bool
PortEnumerator::Next()
{
assert(!drivers_active.error());
TCHAR key_name[64];
while (drivers_active.enum_key(i++, key_name, 64)) {
RegistryKey device(drivers_active, key_name, true);
if (device.error())
continue;
TCHAR device_key[64];
if (device.get_value(_T("Key"), device_key, 64) &&
IsSerialPort(device_key) &&
device.get_value(_T("Name"), name.buffer(), name.MAX_SIZE)) {
display_name = name;
const size_t length = display_name.length();
TCHAR *const tail = display_name.buffer() + length;
const size_t remaining = display_name.MAX_SIZE - length - 3;
if (GetDeviceFriendlyName(device_key, tail + 2, remaining)) {
/* build a string in the form: "COM1: (Friendly Name)" */
tail[0] = _T(' ');
tail[1] = _T('(');
_tcscat(tail, _T(")"));
}
return true;
}
}
return false;
}
bool
PortEnumerator::Next()
{
assert(!drivers_active.error());
TCHAR key_name[64];
/* enumerate regular serial ports first */
while (drivers_active.EnumKey(i++, key_name, 64)) {
RegistryKey device(drivers_active, key_name, true);
if (device.error())
continue;
TCHAR device_key[64];
if (device.GetValue(_T("Key"), device_key, 64) &&
IsSerialPort(device_key) &&
device.GetValue(_T("Name"), name.buffer(), name.MAX_SIZE)) {
display_name = name;
const size_t length = display_name.length();
TCHAR *const tail = display_name.buffer() + length;
const size_t remaining = display_name.MAX_SIZE - length - 3;
if (GetDeviceFriendlyName(device_key, tail + 2, remaining)) {
/* build a string in the form: "COM1: (Friendly Name)" */
tail[0] = _T(' ');
tail[1] = _T('(');
_tcscat(tail, _T(")"));
}
return true;
}
}
/* virtual Bluetooth serial ports will not be found by the above;
the following is necessary to enumerate those */
while (bluetooth_ports.EnumKey(j++, key_name, 64)) {
RegistryKey port(bluetooth_ports, key_name, true);
if (port.error())
continue;
if (!port.GetValue(_T("Port"), name.buffer(), name.MAX_SIZE - 1))
continue;
/* the trailing colon is missing in this part of the registry */
name.Append(_T(':'));
display_name = name;
/* see if we can find a human-readable name */
const TCHAR *kn = key_name;
RegistryKey device(bluetooth_device, kn, true);
while (device.error() && *kn == _T('0')) {
/* turns out Windows CE strips four leading zeroes for the
Bluetooth\Device\* key (12 digits instead of 16); this is an
attempt to kludge around this weirdness */
++kn;
device = RegistryKey(bluetooth_device, kn, true);
}
if (!device.error()) {
const size_t length = display_name.length();
TCHAR *const tail = display_name.buffer() + length;
const size_t remaining = display_name.MAX_SIZE - length - 3;
if (device.GetValue(_T("name"), tail + 2, remaining)) {
/* build a string in the form: "COM1: (Friendly Name)" */
tail[0] = _T(' ');
tail[1] = _T('(');
_tcscat(tail, _T(")"));
}
}
return true;
}
return false;
}
