T

tab control: A control that is analogous to a set of dividers in a notebook or labels in a file cabinet. A tab control is used in a property sheet to provide a way for a user to move from one property page to another.
tagged regular expression: A a search string used to replace specific expressions. Each occurrence of a tagged regular expression is numbered according to its order in the Find What text box, and its replacement expression is \n, where 1 corresponds to the first tagged expression, 2 to the second tagged expression, and so on. You can have up to nine tagged expressions. See also regular expression.
TAPI: See Telephony Application Programming Interface.
target device: In Platform Builder, hardware that runs a Platform Builder custom platform. A target device is the hardware for which you are creating a platform and the hardware that is accessed by remote tools.
target platform: The system for which Windows CE is being adapted.
target-side component: An OEM's desktop computer that includes the target-side transport layer files, as well as hooks for the Windows CE tools to access. Platform Builder uses target-side components to communicate through the appropriate hardware connection from a desktop computer to a device. Platform Builder builds the target-side component into the operating system during the build phase. See host-side component.
Task Manager: An element of the Platform Builder Sample shell and the Minshell configuration. The Task Manager displays a window that lists all of the running top-level windows and enables you to switch to or stop an application. The shortcut keys ALT+TAB, CTRL+ESC, and CTRL+ALT+BACKSPACE invoke the window.
TCP/IP: See Transmission Control Protocol/Internet Protocol.
telephony: Telephone technology; the conversion of sound into electrical signals, its transmission to another location, and its reconversion to sound, with or without the use of connecting wires.
Telephony Application Programming Interface (TAPI): A set of functions in the Win32 API that lets a computer communicate directly with telephone systems. Windows CE supports TAPI version 1.5. It provides the basic functions, structures, and messages for establishing outgoing calls and controlling modems from a Windows CE–based device.
Telephony Service Provider (TSP): A modem driver that enables access to vendor-specific equipment through a standard device driver interface. See also Telephony Service Provider Interface (TSPI).
Telephony Service Provider Interface (TSPI): The external interface of a service provider to be implemented by vendors of telephony equipment. A telephony service provider accesses vendor-specific equipment through a standard device driver interface. Installing a service provider allows Windows CE–based applications that use elements of telephony to access the corresponding telephony equipment. See also Telephony Service Provider (TSPI).
TEXT: A Win32 macro that exists so that code can be compiled either as American Standard Code for Information Interchange (ASCII) text or as Unicode. For Windows CE, which supports only Unicode, the macro forces the compiler to convert ASCII characters to Unicode characters. For example, passing the ASCII string "Hello Windows CE!'' through the TEXT macro converts all characters in the string to 16-bit wide characters.
text normalization: Changing how words are pronounced based on their context.
text-to-speech (TTS): The conversion of text-based data into voice output by speech synthesis devices. Text-to-speech allows users to gain access to information audibly.
TFTP: See See Trivial File Transfer Protocol.
thread: A process that is part of a larger process or application. A thread can execute any part of an application's code, including code that is currently being executed by another thread. All threads share the virtual address space, global variables, and operating-system resources of their respective processes.
thread identifier: The unique identifier associated with a specific thread. Note that thread identification numbers are reused; they identify a thread only for the lifetime of that thread.
thread local storage (TLS): A Win32 mechanism that allows multiple threads of a process to store data that is unique for each thread. For example, a spreadsheet application can create a new instance of the same thread each time the user opens a new spreadsheet. A dynamic-link library that provides the functions for various spreadsheet operations can use thread local storage to save information about the current state of each spreadsheet.
thread synchronization: The method used to coordinate the execution of two or more threads. There are two states in synchronization, signaled and nonsignaled. Threads can either modify the state of the synchronization object or wait for the object to reach a signaled state.
thunk: A small section of code that performs a translation or conversion during a call or indirection. For example, a thunk is used to change the size or type of function parameters when calling between 16-bit and 32-bit code.
time-out value: A specified time interval used by a timer. Each time the time-out value elapses, Windows CE sends a WM_TIMER message to the window associated with the timer.
timer: An internal routine that causes the system to send a WM_TIMER message whenever a specified interval elapses.
timer event: A notification event that indicates a specified time has arrived, such as an appointment or meeting.
timestamping: The process of attaching the date and time to a message.
