solution C++ (appel GetDiskPowerState et il itérer sur les disques physiques jusqu'à ce qu'il n'y a pas plus):
class AutoHandle
{
HANDLE mHandle;
public:
AutoHandle() : mHandle(NULL) { }
AutoHandle(HANDLE h) : mHandle(h) { }
HANDLE * operator &()
{
return &mHandle;
}
operator HANDLE() const
{
return mHandle;
}
~AutoHandle()
{
if (mHandle && mHandle != INVALID_HANDLE_VALUE)
::CloseHandle(mHandle);
}
};
bool
GetDiskPowerState(LPCTSTR disk, string & txt)
{
AutoHandle hFile = CreateFile(disk, 0, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
if (hFile && hFile != INVALID_HANDLE_VALUE)
{
BOOL powerState = FALSE;
const BOOL result = GetDevicePowerState(hFile, &powerState);
const DWORD err = GetLastError();
if (result)
{
if (powerState)
{
txt += disk;
txt += " : powered up\r\n";
}
else
{
txt += disk;
txt += " : sleeping\r\n";
}
return true;
}
else
{
txt += "Cannot get drive ";
txt += disk;
txt += "status\r\n";
return false;
}
}
return false;
}
string
GetDiskPowerState()
{
string text;
CString driveName;
bool result = true;
for (int idx= 0; result; idx++)
{
driveName.Format("\\\\.\\PhysicalDrive%d", idx);
result = GetDiskPowerState(driveName, text);
}
return text;
}
Merci, fonctionne comme un charme. – Jonx