diff --git a/.ci/clang-tidy.sh b/.ci/clang-tidy.sh
new file mode 100644
index 0000000..913c79a
--- /dev/null
+++ b/.ci/clang-tidy.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+
+echo "Doing clang-tidy..."
+bool=false
+# explicitly set IFS to contain only a line feed
+IFS='
+'
+filelist="$(find . -not \( -path './*build*' -prune \) -type f ! -name "$(printf "*\n*")")"
+for file in $filelist; do
+  if echo "$file" | grep -q -E ".*(\.cpp|\.h|\.hpp)$" ; then
+    #Extra check missing dependencies due to clang-tidy doesn't toggle exit code.
+    clang_tidy_lib_check="$(clang-tidy -warnings-as-errors='*' -header-filter='.*,-cpptoml.hpp' -checks='*,-llvm-header-guard,-fuchsia-statically-constructed-objects,-fuchsia-default-arguments,-fuchsia-default-arguments-calls,-cppcoreguidelines-pro-bounds-pointer-arithmetic,-cppcoreguidelines-pro-bounds-constant-array-index,-bugprone-narrowing-conversions,-cppcoreguidelines-narrowing-conversions,-cppcoreguidelines-pro-type-const-cast,-cppcoreguidelines-pro-type-reinterpret-cast,-hicpp-signed-bitwise,-bugprone-exception-escape,-cppcoreguidelines-pro-type-member-init,-cppcoreguidelines-pro-type-cstyle-cast,-hicpp-member-init' "$file" -- -I. -std=c++14 2>&1)"
+    for tidy_line in $clang_tidy_lib_check; do
+      echo "$tidy_line" | grep -q -v -E "^Error while processing*"
+      if [ $? -eq 1 ]; then
+	bool=true
+      fi
+      echo "$tidy_line" | grep -q -v -E ".* error: .*"
+      if [ $? -eq 1 ]; then
+	bool=true
+      fi
+      echo "$tidy_line"
+    done
+  fi
+done
+if $bool; then
+  exit 1
+else
+  echo "No clang-tidy errors found."
+fi
+
+exit 0
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..033cd86
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,68 @@
+---
+
+image: samueldebruyn/debian-git:latest
+
+stages:
+  - style
+  - test
+  - build
+
+
+clang_tidy:
+    image: joethei/clang_tidy
+    stage: style
+    tags:
+      - docker-ci
+    script:
+      - sh .ci/clang-tidy.sh;
+
+make_test:
+  stage: test
+  tags:
+    - docker-ci
+  script:
+    - apt-get update
+    - apt-get install -y g++ make cmake clang-tidy libfltk1.3 libfltk1.3-dev
+    - mkdir current
+    - ls | grep -v current | xargs mv -t current
+    - git clone https://github.com/catchorg/Catch2.git
+    - cd Catch2
+    - cmake -Bbuild -H. -DBUILD_TESTING=OFF
+    - cmake --build build/ --target install
+    - cd ..
+    - git clone https://gitlab-ci-token:${CI_JOB_TOKEN}@gitlab.repo.digitech.hs-emden-leer.de/link/projekte/ws19/vkvm-new/library.git
+    - mkdir library/build
+    - cd library/build
+    - cmake ..
+    - make
+    - cd ../../current
+    - mkdir build
+    - cd build
+    - cmake ..
+    - make
+    - make test
+
+cmake_build:
+  stage: build
+  tags:
+    - docker-ci
+  script:
+    - apt-get update
+    - apt-get install -y g++ make cmake clang-tidy libfltk1.3 libfltk1.3-dev
+    - mkdir current
+    - ls | grep -v current | xargs mv -t current
+    - git clone https://github.com/catchorg/Catch2.git
+    - cd Catch2
+    - cmake -Bbuild -H. -DBUILD_TESTING=OFF
+    - cmake --build build/ --target install
+    - cd ..
+    - git clone https://gitlab-ci-token:${CI_JOB_TOKEN}@gitlab.repo.digitech.hs-emden-leer.de/link/projekte/ws19/vkvm-new/library.git
+    - mkdir library/build
+    - cd library/build
+    - cmake ..
+    - make
+    - cd ../../current
+    - mkdir build
+    - cd build
+    - cmake ..
+    - make
\ No newline at end of file
diff --git a/main/main.cpp b/main/main.cpp
index 97583c4..aca54ba 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -1,70 +1,199 @@
 
