public static unsafe void SetWindowSize(int width, int height)
{
if (width <= 0)
throw new ArgumentOutOfRangeException(nameof(width), width, SR.ArgumentOutOfRange_NeedPosNum);
if (height <= 0)
throw new ArgumentOutOfRangeException(nameof(height), height, SR.ArgumentOutOfRange_NeedPosNum);
// Get the position of the current console window
Interop.Kernel32.CONSOLE_SCREEN_BUFFER_INFO csbi = GetBufferInfo();
// If the buffer is smaller than this new window size, resize the
// buffer to be large enough. Include window position.
bool resizeBuffer = false;
Interop.Kernel32.COORD size = new Interop.Kernel32.COORD();
size.X = csbi.dwSize.X;
size.Y = csbi.dwSize.Y;
if (csbi.dwSize.X < csbi.srWindow.Left + width)
{
if (csbi.srWindow.Left >= short.MaxValue - width)
throw new ArgumentOutOfRangeException(nameof(width), SR.ArgumentOutOfRange_ConsoleWindowBufferSize);
size.X = (short)(csbi.srWindow.Left + width);
resizeBuffer = true;
}
if (csbi.dwSize.Y < csbi.srWindow.Top + height)
{
if (csbi.srWindow.Top >= short.MaxValue - height)
throw new ArgumentOutOfRangeException(nameof(height), SR.ArgumentOutOfRange_ConsoleWindowBufferSize);
size.Y = (short)(csbi.srWindow.Top + height);
resizeBuffer = true;
}
if (resizeBuffer)
{
if (!Interop.Kernel32.SetConsoleScreenBufferSize(OutputHandle, size))
throw Win32Marshal.GetExceptionForWin32Error(Marshal.GetLastWin32Error());
}
Interop.Kernel32.SMALL_RECT srWindow = csbi.srWindow;
// Preserve the position, but change the size.
srWindow.Bottom = (short)(srWindow.Top + height - 1);
srWindow.Right = (short)(srWindow.Left + width - 1);
if (!Interop.Kernel32.SetConsoleWindowInfo(OutputHandle, true, &srWindow))
{
int errorCode = Marshal.GetLastWin32Error();
// If we resized the buffer, un-resize it.
if (resizeBuffer)
{
Interop.Kernel32.SetConsoleScreenBufferSize(OutputHandle, csbi.dwSize);
}
// Try to give a better error message here
Interop.Kernel32.COORD bounds = Interop.Kernel32.GetLargestConsoleWindowSize(OutputHandle);
if (width > bounds.X)
throw new ArgumentOutOfRangeException(nameof(width), width, SR.Format(SR.ArgumentOutOfRange_ConsoleWindowSize_Size, bounds.X));
if (height > bounds.Y)
throw new ArgumentOutOfRangeException(nameof(height), height, SR.Format(SR.ArgumentOutOfRange_ConsoleWindowSize_Size, bounds.Y));
throw Win32Marshal.GetExceptionForWin32Error(errorCode);
}
}
[System.Security.SecuritySafeCritical] // auto-generated
public static void SetBufferSize(int width, int height)
{
// Ensure the new size is not smaller than the console window
Interop.Kernel32.CONSOLE_SCREEN_BUFFER_INFO csbi = GetBufferInfo();
Interop.Kernel32.SMALL_RECT srWindow = csbi.srWindow;
if (width < srWindow.Right + 1 || width >= short.MaxValue)
throw new ArgumentOutOfRangeException(nameof(width), width, SR.ArgumentOutOfRange_ConsoleBufferLessThanWindowSize);
if (height < srWindow.Bottom + 1 || height >= short.MaxValue)
throw new ArgumentOutOfRangeException(nameof(height), height, SR.ArgumentOutOfRange_ConsoleBufferLessThanWindowSize);
Interop.Kernel32.COORD size = new Interop.Kernel32.COORD();
size.X = (short)width;
size.Y = (short)height;
if (!Interop.Kernel32.SetConsoleScreenBufferSize(OutputHandle, size))
{
throw Win32Marshal.GetExceptionForWin32Error(Marshal.GetLastWin32Error());
}
}
public static void SetCursorPosition(int left, int top)
{
// Note on argument checking - the upper bounds are NOT correct
// here! But it looks slightly expensive to compute them. Let
// Windows calculate them, then we'll give a nice error message.
