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Cygwin: console: Fix SIGWINCH handling in Win7. 

- 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.
This commit is contained in:
Takashi Yano via Cygwin-patches 2021-02-18 18:01:27 +09:00 committed by Corinna Vinschen
parent 038d4a78f9
commit 2b9219b4a5
1 changed files with 15 additions and 0 deletions
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15
winsup/cygwin/fhandler_console.cc
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@ -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;