Как найти список параллельных портов?
functionPortExists(
const PortName:
string): Boolean;
var
hPort: HWND;
begin
Result := False;
hPort := CreateFile(PChar(PortName), {name}
GENERIC_
READ or GENERIC_
WRITE, {access attributes}
0, {no sharing}
nil, {no security}
OPEN_EXISTING, {creation action}
FILE_ATTRIBUTE_NORMAL
or
FILE_FLAG_OVERLAPPED, {attributes}
0); {no template}
if hPort <> INVALID_HANDLE_VALUE
then
begin
CloseHandle(hPort);
Result := True;
end;
end;
{Parallel Ports}
for i := 1
to 9
do
begin
if PortExists('LPT' + IntToStr(i))
then
List.Append('Ports: Printer Port (LPT' + IntTostr(i) + ')');
end;