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resizeterm(3X) resizeterm(3X) NAME is_term_resized, resize_term, resizeterm - change the curses terminal size SYNOPSIS #include <curses.h> bool is_term_resized(int lines, int columns); int resize_term(int lines, int columns); int resizeterm(int lines, int columns); DESCRIPTION This is an extension to the curses library. It provides callers with a hook into the ncurses data to resize windows, primarily for use by pro- grams running in an X Window terminal (e.g., xterm). The function re- sizeterm resizes the standard and current windows to the specified di- mensions, and adjusts other bookkeeping data used by the ncurses li- brary that record the window dimensions. Most of the work is done by the inner function resize_term. The outer function resizeterm adds bookkeeping for the SIGWINCH handler. When resizing the windows, resize_term blank-fills the areas that are ex- tended. The calling application should fill in these areas with appro- priate data. The resize_term function attempts to resize all windows. However, due to the calling convention of pads, it is not possible to resize these without additional interaction with the application. A support function is_term_resized is provided so that applications can check if the resize_term function would modify the window structures. It returns TRUE if the windows would be modified, and FALSE otherwise. RETURN VALUE Except as notes, these function return the integer ERR upon failure and OK on success. They will fail if either of the dimensions are less than or equal to zero, or if an error occurs while (re)allocating mem- ory for the windows. NOTES While these functions are intended to be used to support a signal han- dler (i.e., for SIGWINCH), care should be taken to avoid invoking them in a context where malloc or realloc may have been interrupted, since it uses those functions. If ncurses is configured to supply its own SIGWINCH handler, the re- sizeterm function ungetch's a KEY_RESIZE which will be read on the next call to getch. This is used to alert an application that the screen size has changed, and that it should repaint special features such as pads that cannot be done automatically. SEE ALSO wresize(3X). AUTHOR Thomas Dickey (from an equivalent function written in 1988 for BSD curses). resizeterm(3X)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | SEE ALSO | AUTHOR
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