diff --git a/CMakeLists.txt b/CMakeLists.txt
index 245df11..aee843d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,7 +22,7 @@ file(GLOB_RECURSE TESTS test/*.cpp)
 set(LIB_PATH "${CMAKE_SOURCE_DIR}/../library")
 
 include_directories(${LIB_PATH}/include)
-add_executable(GUI ${SOURCES} ${HEADERS} main/main.cpp src/Statusbar.cpp src/GUI_Window.cpp src/Image.cpp src/GUI.hpp src/init.cpp)
+add_executable(GUI ${SOURCES} ${HEADERS} main/main.cpp src/Statusbar.cpp src/GUI_Window.cpp src/Image.cpp src/GUI.hpp src/GUI.cpp)
 
 target_link_libraries(GUI ${LIB_PATH}/lib/liblibrary.a)
 
diff --git a/main/main.cpp b/main/main.cpp
index 5eac64c..e71e8be 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -1,10 +1,9 @@
-#include "GUI.hpp"
+#include "../src/GUI.hpp"
 
 /** main
  *  The main function executes the functions of the GUI.
  */
 
 int main(int argc, char **argv) {
-    GUI_init();
-    GUI_run();
+    GUI_run(argc,argv);
 }
\ No newline at end of file
diff --git a/src/init.cpp b/src/GUI.cpp
similarity index 57%
rename from src/init.cpp
rename to src/GUI.cpp
index d42a800..1ea82d5 100644
--- a/src/init.cpp
+++ b/src/GUI.cpp
@@ -1,35 +1,42 @@
 #include "GUI.hpp"
+
 #define window_height 600
 #define window_width 800
-/** GUI_init
- *  The GUI_init-function initializes all needed classes for the GUI.
- */
-void GUI_init() {
-    vkvm::initialize(0);
-    My_Window *window = new My_Window(window_width, window_height, "example");
-    Statusbar *status[5];
-    Image *image = new Image(0, 30, window_width, window_height - 30);
-
-    //Dummy-Values TBD
-    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");
-
-}
 
 /** GUI_run
  *  The GUI_run-function starts all functions needed for the GUI.
  */
 
-void GUI_run() {
+auto GUI_run(int argc, char **argv) -> int {
+    vkvm::initialize(0);
+    GUI_Window *window = new GUI_Window(window_width, window_height, "example");
+    Statusbar *status[5];
+    //Dummy-Values TBD
     window->begin();
+    Image *image = new Image(0, 30, window_width, window_height - 30);
+    status[0] = new Statusbar(0, 0, 60, 30, "0");
+    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);
     return Fl::run();
 }
+
+
+void refresh_image(void *pointer) {
+    ((Image *) pointer)->getPixels();
+    ((Image *) pointer)->redraw();
+    Fl::repeat_timeout(0.5, refresh_image, pointer);
+}
+
+
+void refresh_statusbar(void *pointer) {
+    ((Statusbar **) pointer)[0]->change_text();
+    ((Statusbar **) pointer)[0]->refresh_label();
+    Fl::repeat_timeout(0.5, refresh_statusbar, pointer);
+}
+
diff --git a/src/GUI.hpp b/src/GUI.hpp
index 74b9fd9..e8ab6c7 100644
--- a/src/GUI.hpp
+++ b/src/GUI.hpp
@@ -4,36 +4,65 @@
 #include <FL/Fl_Window.H>
 #include <FL/fl_draw.H>
 #include "vkvm.hpp"
+#include "internal.hpp"
 
 #ifndef GUI_GUI_HPP
 #define GUI_GUI_HPP
+
+/** GUI_Window
+ * The GUI_Window-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.
+ * @param x The mouse-position on the x-axis.
+ * @param y The mouse-position on the y-axis.
+ * @param button The button that was pushed last.
+ */
 class GUI_Window : public Fl_Window {
     int x, y, button;
+
     int handle(int e);
+
 public:
-    GUI_Window(int x, int y, const char *l) : Fl_Window(x, y, l)
-}
+    GUI_Window(int x, int y, const char *l);
+};
+
+/** 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.
+  */
 
 class Image : public Fl_Widget {
     uchar *buf;
 public:
     Image(int x, int y, int w, int h);
-    void refresh_image(void *pointer);
-    void change_color(void *pointer);
-    void refresh_statusbar(void *pointer);
-    void change_status(void *pointer);
-}
 
