private static void WriteBufferLines(CHAR_INFO[] buffer, ref int top)
{
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 writeRegion = new SMALL_RECT
{
Top = (short) top,
Left = 0,
Bottom = (short) (top + bufferLineCount - 1),
Right = (short) bufferWidth
};
NativeMethods.WriteConsoleOutput(handle, buffer,
bufferSize, bufferCoord, ref writeRegion);
}
private static void ScrollBuffer(int lines)
{
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var scrollRectangle = new SMALL_RECT
{
Top = (short) lines,
Left = 0,
Bottom = (short) (lines + 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);
}
private static void SetPrompt(string prompt)
{
if (string.IsNullOrEmpty(prompt))
return;
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var lineCount = 1 + prompt.Count(c => c == '\n');
if (lineCount > 1)
{
var options = new SetPSReadlineOption {ExtraPromptLineCount = lineCount - 1};
PSConsoleReadLine.SetOptions(options);
}
int bufferWidth = Console.BufferWidth;
var consoleBuffer = new CHAR_INFO[lineCount * bufferWidth];
int j = 0;
for (int i = 0; i < prompt.Length; i++, j++)
{
if (prompt[i] == '\n')
{
for (; j % Console.BufferWidth != 0; j++)
{
consoleBuffer[j] = new CHAR_INFO(' ', Console.ForegroundColor, Console.BackgroundColor);
}
Console.CursorTop += 1;
Console.CursorLeft = 0;
j -= 1; // We don't actually write the newline
}
else
{
consoleBuffer[j] = new CHAR_INFO(prompt[i], Console.ForegroundColor, Console.BackgroundColor);
Console.CursorLeft += 1;
}
}
var bufferSize = new COORD
{
X = (short) bufferWidth,
Y = (short) lineCount
};
var bufferCoord = new COORD {X = 0, Y = 0};
var writeRegion = new SMALL_RECT
{
Top = 0,
Left = 0,
Bottom = (short) (lineCount - 1),
Right = (short) bufferWidth
};
NativeMethods.WriteConsoleOutput(handle, consoleBuffer, bufferSize, bufferCoord, ref writeRegion);
}
public static extern bool WriteConsoleOutput(IntPtr consoleOutput, CHAR_INFO[] buffer, COORD bufferSize, COORD bufferCoord, ref SMALL_RECT writeRegion);
private static CHAR_INFO[] ReadBufferLines(int top, int count)
{
var result = new CHAR_INFO[Console.BufferWidth * count];
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var readBufferSize = new COORD {
X = (short)Console.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)(Console.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 static extern bool ScrollConsoleScreenBuffer(IntPtr hConsoleOutput,
ref SMALL_RECT lpScrollRectangle,
ref SMALL_RECT lpClipRectangle,
COORD dwDestinationOrigin,
ref CHAR_INFO lpFill);
static void Box(List<string> list)
{
int internalBoxWidth = Math.Min(Console.BufferWidth - 2, list.Max(e => e.Length));
int boxWidth = internalBoxWidth + 2;
int internalBoxHeight = list.Count;
int boxHeight = internalBoxHeight + 2;
var buffer = new CHAR_INFO[boxWidth * boxHeight];
buffer[0].UnicodeChar = '+';
buffer[boxWidth - 1].UnicodeChar = '+';
for (int i = 1; i < boxWidth - 1; i++)
{
buffer[i].UnicodeChar = '-';
}
for (int i = 0; i < list.Count; i++)
{
int rowStart = (i + 1) * boxWidth;
buffer[rowStart++].UnicodeChar = '|';
buffer[rowStart + internalBoxWidth].UnicodeChar = '|';
string s = list[i];
int j;
for (j = 0; j < s.Length; j++)
{
buffer[rowStart + j].UnicodeChar = s[j];
}
for (; j < internalBoxWidth; j++)
{
buffer[rowStart + j].UnicodeChar = ' ';
}
}
int lastRowStart = (boxHeight - 1) * boxWidth;
buffer[lastRowStart].UnicodeChar = '+';
for (int i = 1; i < boxWidth - 1; i++)
{
buffer[i + lastRowStart].UnicodeChar = '-';
}
buffer[lastRowStart + boxWidth - 1].UnicodeChar = '+';
for (int i = 0; i < buffer.Length; i++)
{
buffer[i].Attributes = (ushort)ConsoleColor.Blue |
((ushort)(ConsoleColor.DarkGreen) << 4);
if (i % 2 != 0)
{
buffer[i].Attributes |= 0xfff0;
}
}
var handle = NativeMethods.GetStdHandle((uint) StandardHandleId.Output);
var bufferSize = new COORD {X = (short)boxWidth, Y = (short)boxHeight};
var bufferCoord = new COORD {X = 0, Y = 0};
var writeRegion = new SMALL_RECT {
Top = 1,
Left = 1,
Bottom = (short)(1 + boxHeight),
Right = (short)(1 + boxWidth)};
Console.WriteLine("some random stuff");
Console.WriteLine("and more some random stuff");
Console.WriteLine("lorem ipsum blah blah");
Console.ReadKey();
var saveBuffer = new CHAR_INFO[buffer.Length];
NativeMethods.ReadConsoleOutput(handle, saveBuffer,
bufferSize, bufferCoord, ref writeRegion);
unsafe
{
fixed (CHAR_INFO* p = &buffer[0])
fixed (CHAR_INFO* sp = &saveBuffer[0])
{
NativeMethods.WriteConsoleOutput(handle, buffer,
bufferSize, bufferCoord, ref writeRegion);
Console.ReadKey();
NativeMethods.WriteConsoleOutput(handle, saveBuffer,
bufferSize, bufferCoord, ref writeRegion);
}
}
Console.ReadKey();
}
private static void WriteBufferLines(CHAR_INFO[] buffer, ref int top)
{
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 (bottom >= (Console.WindowTop + Console.WindowHeight))
{
Console.CursorTop = bottom;
}
}
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);