procedure TTHEForm1.CapitaliseBuffer;
{Perform our own DIY conversion routine. Careful examination of
characters in the range 0 to 255 reveals that there are two uninterrupted
sequences of lowercase characters that have uppercase equivalents (and vice
versa). One sequence is in the lower ('ASCII') range (ie 'a' to 'z') -the
other sequence is in the higher range (ie à to ı). Also, for both sequences
the uppercase equivalent of a character is 32 characters LESS than the
lowercase version. So, therefore, the algorithm will be: IF character in
range 97 to 122 inclusive, OR if character in range 224 to 253 inclusive,
then character = the character 32 characters 'behind'...}
var
i: Integer;
begin
for i := 1 to sizeof(Buffer^) do
begin
if (((Ord(Buffer^[i]) >= 97) and (Ord(Buffer^[i]) <= 122))) then
begin
Buffer^[i] := Chr(Ord(Buffer^[i]) - 32);
end;
if (((Ord(Buffer^[i]) >= 224) and (Ord(Buffer^[i]) <= 253))) then
begin
Buffer^[i] := Chr(Ord(Buffer^[i]) - 32);
end;
end;
{we might be scanning through NULLs at the end of the last
buffer but this doesn't matter...}
end;