if (left < 0 || left >= short.MaxValue)
throw new ArgumentOutOfRangeException(nameof(left), left, SR.ArgumentOutOfRange_ConsoleBufferBoundaries);
if (top < 0 || top >= short.MaxValue)
throw new ArgumentOutOfRangeException(nameof(top), top, SR.ArgumentOutOfRange_ConsoleBufferBoundaries);
Contract.EndContractBlock();
IntPtr hConsole = OutputHandle;
Interop.Kernel32.COORD coords = new Interop.Kernel32.COORD();
coords.X = (short)left;
coords.Y = (short)top;
if (!Interop.Kernel32.SetConsoleCursorPosition(hConsole, coords))
{
// Give a nice error message for out of range sizes
int errorCode = Marshal.GetLastWin32Error();
Interop.Kernel32.CONSOLE_SCREEN_BUFFER_INFO csbi = GetBufferInfo();
if (left < 0 || left >= csbi.dwSize.X)
throw new ArgumentOutOfRangeException(nameof(left), left, SR.ArgumentOutOfRange_ConsoleBufferBoundaries);
if (top < 0 || top >= csbi.dwSize.Y)
throw new ArgumentOutOfRangeException(nameof(top), top, SR.ArgumentOutOfRange_ConsoleBufferBoundaries);
throw Win32Marshal.GetExceptionForWin32Error(errorCode);
}
}
public static void Clear()
{
Interop.Kernel32.COORD coordScreen = new Interop.Kernel32.COORD();
Interop.Kernel32.CONSOLE_SCREEN_BUFFER_INFO csbi;
bool success;
int conSize;
IntPtr hConsole = OutputHandle;
if (hConsole == s_InvalidHandleValue)
throw new IOException(SR.IO_NoConsole);
// get the number of character cells in the current buffer
// Go through my helper method for fetching a screen buffer info
// to correctly handle default console colors.
csbi = GetBufferInfo();
conSize = csbi.dwSize.X * csbi.dwSize.Y;
// fill the entire screen with blanks
int numCellsWritten = 0;
success = Interop.Kernel32.FillConsoleOutputCharacter(hConsole, ' ',
conSize, coordScreen, out numCellsWritten);
if (!success)
throw Win32Marshal.GetExceptionForWin32Error(Marshal.GetLastWin32Error());
// now set the buffer's attributes accordingly
numCellsWritten = 0;
success = Interop.Kernel32.FillConsoleOutputAttribute(hConsole, csbi.wAttributes,
conSize, coordScreen, out numCellsWritten);
if (!success)
throw Win32Marshal.GetExceptionForWin32Error(Marshal.GetLastWin32Error());
// put the cursor at (0, 0)
success = Interop.Kernel32.SetConsoleCursorPosition(hConsole, coordScreen);
if (!success)
throw Win32Marshal.GetExceptionForWin32Error(Marshal.GetLastWin32Error());
}
public static unsafe void MoveBufferArea(int sourceLeft, int sourceTop,
int sourceWidth, int sourceHeight, int targetLeft, int targetTop,
char sourceChar, ConsoleColor sourceForeColor,
ConsoleColor sourceBackColor)
{
if (sourceForeColor < ConsoleColor.Black || sourceForeColor > ConsoleColor.White)
throw new ArgumentException(SR.Arg_InvalidConsoleColor, nameof(sourceForeColor));
if (sourceBackColor < ConsoleColor.Black || sourceBackColor > ConsoleColor.White)
throw new ArgumentException(SR.Arg_InvalidConsoleColor, nameof(sourceBackColor));
Contract.EndContractBlock();
Interop.Kernel32.CONSOLE_SCREEN_BUFFER_INFO csbi = GetBufferInfo();
Interop.Kernel32.COORD bufferSize = csbi.dwSize;
if (sourceLeft < 0 || sourceLeft > bufferSize.X)
throw new ArgumentOutOfRangeException(nameof(sourceLeft), sourceLeft, SR.ArgumentOutOfRange_ConsoleBufferBoundaries);
if (sourceTop < 0 || sourceTop > bufferSize.Y)
throw new ArgumentOutOfRangeException(nameof(sourceTop), sourceTop, SR.ArgumentOutOfRange_ConsoleBufferBoundaries);
if (sourceWidth < 0 || sourceWidth > bufferSize.X - sourceLeft)
throw new ArgumentOutOfRangeException(nameof(sourceWidth), sourceWidth, SR.ArgumentOutOfRange_ConsoleBufferBoundaries);
if (sourceHeight < 0 || sourceTop > bufferSize.Y - sourceHeight)
throw new ArgumentOutOfRangeException(nameof(sourceHeight), sourceHeight, SR.ArgumentOutOfRange_ConsoleBufferBoundaries);
// Note: if the target range is partially in and partially out
// of the buffer, then we let the OS clip it for us.
