- /dev/null
+++ b/functions.h
@@ -0,0 +1,158 @@
+#ifndef FUNCTIONS_H
+#define FUNCTIONS_H
+
+#include <QFile>
+#include <QString>
+#include <QTextStream>
+#include <fstream>
+#include <QDir>
+#include <QProcess>
+#include <regex>
+
+// https://stackoverflow.com/questions/6080853/c-multiple-definition-error-for-global-functions-in-the-header-file/20679534#20679534
+namespace {
+    QString checkconfig_str_val;
+    QString batt_level;
+    int batt_level_int;
+    bool checked_box = false;
+    bool checkconfig(QString file) {
+        QFile config(file);
+        config.open(QIODevice::ReadOnly);
+        QTextStream in (&config);
+        const QString content = in.readAll();
+        std::string contentstr = content.toStdString();
+        if(contentstr.find("true") != std::string::npos) {
+            return true;
+        }
+        else {
+            return false;
+        }
+        config.close();
+        return 0;
+    };
+    bool checkconfig_rw(QString file) {
+        QFile config(file);
+        config.open(QIODevice::ReadWrite);
+        QTextStream in (&config);
+        const QString content = in.readAll();
+        std::string contentstr = content.toStdString();
+        if(contentstr.find("true") != std::string::npos) {
+            return true;
+        }
+        else {
+            return false;
+        }
+        config.close();
+        return 0;
+    };
+    int brightness_checkconfig(QString file) {
+        QFile config(file);
+        config.open(QIODevice::ReadWrite);
+        QTextStream in (&config);
+        const QString content = in.readAll();
+        int content_int = content.toInt();
+        return content_int;
+        config.close();
+        return 0;
+    };
+    int get_brightness() {
+        QFile brightness("/var/run/brightness");
+        brightness.open(QIODevice::ReadOnly);
+        QString valuestr = brightness.readAll();
+        int value = valuestr.toInt();
+        brightness.close();
+        return value;
+        return 0;
+    }
+    void set_brightness(int value) {
+        std::ofstream fhandler;
+        fhandler.open("/var/run/brightness");
+        fhandler << value;
+        fhandler.close();
+    }
+    int int_checkconfig(QString file) {
+        QFile int_config(file);
+        int_config.open(QIODevice::ReadOnly);
+        QString valuestr = int_config.readAll();
+        int value = valuestr.toInt();
+        int_config.close();
+        return value;
+        return 0;
+    }
+    int display_quote() {
+        QDir::setCurrent(".config/05-quote");
+        QString quote_prog ("sh");
+        QStringList quote_args;
+        quote_args << "quote.sh";
+        QProcess *quote_proc = new QProcess();
+        quote_proc->start(quote_prog, quote_args);
+        quote_proc->waitForFinished();
+        QDir::setCurrent("/mnt/onboard/.adds/inkbox");
+
+        int quote_value = int_checkconfig(".config/05-quote/quote");
+        return quote_value;
+        return 0;
+    }
+    void string_writeconfig(std::string file, std::string config_option) {
+        std::ofstream fhandler;
+        fhandler.open(file);
+        fhandler << config_option;
+        fhandler.close();
+    }
+    void string_checkconfig(QString file) {
+        QFile config(file);
+        config.open(QIODevice::ReadWrite);
+        QTextStream in (&config);
+        checkconfig_str_val = in.readAll();
+        config.close();
+    }
+    void string_checkconfig_ro(QString file) {
+        QFile config(file);
+        config.open(QIODevice::ReadOnly);
+        QTextStream in (&config);
+        checkconfig_str_val = in.readAll();
+        config.close();
+    }
+    void brightness_writeconfig(int value) {
+        std::ofstream fhandler;
+        fhandler.open(".config/03-brightness/config");
+        fhandler << value;
+        fhandler.close();
+    }
+    void get_battery_level() {
+        QFile batt_level_file("/sys/devices/platform/pmic_battery.1/power_supply/mc13892_bat/capacity");
+        batt_level_file.open(QIODevice::ReadOnly);
+        batt_level = batt_level_file.readAll();
+        batt_level = batt_level.trimmed();
+        batt_level_int = batt_level.toInt();
+        batt_level = batt_level.append("%");
+        batt_level_file.close();
+    }
+    void writeconfig(std::string file, std::string config) {
+            std::ofstream fhandler;
+            fhandler.open(file);
+            fhandler << config << std::boolalpha << checked_box << endl;
+            fhandler.close();
+    }
+    bool checkconfig_match(QString file, std::string pattern) {
+        QFile config(file);
+        config.open(QIODevice::ReadWrite);
+        QTextStream in (&config);
+        const QString content = in.readAll();
+        std::string contentstr = content.toStdString();
+
+        // Thanks to https://stackoverflow.com/questions/22516463/how-do-i-find-a-complete-word-not-part-of-it-in-a-string-in-c
+        std::regex r("\\b" + pattern + "\\b");
+        std::smatch m;
+
+        if(std::regex_search(contentstr, m, r)) {
+            return true;
+        }
+        else {
+            return false;
+        }
+        config.close();
+        return 0;
+    };
+}
+#endif // FUNCTIONS_H
diff --git a/generaldialog.cpp b/generaldialog.cpp
index b006138..8713cb7 100644
--- a/generaldialog.cpp
+++ b/generaldialog.cpp
@@ -1,5 +1,6 @@
 #include "generaldialog.h"
 #include "ui_generaldialog.h"
+#include "functions.h"
 
