public CHAR_INFO[] ReadBufferLines(int top, int count)
{
var result = new CHAR_INFO[BufferWidth * count];
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var readBufferSize = new COORD {
X = (short)BufferWidth,
Y = (short)count};
var readBufferCoord = new COORD {X = 0, Y = 0};
var readRegion = new SMALL_RECT
{
Top = (short)top,
Left = 0,
Bottom = (short)(top + count),
Right = (short)(BufferWidth - 1)
};
NativeMethods.ReadConsoleOutput(handle, result,
readBufferSize, readBufferCoord, ref readRegion);
return result;
}
public static extern bool ReadConsoleOutput(IntPtr consoleOutput, [Out] CHAR_INFO[] buffer, COORD bufferSize, COORD bufferCoord, ref SMALL_RECT readRegion);
public void ScrollBuffer(int lines)
{
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var scrollRectangle = new SMALL_RECT
{
Top = (short) lines,
Left = 0,
Bottom = (short)(Console.BufferHeight - 1),
Right = (short)Console.BufferWidth
};
var destinationOrigin = new COORD {X = 0, Y = 0};
var fillChar = new CHAR_INFO(' ', Console.ForegroundColor, Console.BackgroundColor);
NativeMethods.ScrollConsoleScreenBuffer(handle, ref scrollRectangle, IntPtr.Zero, destinationOrigin, ref fillChar);
}
public static extern bool WriteConsoleOutput(IntPtr consoleOutput, CHAR_INFO[] buffer, COORD bufferSize, COORD bufferCoord, ref SMALL_RECT writeRegion);
public void WriteBufferLines(CHAR_INFO[] buffer, ref int top, bool ensureBottomLineVisible)
{
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
int bufferWidth = Console.BufferWidth;
int bufferLineCount = buffer.Length / bufferWidth;
if ((top + bufferLineCount) > Console.BufferHeight)
{
var scrollCount = (top + bufferLineCount) - Console.BufferHeight;
ScrollBuffer(scrollCount);
top -= scrollCount;
}
var bufferSize = new COORD
{
X = (short) bufferWidth,
Y = (short) bufferLineCount
};
var bufferCoord = new COORD {X = 0, Y = 0};
var bottom = top + bufferLineCount - 1;
var writeRegion = new SMALL_RECT
{
Top = (short) top,
Left = 0,
Bottom = (short) bottom,
Right = (short) (bufferWidth - 1)
};
NativeMethods.WriteConsoleOutput(handle, buffer,
bufferSize, bufferCoord, ref writeRegion);
// Now make sure the bottom line is visible
if (ensureBottomLineVisible &&
(bottom >= (Console.WindowTop + Console.WindowHeight)))
{
Console.CursorTop = bottom;
}
}
public static extern bool ScrollConsoleScreenBuffer(IntPtr hConsoleOutput,
ref SMALL_RECT lpScrollRectangle,
IntPtr lpClipRectangle,
COORD dwDestinationOrigin,
ref CHAR_INFO lpFill);
public static extern bool ReadConsoleOutput(IntPtr consoleOutput, [Out] CHAR_INFO[] buffer, COORD bufferSize, COORD bufferCoord, ref SMALL_RECT readRegion);
public static extern bool WriteConsoleOutput(IntPtr consoleOutput, CHAR_INFO[] buffer, COORD bufferSize, COORD bufferCoord, ref SMALL_RECT writeRegion);
public static extern bool ScrollConsoleScreenBuffer(IntPtr hConsoleOutput,
ref SMALL_RECT lpScrollRectangle,
IntPtr lpClipRectangle,
COORD dwDestinationOrigin,
ref CHAR_INFO lpFill);