CMenu myMenu; myMenu.LoadMenu(IDR_MYMENU); int count = myMenu.GetMenuItemCount();This code loads the menu resource with the ID IDR_MYMENU and then retrieves the number of items in the menu using the GetMenuItemCount function. The package library for CMenu and GetMenuItemCount is the Win32 API, which is a set of functions and constants provided by Microsoft for use in Windows applications.