 #include <QFile>
 #include <QDebug>
diff --git a/generaldialog.h b/generaldialog.h
index e5b1676..8565ce1 100644
--- a/generaldialog.h
+++ b/generaldialog.h
@@ -2,9 +2,6 @@
 #define GENERALDIALOG_H
 
 #include <QDialog>
-#include <QFile>
-#include <QTextStream>
-#include <fstream>
 
 using namespace std;
 
@@ -21,26 +18,6 @@ public:
     ~generalDialog();
     bool resetDialog = false;
     bool updateDialog = false;
-    bool checkconfig(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadWrite);
-        QTextStream in (&config);
-        const QString content = in.readAll();
-        string contentstr = content.toStdString();
-        if(contentstr.find("true") != std::string::npos) {
-            return true;
-        }
-        else {
-            return false;
-        }
-        config.close();
-    };
-    void string_writeconfig(string file, string config_option) {
-        ofstream fhandler;
-        fhandler.open(file);
-        fhandler << config_option;
-        fhandler.close();
-    }
 
 private slots:
     void on_cancelBtn_clicked();
diff --git a/inkbox.pro b/inkbox.pro
index 06cd7e7..1cc9b7f 100644
--- a/inkbox.pro
+++ b/inkbox.pro
@@ -4,6 +4,8 @@ greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
 CONFIG += c++11
 
+QMAKE_CXXFLAGS += -Wno-unused-function
+
 # You can make your code fail to compile if it uses deprecated APIs.
 # In order to do so, uncomment the following line.
 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
@@ -27,6 +29,7 @@ HEADERS += \
     apps.h \
     brightnessdialog.h \
     calendarapp.h \
+    functions.h \
     generaldialog.h \
     mainwindow.h \
     quit.h \
diff --git a/main.cpp b/main.cpp
index 5cc1c04..f455929 100644
--- a/main.cpp
+++ b/main.cpp
@@ -16,6 +16,7 @@
 #include "mainwindow.h"
 #include "alert.h"
 #include "generaldialog.h"
+#include "functions.h"
 #include <QApplication>
 #include <QFile>
 #include <QTextStream>
@@ -25,14 +26,9 @@
 
 int main(int argc, char *argv[])
 {
+    checkconfig("test");
     // Checking if there has been an ALERT flag set up, and if there is, show a big warning
-    QFile config("/external_root/boot/flags/ALERT");
-    config.open(QIODevice::ReadOnly);
-    QTextStream in (&config);
-    const QString content = in.readAll();
-    string contentstr = content.toStdString();
-    config.close();
-    if(contentstr.find("true") != std::string::npos) {
+    if(checkconfig("/external_root/boot/flags/ALERT") == true) {
         QApplication a(argc, argv);
         alert w;
 
diff --git a/mainwindow.cpp b/mainwindow.cpp
index c7bee6f..ed23915 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -4,6 +4,7 @@
 #include "ui_settings.h"
 #include "apps.h"
 #include "ui_apps.h"
+#include "functions.h"
 #include <QTime>
 #include <QDateTime>
 #include <QTimer>
diff --git a/mainwindow.h b/mainwindow.h
index 7a13e59..50b7be4 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -10,9 +10,6 @@
 #include "usbms_splash.h"
 #include "brightnessdialog.h"
 #include "generaldialog.h"
-#include <iostream>
-#include <QFile>
-#include <QTextStream>
 using namespace std;
 