+    void draw();
+
+    void getPixels();
+};
+
+/** Statusbar
+ *  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.
+ */
 class Statusbar : public Fl_Box {
     char *text;
 public:
-    Statusbar (int x, int y, int w, int h, char *text);
-    void set_text(char *text);
-    void change_text();
-    void refresh_label();
-}
+    Statusbar(int x, int y, int w, int h, char *text);
 
-void GUI_init();
-void GUI_run();
+    void set_text(char *text);
+
+    void change_text();
+
+    void refresh_label();
+};
+
+void refresh_image(void *pointer);
+
+void refresh_statusbar(void *pointer);
+
+int GUI_run(int argc, char **argv);
 
 #endif //GUI_GUI_HPP
diff --git a/src/GUI_Window.cpp b/src/GUI_Window.cpp
index 73fb96e..5e9b128 100644
--- a/src/GUI_Window.cpp
+++ b/src/GUI_Window.cpp
@@ -1,63 +1,57 @@
 #include "GUI.hpp"
 
-/** GUI_Window
- * The GUI_Window-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.
- * @param x The mouse-position on the x-axis.
- * @param y The mouse-position on the y-axis.
- * @param button The button that was pushed last.
- */
-
-class GUI_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;
-                return 1;
-                /*keyboardbutton*/
-            case FL_KEYBOARD:
-                button = Fl::event_button();
-                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;
-        }
 
+/*Function to handle the input*/
+auto GUI_Window::handle(int e) -> int {
+    switch (e) {
+        /*Mousebutton*/
+        case FL_PUSH:
+            vkvm::callEvent(vkvm::EventType::MouseButton);
+            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:
+            vkvm::callEvent(vkvm::EventType::MouseButton);
+            vkvm::callEvent(vkvm::EventType::MouseMove);
+            x = Fl::event_x();
+            y = Fl::event_y();
+            vkvm::setMousePosition(x,y);
+            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:
+            vkvm::callEvent(vkvm::EventType::MouseMove);
+            x = Fl::event_x();
+            y = Fl::event_y();
+            vkvm::setMousePosition(x,y);
+            return 1;
+            /*keyboardbutton*/
+        case FL_KEYBOARD:
+            vkvm::callEvent(vkvm::EventType::KeyDown);
+            button = Fl::event_button();
+            std::cout << "Keyboard:" << (unsigned short) button << " down" << std::endl;
+            return 1;
+        case FL_KEYUP:
+            vkvm::callEvent(vkvm::EventType::KeyUp);
+            button = Fl::event_button();
+            std::cout << "Keyboard:" << (unsigned short) button << " up" << std::endl;
+            return 1;
     }
 
-public:
-    GUI_Window(int x, int y, const char *l) : Fl_Window(x, y, l) {}
-};
+}
+
+GUI_Window::GUI_Window(int x, int y, const char *l) : Fl_Window(x, y, l) {}
+
 
diff --git a/src/Image.cpp b/src/Image.cpp
index 44e995f..c4284df 100644
--- a/src/Image.cpp
+++ b/src/Image.cpp
@@ -5,62 +5,33 @@
  *  @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());
-    }
+//Function to draw a bitmap
+auto Image::draw() -> void {
+    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:
-
-    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;
-            }
+Image::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();
-            }
+/*A function to change the colors of the image-class. It reads the colors from the Shared Memory-Class*/
+auto Image::getPixels() -> void {
+    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);
-}
diff --git a/src/Statusbar.cpp b/src/Statusbar.cpp
index 4bdfc2b..8e2e4a4 100644
--- a/src/Statusbar.cpp
+++ b/src/Statusbar.cpp
@@ -1,35 +1,31 @@
 #include "GUI.hpp"
 
-/** Statusbar
- *  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.
- */
 
-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);
-    }
+/** 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::Statusbar(int x, int y, int w, int h, char *text) :
+        Fl_Box(x, y, w, h, text) {
+    this->text = text;
 };
+
+auto Statusbar::set_text(char *text) -> void {
+    this->text = text;
+}
+
+//An exampel to show, how the content of the text can be changed.
+auto Statusbar::change_text() -> void {
+    if (text == "status0")
+        set_text("status1");
+    else
+        set_text("status0");
+}
+
+//This function refreshes the statusbar.
+auto Statusbar::refresh_label() -> void {
+    this->label(text);
+}
+