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patch 8.1.0940: MS-Windows console resizing not handled properly

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Problem:    MS-Windows console resizing not handled properly.
Solution:   Handle resizing the console better. (Nobuhiro Takasaki,
            closes #3968, closes #3611)
This commit is contained in:
Bram Moolenaar
2019-02-17 15:00:52 +01:00
parent 3678f65d43
commit 78d21dae9c
5 changed files with 50 additions and 7 deletions
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48
src/os_win32.c
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@@ -1492,6 +1492,8 @@ handle_focus_event(INPUT_RECORD ir)
ui_focus_change((int)g_fJustGotFocus);
}
static void ResizeConBuf(HANDLE hConsole, COORD coordScreen);
/*
* Wait until console input from keyboard or mouse is available,
* or the time is up.
@@ -1657,11 +1659,18 @@ WaitForChar(long msec, int ignore_input)
handle_focus_event(ir);
else if (ir.EventType == WINDOW_BUFFER_SIZE_EVENT)
{
/* Only call shell_resized() when the size actually change to
* avoid the screen is cleard. */
if (ir.Event.WindowBufferSizeEvent.dwSize.X != Columns
|| ir.Event.WindowBufferSizeEvent.dwSize.Y != Rows)
COORD dwSize = ir.Event.WindowBufferSizeEvent.dwSize;
// Only call shell_resized() when the size actually change to
// avoid the screen is cleard.
if (dwSize.X != Columns || dwSize.Y != Rows)
{
CONSOLE_SCREEN_BUFFER_INFO csbi;
GetConsoleScreenBufferInfo(g_hConOut, &csbi);
dwSize.Y = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
ResizeConBuf(g_hConOut, dwSize);
shell_resized();
}
}
#ifdef FEAT_MOUSE
else if (ir.EventType == MOUSE_EVENT
@@ -6327,7 +6336,7 @@ write_chars(
* character was written, otherwise we get stuck. */
if (WriteConsoleOutputCharacterW(g_hConOut, unicodebuf, length,
coord, &cchwritten) == 0
|| cchwritten == 0)
|| cchwritten == 0 || cchwritten == (DWORD)-1)
cchwritten = 1;
}
else
@@ -6361,7 +6370,7 @@ write_chars(
* character was written, otherwise we get stuck. */
if (WriteConsoleOutputCharacter(g_hConOut, (LPCSTR)pchBuf, cbToWrite,
coord, &written) == 0
|| written == 0)
|| written == 0 || written == (DWORD)-1)
written = 1;
}
else
@@ -7707,7 +7716,7 @@ vtp_flag_init(void)
}
#ifndef FEAT_GUI_W32
#if !defined(FEAT_GUI_W32) || defined(PROTO)
static void
vtp_init(void)
@@ -7931,3 +7940,28 @@ is_conpty_stable(void)
{
return conpty_stable;
}
#if !defined(FEAT_GUI_W32) || defined(PROTO)
void
resize_console_buf(void)
{
CONSOLE_SCREEN_BUFFER_INFO csbi;
COORD coord;
SMALL_RECT newsize;
if (GetConsoleScreenBufferInfo(g_hConOut, &csbi))
{
coord.X = SRWIDTH(csbi.srWindow);
coord.Y = SRHEIGHT(csbi.srWindow);
SetConsoleScreenBufferSize(g_hConOut, coord);
newsize.Left = 0;
newsize.Top = 0;
newsize.Right = coord.X - 1;
newsize.Bottom = coord.Y - 1;
SetConsoleWindowInfo(g_hConOut, TRUE, &newsize);
SetConsoleScreenBufferSize(g_hConOut, coord);
}
}
#endif