static extern bool WriteConsoleOutput(
// SafeFileHandle hConsoleOutput,
IntPtr hConsoleOutput,
CharInfo[] lpBuffer,
Coord dwBufferSize,
Coord dwBufferCoord,
ref SmallRect lpWriteRegion);
private CharInfo[] GetBufferDiff(CharInfo[] screenBuffer, out SmallRect smallRect)
{
try
{
var rect = new SmallRect
{
Left = 0,
Top = 0,
Right = (short)graphics.Width,
Bottom = (short)graphics.Height
};
smallRect = rect;
if (previousScreenBuffer == null || previousScreenBuffer.Length != screenBuffer.Length)
{
return(screenBuffer);
}
for (var y = 0; y < graphics.Height; y++)
{
for (var x = 0; x < graphics.Width; x++)
{
var index = y * graphics.Width + x;
var c1 = screenBuffer[index];
var c2 = previousScreenBuffer[index];
if (c1.Attributes != c2.Attributes || c1.UnicodeChar != c2.UnicodeChar)
{
return(screenBuffer);
}
}
}
return(null);
}
finally
{
previousScreenBuffer = new CharInfo[screenBuffer.Length];
screenBuffer.CopyTo(previousScreenBuffer, 0);
}
}