 #include <iostream>
 #include <Fl/Fl.H>
-#include <FL/Fl_Box.H>
+#include <Fl/Fl_Box.H>
 #include <FL/Fl_Window.H>
 #include <FL/fl_draw.H>
 
+#include "vkvm.hpp"
 
 
 #define window_height 600
 #define window_width 800
 
-/*****************************************************************************/
-/* This class provides a view to copy the offscreen surface to */
+//Statusbar**************************************/
 
-int color_map[window_width][window_height];
-class My_Window : public Fl_Window{
-    int x,y,button;
-    int handle(int e)
-    {
+/** The class inherits a char *text from the Fl_Box. It also shows the window-resolution and the mouse-position.
+ * @param text: A pointer to a char-array, that can contain a text like a status or whatever you want.
+ */
 
-        switch (e)
-        {
+class Statusbar : public Fl_Box {
+    char *text;
+public:
+    /** The constructor of Statusbar has to get additional parameters.
+      * @param x: The mouse-position on the x-axis.
+      * @param y: The mouse-position on the y-axis:
+      * @param w: The width of a single pixel,
+      * @param h: The height of a single pixel.
+      */
+    Statusbar (int x, int y, int w, int h, char *text) :
+            Fl_Box(x, y, w, h,text) {
+        this->text = text;
+    };
+    void set_text(char *text) {
+        this->text = text;
+    }
+    //An exampel to show, how the content of the text can be changed.
+    void change_text(){
+        if(text=="status0")
+            set_text("status1");
+        else
+            set_text("status0");
+    }
+    //This function refreshes the statusbar.
+    void refresh_label(){
+        this->label(text);
+    }
+};
+
+
+//My_Window*************************************/
+/** The My_Windows-class generates a window, within the window it recognizes the curretn mouse-position.
+ * It also recognizes if a button is pushed on the keyboard or the mouse. Furthermore the class depict the
+ * content of the Image-class and provides functions to refresh it.
+ * @parame x The mouse-position on the x-axis.
+ * @parame y The mouse-position on the y-axis.
+ * @parame button The button that was pushed last.
+ */
+
+class My_Window : public Fl_Window {
+    int x, y, button;
+
+    /*Function to handle the input*/
+    int handle(int e) {
+        switch (e) {
+            /*Mousebutton*/
+            case FL_PUSH:
+                if (Fl::event_button() == FL_LEFT_MOUSE) {
+                    std::cout << "Mouse:left" << std::endl;
+                } else if (Fl::event_button() == FL_RIGHT_MOUSE) {
+                    std::cout << "Mouse:right" << std::endl;
+                } else {
+                    std::cout << "Mouse:middle" << std::endl;
+                }
+                return 1;
+                /*Mousebutton and movement*/
+            case FL_DRAG:
+                x = Fl::event_x();
+                y = Fl::event_y();
+                std::cout << "Postion X:" << x << " Postion Y:" << y << std::endl;
+                if (Fl::event_button() == FL_LEFT_MOUSE) {
+                    std::cout << "Mouse:left" << std::endl;
+                } else if (Fl::event_button() == FL_RIGHT_MOUSE) {
+                    std::cout << "Mouse:right" << std::endl;
+                } else {
+                    std::cout << "Mouse:middle" << std::endl;
+                }
+                return 1;
+                /*Mousemovement*/
             case FL_MOVE:
                 x = Fl::event_x();
                 y = Fl::event_y();
-                std::cout<<"Postion X:"<< x <<" Postion Y:"<< y <<std::endl;
+                std::cout << "Postion X:" << x << " Postion Y:" << y << std::endl;
                 return 1;
+                /*keyboardbutton*/
             case FL_KEYBOARD:
                 button = Fl::event_button();
-                std::cout<<"Keyboard:"<< (unsigned short)button <<std::endl;
+                std::cout << "Keyboard:" << (unsigned short) button << " down"<<std::endl;
+                return 1;
+            case FL_KEYUP:
+                button = Fl::event_button();
+                std::cout << "Keyboard:" << (unsigned short) button << " up"<<std::endl;
                 return 1;
         }
 
     }
 
 public:
-    My_Window(int x, int y, const char *l ) : Fl_Window(x,y,l){};
+    My_Window(int x, int y, const char *l) : Fl_Window(x, y, l) {}
 };
 
