public string GetTextRange(int startPos, int endPos)
{
if (startPos > endPos)
{
return(String.Empty);
}
var rng = new InternalTextRange();
rng.Range.Min = startPos;
rng.Range.Max = endPos;
var ptr = Marshal.AllocHGlobal(Marshal.SizeOf(rng));
try
{
var ptr2 = Marshal.AllocHGlobal(endPos - startPos + 1);
rng.Text = ptr2;
try
{
Marshal.StructureToPtr(rng, ptr, false);
Ref.Send(Sci.SCI_GETTEXTRANGE, Sci.NIL, (Int32)ptr);
var ret = (InternalTextRange)Marshal.PtrToStructure(ptr, typeof(InternalTextRange));
return(Marshal.PtrToStringAnsi(ret.Text));
}
finally
{
Marshal.FreeHGlobal(ptr2);
}
}
finally
{
Marshal.DestroyStructure(ptr, typeof(InternalTextRange));
}
}
public string GetTextRangeUnicode(int startPos, int endPos)
{
if (startPos > endPos)
{
return(String.Empty);
}
if (endPos > Ref.Send(Sci.SCI_GETTEXTLENGTH) - 1)
{
endPos = Ref.Send(Sci.SCI_GETTEXTLENGTH);
}
var rng = new InternalTextRange();
rng.Range.Min = startPos;
rng.Range.Max = endPos;
var ptr = Marshal.AllocHGlobal(Marshal.SizeOf(rng));
try
{
var ptr2 = Marshal.AllocHGlobal(endPos - startPos + 1);
rng.Text = ptr2;
try
{
Marshal.StructureToPtr(rng, ptr, false);
var len = Ref.Send(Sci.SCI_GETTEXTRANGE, Sci.NIL, (Int32)ptr);
var ret = (InternalTextRange)Marshal.PtrToStructure(ptr, typeof(InternalTextRange));
var buffer = new byte[len];
for (var i = 0; i < len; i++)
{
buffer[i] = Marshal.ReadByte(ret.Text, i);
}
return(Encoding.UTF8.GetString(buffer).TrimEnd('\0'));
}
finally
{
Marshal.FreeHGlobal(ptr2);
}
}
finally
{
Marshal.DestroyStructure(ptr, typeof(InternalTextRange));
}
}
