protected virtual bool PreProcessWmKeyDown_ShiftDown(ref Message m)
{
long pos = _hexBox._bytePos;
long sel = _hexBox._selectionLength;
long max = _hexBox._byteProvider.Length;
if (pos + sel + _hexBox._iHexMaxHBytes > max)
return true;
if (_bpiStart.Index <= pos)
{
sel += _hexBox._iHexMaxHBytes;
_hexBox.InternalSelect(pos, sel);
_hexBox.ScrollByteIntoView(pos + sel);
}
else
{
sel -= _hexBox._iHexMaxHBytes;
if (sel < 0)
{
pos = _bpiStart.Index;
sel = -sel;
}
else
{
pos += _hexBox._iHexMaxHBytes;
//sel -= _hexBox._iHexMaxHBytes;
}
_hexBox.InternalSelect(pos, sel);
_hexBox.ScrollByteIntoView();
}
return true;
}