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(initialize_w32_display): Detect when the console

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dimensions are insane, and default to 80x25 instead.
(w32_use_full_screen_buffer): default to NIL.
This commit is contained in:
Jason Rumney
2005-07-06 21:36:31 +00:00
parent 7ea8834e08
commit 3fb1d72bcb
2 changed files with 25 additions and 2 deletions
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6
src/ChangeLog
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@@ -1,3 +1,9 @@
2005-07-06 Jason Rumney <jasonr@gnu.org>
* w32console.c (initialize_w32_display): Detect when the console
dimensions are insane, and default to 80x25 instead.
(w32_use_full_screen_buffer): default to NIL.
2005-07-06 YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
* macterm.c (mac_draw_vertical_window_border): Use foreground of

21
src/w32console.c
View File

@@ -635,7 +635,24 @@ initialize_w32_display (void)
meta_key = 1;
char_attr_normal = info.wAttributes;
if (w32_use_full_screen_buffer)
/* Determine if the info returned by GetConsoleScreenBufferInfo
is realistic. Old MS Telnet servers used to only fill out
the dwSize portion, even modern one fill the whole struct with
garbage when using non-MS telnet clients. */
if ((w32_use_full_screen_buffer
&& (info.dwSize.Y < 20 || info.dwSize.Y > 100
|| info.dwSize.X < 40 || info.dwSize.X > 200))
|| (!w32_use_full_screen_buffer
&& (info.srWindow.Bottom - info.srWindow.Top < 20
|| info.srWindow.Bottom - info.srWindow.Top > 100
|| info.srWindow.Right - info.srWindow.Left < 40
|| info.srWindow.Right - info.srWindow.Left > 100)))
{
FRAME_LINES (SELECTED_FRAME ()) = 25;
SET_FRAME_COLS (SELECTED_FRAME (), 80);
}
else if (w32_use_full_screen_buffer)
{
FRAME_LINES (SELECTED_FRAME ()) = info.dwSize.Y; /* lines per page */
SET_FRAME_COLS (SELECTED_FRAME (), info.dwSize.X); /* characters per line */
@@ -691,7 +708,7 @@ This is desirable when running Emacs over telnet, and is the default.
A value of nil means use the current console window dimensions; this
may be preferrable when working directly at the console with a large
scroll-back buffer. */);
w32_use_full_screen_buffer = 1;
w32_use_full_screen_buffer = 0;
defsubr (&Sset_screen_color);
defsubr (&Sset_cursor_size);