How do you get a submenu to come out from a menu item?

I can't seem to find any tutorials on how to do this, but I want to add a submenu onto menu items, so that when the mouse hovers over it, another menu comes out from that. How would I do it?

I would search MSDN for submenus. They also have a mixed C#/C++ walkthrough which may or may not be helpful.

I use AppendMenu() to set up my menus, and then you just create another menu and set it as a child of another menu.

Code:

//Handles for menu
            MainMenu = CreateMenu();
            SubMenu = CreatePopupMenu();

            //File menu
            AppendMenu(MainMenu,MF_POPUP|MF_STRING,(UINT)SubMenu,"&File");
            AppendMenu(SubMenu,MF_POPUP,FILE_RESET,"Reset");
            AppendMenu(SubMenu,MF_SEPARATOR,NULL,NULL);
            AppendMenu(SubMenu,MF_POPUP,FILE_EXIT,"Exit");

            SubMenu = CreatePopupMenu();
            HMENU SubMenuTwo = CreatePopupMenu(); //create submenu
            AppendMenu(MainMenu,MF_POPUP,(UINT)SubMenu,"&View");
            AppendMenu(SubMenu,MF_POPUP|MF_STRING,EXTENDED,"Extended View");
            AppendMenu(SubMenu,MF_POPUP,(UINT)SubMenuTwo,"Reference");
               AppendMenu(SubMenuTwo,MF_POPUP,REF_OPEN,"Open References"); //this is the submenu and the 'parent' is "Reference"

            SubMenu = CreatePopupMenu();
            AppendMenu(MainMenu,MF_POPUP,(UINT)SubMenu,"&Options");
            AppendMenu(SubMenu,MF_POPUP,OPTIONS_CH,"Options Choices");

            SubMenu = CreatePopupMenu();
            AppendMenu(MainMenu,MF_POPUP,(UINT)SubMenu,"&Help");
            AppendMenu(SubMenu,MF_POPUP,ABOUT_ABOUT,"About");
            AppendMenu(SubMenu,MF_POPUP,INFO,"Info");

            //Make menu appear on screen
            SetMenu(hwnd,MainMenu);