Time to Live: A header field for a packet sent over the Internet indicating how long the packet should be held.
TLB: See translation look-aside buffer.
TLS: See thread local storage.
toolbar: A row, column, or block of on-screen buttons or icons. When these buttons or icons are depressed, macros or certain functions of the application are activated.
toolbar editor: A resource editor that allows you to create toolbar resources and convert bitmaps into toolbar resources.
ToolTip: A small rectangular pop-up window that displays a brief description of a command bar button's purpose.
top-level project: A project that is not a dependent of any other project. A workspace has at least one top-level project. See also subproject.
top-level window: A window that has no parent window.
topmost window: A window with the WS_EX_TOPMOST style. A topmost window overlaps all other non-topmost windows.
touchpad: An input device that functions like a mouse to control cursor movements.
touch panel: See touch screen.
touch screen: A computer screen on which the user selects options, such as from a menu, by touching the screen. The touch screen is composed of an LCD and a resistive touch panel.
trackbar: A common control, also known as a slider control, that consists of a bar with tick marks on it and a slider, also known as a thumb. When a user drags the slider or clicks on either side of it, the slider moves in the appropriate direction, tick by tick.
traffic: The load carried by a communications link or channel.
translation look-aside buffer (TLB): A table used in a virtual memory system that lists the physical address page number associated with each virtual address page number. A TLB is used in conjunction with a cache whose tags are based on virtual addresses. The virtual address is presented simultaneously to the TLB and to the cache so that cache access and virtual-to-physical address translation can occur simultaneously.
Transmission Control Protocol/Internet Protocol (TCP/IP): A protocol developed by the Department of Defense for communications between computers. It is built into the UNIX system and has become the de facto standard for data transmission over networks, including the Internet. TCP and IP are transport and address protocols; TCP is used to establish a connection for data transmission, and IP defines the method for sending the data in packets.
transport component: A communication protocol, such as TCP/IP or Windows CE Services, that is used by Platform Manager to connect to a target device or a remote tool.
transport functions: A set of functions, exported by a mail transport service dynamic-link library, that are used to transfer mail messages from one location to another.
transport layer: A set of functions, structures, and interfaces that provide the link between Windows CE and the communications hardware on a target device.
tree-view control: A hierarchical display of labeled items. The top item in the hierarchy is called the root. If an item has other items below it in the hierarchy, it is also referred to as a parent. Items subordinate to parents are called children. Child items, when displayed, are indented below their parent item. The hierarchy may be expanded or collapsed at any level to display or hide child items.
Trivial File Transfer Protocol (TFTP): A formal set of format, timing, sequencing, and error control rules for transfering files to and from a remote computer system running the Trivial File Transfer Protocol (TFTP) service. The protocol can only be used for unidirectional transfer of files. It does not provide user authentication, although files do require read/write UNIX permissions.
TrueFFS/CE: See True Flash File System for Windows CE.
True Flash File System for Windows CE (TrueFFS/CE): A technology from M-Systems, Inc. that allows flash memory components to emulate magnetic disks and provides Windows CE compatibility. TrueFFS/CE makes either removable flash cards or on-board flash media work as a standard storage object. TrueFFS is the DOS and Windows version.
TrueType: A scalable outline font whose glyphs are stored as a collection of line and curve commands, plus a collection of hints.
TSP: See Telephony Service Provider.
TSPI: See Telephony Service Provider Interface.
.ttf file: A TrueType font file.
TTS: See text-to-speech.
type: In Platform Builder, a type defines a general type of feature without specifying a specific implementation. A type cannot be resolved until functionality is specified by selecting an implementation.