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[WIN32CSR] Get rid of dynamic "LineBuffer": it wasn't being resized properly in all cases, causing corruption of Win32CsrApiHeap. Replaced with fixed buffer (painting a line with multiple TextOutW calls if necessary).

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svn path=/trunk/; revision=47163
This commit is contained in:
Jeffrey Morlan 2010-05-12 03:03:12 +00:00
parent 0a6ca40598
commit 3ffc64878c
1 changed files with 6 additions and 25 deletions
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31
reactos/subsystems/win32/csrss/win32csr/guiconsole.c
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@ -22,7 +22,6 @@ typedef struct GUI_CONSOLE_DATA_TAG
HFONT Font;
unsigned CharWidth;
unsigned CharHeight;
PWCHAR LineBuffer;
BOOL CursorBlinkOn;
BOOL ForceCursorOff;
CRITICAL_SECTION Lock;
@ -713,9 +712,6 @@ GuiConsoleHandleNcCreate(HWND hWnd, CREATESTRUCTW *Create)
InitializeCriticalSection(&GuiData->Lock);
GuiData->LineBuffer = (PWCHAR)HeapAlloc(Win32CsrApiHeap, HEAP_ZERO_MEMORY,
Console->Size.X * sizeof(WCHAR));
GuiData->Font = CreateFontW(LOWORD(GuiData->FontSize),
0, //HIWORD(GuiData->FontSize),
0,
@ -895,21 +891,22 @@ GuiConsolePaint(PCSRSS_CONSOLE Console,
for (Line = TopLine; Line <= BottomLine; Line++)
{
WCHAR LineBuffer[80];
From = ConioCoordToPointer(Buff, LeftChar, Line);
Start = LeftChar;
To = GuiData->LineBuffer;
To = LineBuffer;
for (Char = LeftChar; Char <= RightChar; Char++)
{
if (*(From + 1) != LastAttribute)
if (*(From + 1) != LastAttribute || (Char - Start == sizeof(LineBuffer) / sizeof(WCHAR)))
{
TextOutW(hDC,
(Start - Buff->ShowX) * GuiData->CharWidth,
(Line - Buff->ShowY) * GuiData->CharHeight,
GuiData->LineBuffer,
LineBuffer,
Char - Start);
Start = Char;
To = GuiData->LineBuffer;
To = LineBuffer;
Attribute = *(From + 1);
if (Attribute != LastAttribute)
{
@ -932,7 +929,7 @@ GuiConsolePaint(PCSRSS_CONSOLE Console,
TextOutW(hDC,
(Start - Buff->ShowX) * GuiData->CharWidth,
(Line - Buff->ShowY) * GuiData->CharHeight,
GuiData->LineBuffer,
LineBuffer,
RightChar - Start + 1);
}
@ -1809,22 +1806,6 @@ GuiApplyUserSettings(PCSRSS_CONSOLE Console, PGUI_CONSOLE_DATA GuiData, PConsole
windx = LOWORD(pConInfo->WindowSize);
windy = HIWORD(pConInfo->WindowSize);
if (windx > Console->Size.X)
{
PWCHAR LineBuffer = HeapAlloc(Win32CsrApiHeap, HEAP_ZERO_MEMORY, windx * sizeof(WCHAR));
if (LineBuffer)
{
HeapFree(Win32CsrApiHeap, 0, GuiData->LineBuffer);
GuiData->LineBuffer = LineBuffer;
}
else
{
LeaveCriticalSection(&ActiveBuffer->Header.Lock);
return;
}
}
if (windx != Console->Size.X || windy != Console->Size.Y)
{
/* resize window */