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Atext windows3/18/2023 Later, the interface became deeply influenced by graphical user interfaces (GUI), adding pull-down menus, overlapping windows, dialog boxes and GUI widgets operated by mnemonics or keyboard shortcuts. They often used box-drawing characters in IBM's code page 437. Most often those programs used a blue background for the main screen, with white or yellow characters, although commonly they had also user color customization. A more precise cursor (per-pixel resolution) was achieved by regenerating the glyphs of characters used where the cursor was visible, at each mouse movement in real-time. However, not all terminals follow this standard, and many non-compatible but functionally equivalent sequences exist. Escape sequences may be supported for all three cases mentioned in the above section, allowing arbitrary cursor movements and color changes. Many TUI programming libraries are available to help developers build TUI applications.Īmerican National Standards Institute (ANSI) standard ANSI X3.64 defines a standard set of escape sequences that can be used to drive terminals to create TUIs (see ANSI escape code). Under Linux and other Unix-like systems, a program easily accommodates to any of the three cases because the same interface (namely, standard streams) controls the display and keyboard. This is the worst case, because software restrictions hinder the use of capabilities of a remote display device. The communication capabilities usually become reduced to a serial line or its emulation, possibly with few ioctl()s as an out-of-band channel in such cases as Telnet and Secure Shell. Certain functions of an advanced text mode, such as an own font uploading, almost certainly become unavailable. This usually supports programs which expect a real text mode display, but may run considerably slower. Examples are xterm for X Window System and win32 console (in a window mode) for Microsoft Windows. If not deterred by the operating system, a smart program may exploit the full power of a hardware text mode. This is a normal condition for a locally running application on various types of personal computers and mobile devices. A genuine text mode display, controlled by a video adapter or the central processor itself.The modern context of use is usually a terminal emulator.įrom text application's point of view, a text screen (and communications with it) can belong to one of three types (here ordered in order of decreasing accessibility): They may also use color and often structure the display using special graphical characters such as ┌ and ╣, referred to in Unicode as the "box drawing" set. Like GUIs, they may use the entire screen area and accept mouse and other inputs. ![]() In computing, text-based user interfaces ( TUI) (alternately terminal user interfaces, to reflect a dependence upon the properties of computer terminals and not just text), is a retronym describing a type of user interface (UI) common as an early form of human–computer interaction, before the advent of modern conventional graphical user interfaces (GUIs). Vim is a very widely used TUI text editor
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