function RegisterEvents() {

  /*
      DISPLAY AND RESIZING
   */
  window.addEventListener('resize', function (evt) {
    logicEngine.Resize(evt);
  }, false);


  /*
      SYSTEM EVENTS
   */
  document.addEventListener('copy', function (evt) {
    evt.preventDefault();
    let copyObject = GetCopyObject();
    if (!copyObject) return;

    evt.clipboardData.setData('logicparts/json', JSON.stringify(copyObject));
    evt.clipboardData.setData('text', JSON.stringify(copyObject));
  });

  document.addEventListener('cut', function (evt) {
    evt.preventDefault();
    let copyObject = GetCopyObject();
    if (!copyObject) return;

    evt.clipboardData.setData('logicparts/json', JSON.stringify(copyObject));
    evt.clipboardData.setData('text', JSON.stringify(copyObject));

    logicEngine.Key_Press({ctrlKey: false, key: "Delete"});
    disableSelectedMenus(true);
  });

  document.addEventListener('paste', function (evt) {
    evt.preventDefault();
    if (evt.clipboardData.getData('logicparts/json')) {
      //console.log(evt.clipboardData.getData('logicparts/json'));
      loadActiveContainer(JSON.parse(evt.clipboardData.getData('logicparts/json')).Elements);
    } else {
      // Lets see if they pasted a proper LogicParts format atleast
      if (evt.clipboardData.getData('text')) {
        let jsonObj = JSON.parse(evt.clipboardData.getData('text'));
        if (jsonObj?.LogicParts && jsonObj?.Paste) {
          console.log("We got a paste of a general text object that is valid");
          loadActiveContainer(jsonObj.Elements);
        }
      }
    }
  });

  /*
      KEYBOARD EVENTS
   */
  window.addEventListener('keydown', function (evt) {
    logicEngine.Key_Press(evt);
  }, false);

  window.addEventListener('keyup', function (evt) {
    logicEngine.Key_Up(evt);
  }, false);

  /*
      MOUSE EVENTS
   */
  window.addEventListener('mouseup', function (evt) {
    let rcm = document.getElementById("RightClickMenu");
    rcm.style.display = "none";
    let tfms = document.getElementsByClassName("top-menu-div");
    for (let a = 0; a < tfms.length; a++) {
      tfms[a].style.display = "none";
    }
  }, false);

  lCanvasElement.addEventListener('mousedown', function (evt) {
    logicEngine.Mouse_Down(evt);
  }, false);

  lCanvasElement.addEventListener('mouseup', function (evt) {
    logicEngine.Mouse_Up(evt);
  }, false);

  window.addEventListener('mousemove', function (evt) {
    logicEngine.Mouse_Move(evt);
  }, false);


  /*
      WINDOW CONTROLS
   */
  let btn_CloseWelcome = document.getElementById("btn_CloseWelcome");
  btn_CloseWelcome.addEventListener('click', function (evt) {
    let WelcomeScreen = document.getElementById("WelcomeWindow");
    let DarkOverlay = document.getElementById("darkout-overlay");
    WelcomeScreen.style.display = "none";
    DarkOverlay.style.display = "none";
    let chk_dontDisplayWelcome = document.getElementById("chk_dontDisplayWelcome");
    if (chk_dontDisplayWelcome.checked) {
      setCookie("hidewelcomescreen", "true", 3600);
    }
  }, false);

  let btn_CreateIC_Cancel = document.getElementById("btn_CreateIC_Cancel");
  btn_CreateIC_Cancel.addEventListener('click', function (evt) {
    let CreateICBox = document.getElementById("CreateICBox");
    CreateICBox.style.display = "none";
  });

  let btn_CreateIC_Create = document.getElementById("btn_CreateIC_Create");
  btn_CreateIC_Create.addEventListener('click', function (evt) {
    let CreateICBox = document.getElementById("CreateICBox");
    let ICName = document.getElementById("ICName");
    let ICDescription = document.getElementById("ICDescription");
    createIC(logicEngine.ActiveContainer, ICName.value, ICDescription.value);
    CreateICBox.style.display = "none";
  });

  let ICName = document.getElementById("ICName");
  let ICDescription = document.getElementById("ICDescription");

  ICName.addEventListener('input', function (evt) {
    btn_CreateIC_Create.disabled = true;
    if (ICName.value.length > 0 && ICDescription.value.length > 0) btn_CreateIC_Create.disabled = false;
  });

  ICDescription.addEventListener('input', function (evt) {
    btn_CreateIC_Create.disabled = true;
    if (ICName.value.length > 0 && ICDescription.value.length > 0) btn_CreateIC_Create.disabled = false;
  });

  let btn_SaveDesign = document.getElementById("btn_SaveDesign");
  btn_SaveDesign.addEventListener('click', function (evt) {
    let DesignName = document.getElementById("saveName");
    let savestate = createSaveState(logicEngine.ActiveContainer);
    savestate.Name = DesignName.value;
    let saveWindow = document.getElementById("SaveWindow");
    saveWindow.style.display = "none";
    download(savestate.Name + ".LogicParts", savestate);
  });

  let btn_Save_Cancel = document.getElementById("btn_CancelSave");
  btn_Save_Cancel.addEventListener('click', function (evt) {
    let saveWindow = document.getElementById("SaveWindow");
    saveWindow.style.display = "none";
  });

  let file_Load = document.getElementById("file_Load");
  let tfm_Open = document.getElementById("tfm_Open");

  file_Load.addEventListener('change', function (evt) {
    let fread = new FileReader();
    fread.onload = (function (theFile) {
      return function (e) {
        try {
          let restoredata = JSON.parse(e.target.result);

          loadresult = loadsave(restoredata);
          if (!loadresult) {
            switch (loadresult) {
              case -1:
                alert("Invalid LogicParts file!");
                break;
              case -2:
                alert("The version of MatCat BrowserLogic cannot open this save version!");
                break;
              default:
                alert("Bad save file!");
                break;
            }
          }
        } catch (ex) {
          alert("Bad file! " + ex);
          console.log(ex);
        }
      }
    })(evt.target.files[0]);
    fread.readAsText(evt.target.files[0]);
  }, false);


  let in_GridSize = document.getElementById("in_GridSize");
  in_GridSize.addEventListener("change", function (evt) {
    logicEngine.Settings.GridSize = parseInt(in_GridSize.value);
    logicEngine.Resize("");
    SaveSettings();
    //setTimeout(function(){hideMenus()},10);
  });

  let helpWindow = document.getElementById("HelpWindow");
  let helpWindow_Close = helpWindow.getElementsByClassName("CloseWindow")[0];
  helpWindow_Close.addEventListener("click", function (evt) {
    HideHelp();
  });


  let leftmenu = document.getElementById("left-menu");
  let propwin = document.getElementById("PropertiesBox");
  lCanvasElement.addEventListener("contextmenu", function (evt) {
    showRCM(evt)
  });
  leftmenu.addEventListener("contextmenu", function (evt) {
    showRCM(evt)
  });
  propwin.addEventListener("contextmenu", function (evt) {
    showRCM(evt)
  });

  let topbar = document.getElementById("top-bar");
  topbar.addEventListener("contextmenu", function (evt) {
    evt.preventDefault();
  });
}