private void initializeWindow() {
    window = new Window();
    window.showFrame();
    
    mainMenu = new MainMenu(playerNames,colors);
    window.setFixedSize(mainMenu,GAME_BOARD_WIDTH,GAME_BOARD_HEIGHT-5);
    window.addToMainPanel(mainMenu);
  
    buttonPanel = new ButtonPanel(this);
    window.setFixedWidth(buttonPanel, CONTROL_PANEL_WIDTH);;