What is use of toolbar in vc plus plus?

Answer 1

Toolbars are a graphical user component intended to augment an application's command menu (menu bar). Although the command menu contains all the commands available within the current context, it can be a chore drilling through sub-menus to get to the command you want -- assuming you know where the command exists within the menu hierarchy. Modern command menus will only show the most-used commands, using a special drop down to reveal lesser-used commands. And while accelerators (key-combos) do help speed things up it can still take time to become familiar with uncommon or little-used keystrokes.

Toolbars make it possible to display your most-used command icons in palettes, some of which may be customisable. Toolbars are typically dockable panes that can be detached or docked wherever you please. Even the Windows shell has toolbars which can be docked to the taskbar. These toolbars cannot be detached however, but the principal is largely the same: to provide quick access to the commands you use most often.