public Bitmap Screen(ref Rectangle bounds)
{
_newBitmap = CaptureScreen.CaptureDesktop();
if (_prevBitmap != null)
{
// Get the bounding box.
//
bounds = GetBoundingBoxForChanges();
if (bounds == Rectangle.Empty)
{
// Nothing has changed.
//
return(null);
}
// Get the minimum rectangular area
//
Bitmap diff = new Bitmap(bounds.Width, bounds.Height);
Graphics g = Graphics.FromImage(diff);
g.DrawImage(_newBitmap, 0, 0, bounds, GrahicsUnit.Pixel);
g.Dispose();
// Set the current bitmap as the previous to prepare
// for the next screen capture.
//
_prevBitmap = _newBitmap;
return(diff);
}
else
{
// Set the previous bitmap to the current to prepare
// for the next screen capture.
//
_prevBitmap = _newBitmap;
// Create a bounding rectangle.
//
bounds = new Rectangle(0, 0, _newBitmap.Width, _newBitmap.Height);
return(_newBitmap);
}
}
public Bitmap Cursor(ref int cursorX, ref int cursorY)
{
if (_newBitmap == null)
{
return(null);
}
else
{
Bitmap img = CaptureScreen.CaptureCursor(ref cursorX, ref cursorY);
if (img != null && cursorX < _newBitmap.Width && cursorY < _newBitmap.Height)
{
return(img);
}
else
{
return(null);
}
}
}