 QT_BEGIN_NAMESPACE
@@ -26,128 +23,11 @@ class MainWindow : public QMainWindow
 public:
     MainWindow(QWidget *parent = nullptr);
     ~MainWindow();
-    bool checked_box = false;
     bool existing_recent_books = false;
     bool reboot_after_update = false;
-    int batt_level_int;
     bool updateDialog = false;
     int timerTime = 0;
-    QString checkconfig_str_val;
     QString relative_path;
-    QString batt_level;
-    bool checkconfig(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadOnly);
-        QTextStream in (&config);
-        const QString content = in.readAll();
-        string contentstr = content.toStdString();
-        if(contentstr.find("true") != std::string::npos) {
-            return true;
-        }
-        else {
-            return false;
-        }
-        config.close();
-    };
-    bool checkconfig_rw(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadWrite);
-        QTextStream in (&config);
-        const QString content = in.readAll();
-        string contentstr = content.toStdString();
-        if(contentstr.find("true") != std::string::npos) {
-            return true;
-        }
-        else {
-            return false;
-        }
-        config.close();
-    };
-    void writeconfig(string file, string config) {
-            ofstream fhandler;
-            fhandler.open(file);
-            fhandler << config << boolalpha << checked_box << endl;
-            fhandler.close();
-    }
-    void get_battery_level() {
-        QFile batt_level_file("/sys/devices/platform/pmic_battery.1/power_supply/mc13892_bat/capacity");
-        batt_level_file.open(QIODevice::ReadOnly);
-        batt_level = batt_level_file.readAll();
-        batt_level = batt_level.trimmed();
-        batt_level_int = batt_level.toInt();
-        batt_level = batt_level.append("%");
-        batt_level_file.close();
-    }
-    int brightness_checkconfig(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadWrite);
-        QTextStream in (&config);
-        const QString content = in.readAll();
-        int content_int = content.toInt();
-        return content_int;
-        config.close();
-    };
-    int get_brightness() {
-        QFile brightness("/var/run/brightness");
-        brightness.open(QIODevice::ReadOnly);
-        QString valuestr = brightness.readAll();
-        int value = valuestr.toInt();
-        brightness.close();
-        return value;
-    }
-    void set_brightness(int value) {
-        ofstream fhandler;
-        fhandler.open("/var/run/brightness");
-        fhandler << value;
-        fhandler.close();
-    }
-    void brightness_writeconfig(int value) {
-        ofstream fhandler;
-        fhandler.open(".config/03-brightness/config");
-        fhandler << value;
-        fhandler.close();
-    }
-    int int_checkconfig(QString file) {
-        QFile int_config(file);
-        int_config.open(QIODevice::ReadOnly);
-        QString valuestr = int_config.readAll();
-        int value = valuestr.toInt();
-        int_config.close();
-        return value;
-    }
-    void string_checkconfig(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadWrite);
-        QTextStream in (&config);
-        checkconfig_str_val = in.readAll();
-        config.close();
-    }
-    void string_checkconfig_ro(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadOnly);
-        QTextStream in (&config);
-        checkconfig_str_val = in.readAll();
-        config.close();
-    }
-    void string_writeconfig(string file, string config_option) {
-        ofstream fhandler;
-        fhandler.open(file);
-        fhandler << config_option;
-        fhandler.close();
-    }
-    int display_quote() {
-        QDir::setCurrent(".config/05-quote");
-        QString quote_prog ("sh");
-        QStringList quote_args;
-        quote_args << "quote.sh";
-        QProcess *quote_proc = new QProcess();
-        quote_proc->start(quote_prog, quote_args);
-        quote_proc->waitForFinished();
-        QDir::setCurrent("/mnt/onboard/.adds/inkbox");
-
-        int quote_value = int_checkconfig(".config/05-quote/quote");
-        return quote_value;
-    }
 public slots:
 
 private slots:
diff --git a/quit.cpp b/quit.cpp
index 0b7a6eb..7f6fd94 100644
--- a/quit.cpp
+++ b/quit.cpp
@@ -1,5 +1,6 @@
 #include "quit.h"
 #include "ui_quit.h"
+#include "functions.h"
 #include <QProcess>
 #include <QIcon>
 #include <QPixmap>
diff --git a/quit.h b/quit.h
index 5a083bc..6582b01 100644
--- a/quit.h
+++ b/quit.h
@@ -2,8 +2,6 @@
 #define QUIT_H
 
 #include <QWidget>
-#include <fstream>
-#include <iostream>
 
 using namespace std;
 
