- dler, the <STRONG>resizeterm</STRONG> function <STRONG>ungetch</STRONG>'s a <STRONG>KEY_RESIZE</STRONG> which
- will be read on the next call to <STRONG>getch</STRONG>. 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.
-
- If the environment variables <STRONG>LINES</STRONG> or <STRONG>COLUMNS</STRONG> are set,
- this overrides the library's use of the window size
- obtained from the operating system. Thus, even if a SIG-
+ dler,
+
+ <STRONG>o</STRONG> on receipt of a SIGWINCH, the handler sets a flag
+
+ <STRONG>o</STRONG> which is tested in <STRONG>wgetch</STRONG> and <STRONG>doupdate</STRONG>,
+
+ <STRONG>o</STRONG> in turn, calling the <STRONG>resizeterm</STRONG> function,
+
+ <STRONG>o</STRONG> which <STRONG>ungetch</STRONG>'s a <STRONG>KEY_RESIZE</STRONG> which will be read on the
+ next call to <STRONG>wgetch</STRONG>.
+
+ The <STRONG>KEY_RESIZE</STRONG> alerts an application that the screen
+ size has changed, and that it should repaint special
+ features such as pads that cannot be done automati-
+ cally.
+
+ Calling <STRONG>resizeterm</STRONG> or <STRONG>resize_term</STRONG> directly from a sig-
+ nal handler is unsafe. This indirect method is used
+ to provide a safe way to resize the ncurses data
+ structures.
+
+ If the environment variables <STRONG>LINES</STRONG> or <STRONG>COLUMNS</STRONG> are set,
+ this overrides the library's use of the window size
+ obtained from the operating system. Thus, even if a SIG-