[PATCH 1/2] Cygwin: console: Fix SIGWINCH handling in Win7.
Takashi Yano
takashi.yano@nifty.ne.jp
Thu Feb 18 09:01:27 GMT 2021
- If ENABLE_VIRTUAL_TERMINAL_INPUT is not set, changing window height
does not generate WINDOW_BUFFER_SIZE_EVENT. This happens if console
is in the legacy mode. Therefore, with this patch, the windows size
is checked every time in cons_master_thread() if the cosole is in
the legacy mode.
---
winsup/cygwin/fhandler_console.cc | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/winsup/cygwin/fhandler_console.cc b/winsup/cygwin/fhandler_console.cc
index 5053cb053..4dee506dd 100644
--- a/winsup/cygwin/fhandler_console.cc
+++ b/winsup/cygwin/fhandler_console.cc
@@ -223,6 +223,21 @@ fhandler_console::cons_master_thread (handle_set_t *p, tty *ttyp)
ReleaseMutex (p->input_mutex);
return;
}
+ /* If ENABLE_VIRTUAL_TERMINAL_INPUT is not set, changing
+ window height does not generate WINDOW_BUFFER_SIZE_EVENT.
+ Therefore, check windows size every time here. */
+ if (!wincap.has_con_24bit_colors () || con_is_legacy)
+ {
+ SHORT y = con.dwWinSize.Y;
+ SHORT x = con.dwWinSize.X;
+ con.fillin (p->output_handle);
+ if (y != con.dwWinSize.Y || x != con.dwWinSize.X)
+ {
+ con.scroll_region.Top = 0;
+ con.scroll_region.Bottom = -1;
+ ttyp->kill_pgrp (SIGWINCH);
+ }
+ }
for (i = 0; i < total_read; i++)
{
const char c = input_rec[i].Event.KeyEvent.uChar.AsciiChar;
--
2.30.0
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