@@ -18,22 +16,12 @@ class quit : public QWidget
 public:
     explicit quit(QWidget *parent = nullptr);
     ~quit();
-    void string_writeconfig(string file, string config_option) {
-        ofstream fhandler;
-        fhandler.open(file);
-        fhandler << config_option;
-        fhandler.close();
-    }
 
 private slots:
     void on_pushButton_clicked();
-
     void on_pushButton_2_clicked();
-
     void on_pushButton_4_clicked();
-
     void on_backBtn_clicked();
-
     void on_pushButton_3_clicked();
 
 private:
diff --git a/reader.cpp b/reader.cpp
index 68a010a..f8694a7 100644
--- a/reader.cpp
+++ b/reader.cpp
@@ -1,5 +1,6 @@
 #include "reader.h"
 #include "ui_reader.h"
+#include "functions.h"
 #include <QProcess>
 #include <QFileDialog>
 #include <QDir>
@@ -11,6 +12,7 @@
 #include <QSize>
 #include <QDesktopWidget>
 #include <QScreen>
+#include <QFontDatabase>
 
 using namespace std;
 
diff --git a/reader.h b/reader.h
index 06bfef6..07c8233 100644
--- a/reader.h
+++ b/reader.h
@@ -1,6 +1,8 @@
 #ifndef READER_H
 #define READER_H
 
+#include "functions.h"
+
 #include <QWidget>
 #include <QProcess>
 #include <QDebug>
@@ -8,12 +10,6 @@
 #include <QDir>
 #include <QDirIterator>
 #include <QList>
-#include <iostream>
-#include <fstream>
-#include <QMessageBox>
-#include <regex>
-#include <QFont>
-#include <QFontDatabase>
 
 using namespace std;
 
@@ -30,7 +26,6 @@ public:
     int split_files_number;
     int page_number;
     int dictionary_position = 1;
-    int batt_level_int;
     int pagesTurned = 0;
 
     // -1 : Never refresh | 0 : Refresh every page | 1 : Refresh every 1 page. And so on...
@@ -50,10 +45,7 @@ public:
     QString book_4;
     QString ittext;
     QString book_file;
-    QString batt_level;
     bool batt_status;
-    QString percent = "%";
-    QString checkconfig_str_val;
     QString selected_text;
     QString word;
     QString words; // Saved words
@@ -67,20 +59,6 @@ public:
     QList<QString> content;
     explicit reader(QWidget *parent = nullptr);
     ~reader();
-    bool checkconfig(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadWrite);
-        QTextStream in (&config);
-        const QString content = in.readAll();
-        string contentstr = content.toStdString();
-        if(contentstr.find("true") != std::string::npos) {
-            return true;
-        }
-        else {
-            return false;
-        }
-        config.close();
-    };
     int setup_book(QString book, int i, bool run_parser) {
         // Parse ebook
         QString mount_prog ("sh");
@@ -163,29 +141,6 @@ public:
             QDir::setCurrent("/mnt/onboard/.adds/inkbox");
         }
     }
-    int get_brightness() {
-        QFile brightness("/var/run/brightness");
-        brightness.open(QIODevice::ReadOnly);
-        QString valuestr = brightness.readAll();
-        int value = valuestr.toInt();
-        brightness.close();
-        return value;
-    }
-    int int_checkconfig(QString file) {
-        QFile int_config(file);
-        int_config.open(QIODevice::ReadOnly);
-        QString valuestr = int_config.readAll();
-        int value = valuestr.toInt();
-        int_config.close();
-        return value;
-    }
-    void string_checkconfig_ro(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadOnly);
-        QTextStream in (&config);
-        checkconfig_str_val = in.readAll();
-        config.close();
-    }
     void checkwords() {
         QFile words_list(".config/06-words/config");
         words_list.open(QIODevice::ReadWrite);
@@ -193,44 +148,6 @@ public:
         words = in.readAll();
         words_list.close();
     }
-    void set_brightness(int value) {
-        ofstream fhandler;
-        fhandler.open("/var/run/brightness");
-        fhandler << value;
-        fhandler.close();
-    }
-    void brightness_writeconfig(int value) {
-        ofstream fhandler;
-        fhandler.open(".config/03-brightness/config");
-        fhandler << value;
-        fhandler.close();
-    }
-    void string_checkconfig(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadWrite);
-        QTextStream in (&config);
-        checkconfig_str_val = in.readAll();
-        config.close();
-    }
-    bool checkconfig_match(QString file, string pattern) {
-        QFile config(file);
-        config.open(QIODevice::ReadWrite);
-        QTextStream in (&config);
-        const QString content = in.readAll();
-        string contentstr = content.toStdString();
-
-        // Thanks to https://stackoverflow.com/questions/22516463/how-do-i-find-a-complete-word-not-part-of-it-in-a-string-in-c
-        std::regex r("\\b" + pattern + "\\b");
-        std::smatch m;
-
-        if(std::regex_search(contentstr, m, r)) {
-            return true;
-        }
-        else {
-            return false;
-        }
-        config.close();
-    };
     bool epub_file_match(QString file) {
         QString fileExt = file.right(4);
 
