PS - Context Menu

// ENABLE MENU
case ID_MENU_ENABLEMENU:
{
    HMENU hMenu = GetMenu(hWnd);
    UINT res = GetMenuState(hMenu, ID_MENU_DISABLED, MF_BYCOMMAND);
    if (res & MF_DISABLED)
    {
        EnableMenuItem(hMenu, ID_MENU_DISABLED, MF_BYCOMMAND | MF_ENABLED);
    }
    break;
}

// DELETE MENU
case ID_MENU_DELETE:
{
    HMENU hMenu = GetMenu(hWnd);
    DeleteMenu(hMenu, ID_MENU_DELETED, MF_BYCOMMAND);
    break;
}

// INSERT MENU
case ID_MENU_INSERT:
{
    HMENU hMenu = GetMenu(hWnd);
    if (GetMenuState(hMenu, ID_MENU_MESSAGEBOX + 1, MF_BYCOMMAND) == -1)
    {
        MENUITEMINFO mii;
        ZeroMemory(&mii, sizeof(mii));
        mii.cbSize = sizeof(mii);
        mii.fMask = MIIM_ID | MIIM_TYPE | MIIM_STATE;
        mii.wID = ID_MENU_MESSAGEBOX + 1;
        mii.fType = MFT_STRING;
        mii.dwTypeData = const_cast<char*>("Inserted");
        mii.fState = MFS_ENABLED;
        InsertMenuItem(hMenu, ID_MENU_ENABLEMENU, FALSE, &mii);
    }
    break;
}

// RIGHT BUTTON DOWN
case WM_RBUTTONDOWN:
{
    HMENU hMenu = LoadMenu(hInst, MAKEINTRESOURCE(IDC_WINDOWSPROJECT2));
    HMENU hSubMenu = GetSubMenu(hMenu, 2);
    POINT pt = { LOWORD(lParam), HIWORD(lParam) };
    ClientToScreen(hWnd, &pt);
    (hSubMenu, TPM_RIGHTBUTTON, pt.x, pt.y, 0, hWnd, NULL);
    DestroyMenu(hMenu);
}
break;