T
- tape drive
- A device that reads from and writes to a tape.
- tape volume
- A recording medium and its physical carrier.
- tension
- To move the tape to the end-of-medium marker and back to the beginning-of-medium marker in one command.
- termination handler
- A mechanism by which a developer ensures that a block of termination code is executed. A termination handler consists of a guarded body of code and a termination block. See also guarded body of code.
- thread
- The basic entity to which the operating system allocates CPU time. A thread can execute any part of the application's code, including a part currently being executed by another thread. All threads of a process share the virtual address space, global variables, and operating system resources of the process. See also process.
- thread affinity mask
- A bit vector in which each bit represents the processors that a thread is allowed to run on.
- thread local storage
- A storage method in which an index can be used by multiple threads of the same process to store and retrieve a different value for each thread. See also thread.
- time-out value
- The interval, in milliseconds, measured by a timer.
- timer
- An internal routine that causes the system to send a WM_TIMER message whenever a specified interval elapses.
- timer object
- An interprocess synchronization object whose state is set to signaled when the specified due time arrives. See also due time, synchronization object.
- time slice
- A unit of processor time (in clock ticks) allocated to a thread. See also thread.
- title bar
- A window component that displays an application-defined line of text. Typically, the text identifies the application or indicates the purpose of the window.
- TLS
- See thread local storage.
- top-down DIB
- A device-independent bitmap (DIB) whose origin lies at the top-left corner. See also bottom-up DIB.
- top-level window
- A window that has no parent window.
- topic name
- A string that identifies the type of data requested by a dynamic data exchange (DDE) client application.
- topmost window
- A window with the WS_EX_TOPMOST style. A topmost window overlaps all other non-topmost windows.
- transaction filter
- A flag that prevents the Data Exchange Management Library (DDEML) from passing an unwanted type of transaction to an application's dynamic data exchange (DDE) callback function. See also dynamic data exchange (DDE).
- transformation
- An algorithm that alters ("transforms") the size, orientation, and shape of objects.
- translation
- A transformation that shifts an object farther from or closer to the coordinate-space origin.
- tristimulus value
- The amounts of the three primary color stimuli necessary to produce a color match by additive color mixing.
- TrueType font
- A font whose glyphs are stored as a collection of line and curve commands plus a collection of hints. The system uses the line and curve commands to define the outline of the glyph's bitmap. The system uses the hints to adjust the length of the lines and shapes of the curves. These hints and the respective adjustments are based on the amount of scaling used to reduce or increase the size of the bitmap. See also bitmap, font, glyph.
- try block
- A guarded body of code in a try-except frame-based exception handler or try-finally termination handler. See also frame-based exception handler, guarded body of code, termination handler.