@@ -241,21 +158,6 @@ public:
             return false;
         }
     };
-    void string_writeconfig(string file, string config_option) {
-        ofstream fhandler;
-        fhandler.open(file);
-        fhandler << config_option;
-        fhandler.close();
-    }
-    void get_battery_level() {
-        QFile batt_level_file("/sys/devices/platform/pmic_battery.1/power_supply/mc13892_bat/capacity");
-        batt_level_file.open(QIODevice::ReadOnly);
-        batt_level = batt_level_file.readAll();
-        batt_level = batt_level.trimmed();
-        batt_level_int = batt_level.toInt();
-        batt_level = batt_level.append("%");
-        batt_level_file.close();
-    }
     void dictionary_lookup(string word, QString first_letter, int position) {
         ofstream fhandler;
         fhandler.open("/inkbox/dictionary/word");
diff --git a/settings.cpp b/settings.cpp
index 61c6038..fc366c8 100644
--- a/settings.cpp
+++ b/settings.cpp
@@ -2,6 +2,7 @@
 #include "ui_settings.h"
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
+#include "functions.h"
 #include <QFile>
 #include <QMessageBox>
 #include <QSettings>
diff --git a/settings.h b/settings.h
index a409f67..fec7230 100644
--- a/settings.h
+++ b/settings.h
@@ -2,9 +2,6 @@
 #define SETTINGS_H
 
 #include <QWidget>
-#include <QFile>
-#include <QTextStream>
-#include <fstream>
 
 #include <usbms_splash.h>
 #include "generaldialog.h"
@@ -21,53 +18,11 @@ class settings : public QWidget
 
 public:
     int settings_page = 1;
-    bool checked_box = false;
     bool launch_sh = false;
     bool not_user_change = true;
-    QString checkconfig_str_val;
 
     explicit settings(QWidget *parent = nullptr);
     ~settings();
-    bool checkconfig(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadOnly);
-        QTextStream in (&config);
-        const QString content = in.readAll();
-        string contentstr = content.toStdString();
-        if(contentstr.find("true") != std::string::npos) {
-            return true;
-        }
-        else {
-            return false;
-        }
-        config.close();
-    }
-    void writeconfig(string file, string config) {
-        ofstream fhandler;
-        fhandler.open(file);
-        fhandler << config << boolalpha << checked_box << endl;
-        fhandler.close();
-    }
-    void string_writeconfig(string file, string config_option) {
-        ofstream fhandler;
-        fhandler.open(file);
-        fhandler << config_option;
-        fhandler.close();
-    }
-    void string_checkconfig(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadWrite);
-        QTextStream in (&config);
-        checkconfig_str_val = in.readAll();
-        config.close();
-    }
-    void string_checkconfig_ro(QString file) {
-        QFile config(file);
-        config.open(QIODevice::ReadOnly);
-        QTextStream in (&config);
-        checkconfig_str_val = in.readAll();
-        config.close();
-    }
 
 private slots:
     void exitSlot();
@@ -75,33 +30,19 @@ private slots:
     void on_aboutBtn_clicked();
     void on_okBtn_clicked();
     void on_clockCheckBox_toggled(bool checked);
-
     void on_quoteCheckBox_toggled(bool checked);
-
     void on_requestLeaseBtn_clicked();
-
     void on_usbmsBtn_clicked();
-
     void on_previousBtn_clicked();
-
     void on_nextBtn_clicked();
-
     void on_wordsNumber_valueChanged(int arg1);
-
     void on_updateBtn_clicked();
-
     void on_darkModeCheckBox_toggled(bool checked);
-
     void on_uiScalingSlider_valueChanged(int value);
-
     void on_menuBarCheckBox_toggled(bool checked);
-
     void on_comboBox_currentIndexChanged(const QString &arg1);
-
     void on_resetBtn_clicked();
-
     void on_setPasscodeBtn_clicked();
-
     void on_enableLockscreenCheckBox_toggled(bool checked);
 
 private:
diff --git a/usbms_splash.h b/usbms_splash.h
index a8bceb4..4dfa6f1 100644
--- a/usbms_splash.h
+++ b/usbms_splash.h
@@ -2,8 +2,6 @@
 #define USBMS_SPLASH_H
 
 #include <QWidget>
-#include <QFile>
-#include <QTextStream>
 
 namespace Ui {
 class usbms_splash;