-class Pixel : public Fl_Widget {
-    Fl_Color color;
-    void draw(){
-        fl_draw_box(static_cast<Fl_Boxtype>(1), x(), y(), w(), h(), color);
+
+//Image**************************************/
+/** The Image-class draws the bitmap that it get from the Shared Memory.
+ * @param *buf: A pointer to the bitmap, that the image-class has to draw. Three chars are needed to get the RGB-value of a pixel, so the size equals window_height * window_width * 3.
+ */
+
+class Image : public Fl_Widget {
+    uchar *buf;
+    //Function to draw a bitmap
+    void draw() {
+        fl_draw_image(buf, x(), y(), w(), h());
     }
 
+    /** The constructor of the image class, get additional
+      * @param x: The mouse-position on the x-axis.
+      * @param y: The mouse-position on the y-axis:
+      * @param w: The width of a single pixel,
+      * @param h: The height of a single pixel.
+      */
+
 public:
-    Pixel(int x,int y,int w,int h,int RGB) :
-            Fl_Widget(x,y,w,h,0) {
-        this->color = fl_rgb_color((uchar)((RGB&0xff000000)>>24),(uchar)((RGB&0xff0000)>>16),(uchar)((RGB&0xff00)>>8));
+
+    Image(int x, int y, int w, int h) :
+            Fl_Widget(x, y, w, h, 0) {
+        buf = new uchar[w * h * 3];
+        /*Just an example.*/
+        for (int i = 0; i < h; i++) {
+            for (int j = 0; j < w; j++) {
+                buf[(j + (i * w)) * 3 + 1] = 0xff;
+            }
+        }
+    }
+
+    /*A function to change the colors of the image-class. It reads the colors from the Shared Memory-Class*/
+    void change_color() {
+        for (int i = 0; i < h(); i++) {
+            for (int j = 0; j < w(); j++) {
+                vkvm::Color c = vkvm::getPixel(j,i);
+                buf[(i * w() + j) * 3 + 0] = c.getRed();
+                buf[(i * w() + j) * 3 + 1] = c.getGreen();
+                buf[(i * w() + j) * 3 + 2] = c.getBlue();
+            }
+        }
     }
 };
+/*Functions to refresh the image.*/
+void refresh_image(void *pointer) {
+    ((Image *) pointer)->redraw();
+    Fl::repeat_timeout(0.5, refresh_image, pointer);//nach 0.5 sec refresh_image(pointer) anrufen. Here pointer ist wie ein Parameter
+}
 
+void change_color(void *pointer) {
+    ((Image *) pointer)->change_color();
+    Fl::repeat_timeout(1, change_color, pointer);
+}
+
+void refresh_statusbar(void *pointer) {
+    ((Statusbar **) pointer)[0]->refresh_label();
+    Fl::repeat_timeout(0.5, refresh_statusbar, pointer);
+}
+
+void change_status(void *pointer) {
+    ((Statusbar **) pointer)[0]->change_text();
+    Fl::repeat_timeout(1, change_status, pointer);
+}
+//main*************************************/
+/**
+ * The main function initializes all needed classes and executes the functions.
+ */
 int main(int argc, char **argv) {
-    for(int i=0;i<100;i++){
-        for (int j = 0; j < 100 ; j++) {
-            color_map[i][j]=0xff000000;
-        }
-    }
-    My_Window* window = new My_Window(window_width, window_height, "example");
+    vkvm::initialize(0);
+
+    My_Window *window = new My_Window(window_width, window_height, "example");
+    Statusbar *status[5];
     window->begin();
-    for(int i=0;i<100;i++){
-        for (int j = 0; j < 100 ; j++) {
-            new Pixel(i,j,1,1,color_map[i][j]);
-        }
-    }
+    Image *image = new Image(0, 30, window_width, window_height - 30);
+    status[0] = new Statusbar(0, 0, 60, 30, "status0");
+    status[1] = new Statusbar(60, 0, 60, 30, "status1");
+    status[2] = new Statusbar(120, 0, 60, 30, "status2");
+    status[3] = new Statusbar(180, 0, 60, 30, "status3");
+    status[4] = new Statusbar(240, 0, 60, 30, "status4");
+    Fl::repeat_timeout(0.5, refresh_image, image);
+    Fl::repeat_timeout(1, change_color, image);
+    Fl::repeat_timeout(0.5, refresh_statusbar, status);
+    Fl::repeat_timeout(1, change_status, status);
     window->end();
-    window->show(argc,argv);
+    window->show(argc, argv);
     return Fl::run();
-} // main
\ No newline at end of file
+}
\ No newline at end of file