if (targetLeft < 0 || targetLeft > bufferSize.X)
throw new ArgumentOutOfRangeException(nameof(targetLeft), targetLeft, SR.ArgumentOutOfRange_ConsoleBufferBoundaries);
if (targetTop < 0 || targetTop > bufferSize.Y)
throw new ArgumentOutOfRangeException(nameof(targetTop), targetTop, SR.ArgumentOutOfRange_ConsoleBufferBoundaries);
// If we're not doing any work, bail out now (Windows will return
// an error otherwise)
if (sourceWidth == 0 || sourceHeight == 0)
return;
// Read data from the original location, blank it out, then write
// it to the new location. This will handle overlapping source and
// destination regions correctly.
// Read the old data
Interop.Kernel32.CHAR_INFO[] data = new Interop.Kernel32.CHAR_INFO[sourceWidth * sourceHeight];
bufferSize.X = (short)sourceWidth;
bufferSize.Y = (short)sourceHeight;
Interop.Kernel32.COORD bufferCoord = new Interop.Kernel32.COORD();
Interop.Kernel32.SMALL_RECT readRegion = new Interop.Kernel32.SMALL_RECT();
readRegion.Left = (short)sourceLeft;
readRegion.Right = (short)(sourceLeft + sourceWidth - 1);
readRegion.Top = (short)sourceTop;
readRegion.Bottom = (short)(sourceTop + sourceHeight - 1);
bool r;
fixed (Interop.Kernel32.CHAR_INFO* pCharInfo = data)
r = Interop.Kernel32.ReadConsoleOutput(OutputHandle, pCharInfo, bufferSize, bufferCoord, ref readRegion);
if (!r)
throw Win32Marshal.GetExceptionForWin32Error(Marshal.GetLastWin32Error());
// Overwrite old section
Interop.Kernel32.COORD writeCoord = new Interop.Kernel32.COORD();
writeCoord.X = (short)sourceLeft;
Interop.Kernel32.Color c = ConsoleColorToColorAttribute(sourceBackColor, true);
c |= ConsoleColorToColorAttribute(sourceForeColor, false);
short attr = (short)c;
int numWritten;
for (int i = sourceTop; i < sourceTop + sourceHeight; i++)
{
writeCoord.Y = (short)i;
r = Interop.Kernel32.FillConsoleOutputCharacter(OutputHandle, sourceChar, sourceWidth, writeCoord, out numWritten);
Debug.Assert(numWritten == sourceWidth, "FillConsoleOutputCharacter wrote the wrong number of chars!");
if (!r)
throw Win32Marshal.GetExceptionForWin32Error(Marshal.GetLastWin32Error());
r = Interop.Kernel32.FillConsoleOutputAttribute(OutputHandle, attr, sourceWidth, writeCoord, out numWritten);
if (!r)
throw Win32Marshal.GetExceptionForWin32Error(Marshal.GetLastWin32Error());
}
// Write text to new location
Interop.Kernel32.SMALL_RECT writeRegion = new Interop.Kernel32.SMALL_RECT();
writeRegion.Left = (short)targetLeft;
writeRegion.Right = (short)(targetLeft + sourceWidth);
writeRegion.Top = (short)targetTop;
writeRegion.Bottom = (short)(targetTop + sourceHeight);
fixed (Interop.Kernel32.CHAR_INFO* pCharInfo = data)
Interop.Kernel32.WriteConsoleOutput(OutputHandle, pCharInfo, bufferSize, bufferCoord, ref writeRegion);
}
internal static extern bool SetConsoleScreenBufferSize(IntPtr hConsoleOutput, Interop.Kernel32.COORD size);
