Using wmic to get info

user55

I'm making a QT application to retrieve info from OS.I'm trying to access wmic.exe directly ( i added the path Windows\System32\wbem\ previously in the code ) and i don't want to use it through cmd.The code works fine in Windows Vista/7 but doesnt work in Windows XP

Sample code :

@ QProcess process;
process.start(QString("wmic bios get serialnumber"));
process.waitForStarted();
process.waitForFinished();
qDebug()<<process.readAll();
system("pause");@

Note : I'm using QT 4.6

Any Ideas ?

SGaist

Hi and welcome to devnet,

Are you sure the command is available on XP and at the same place ?

user55

yes im pretty sure 100% u can even launch it from there and type the command and will work fine.I've been searching for a solution for days and no one is solving it.I'd appreciate it alott if u figure it out

andreyc

Are there any messages error, etc printed out ?
What if you remove system("pause"); line ?

user55

No error messages are printed out . In win xp it just shows the console dash like forever no results are shown and program never ends while in win vista/7 normal results are shown.

I tried removing system("pause") same issue.

SGaist

Did you read the standard out/error channels of QProcess ?

user55

There is literally 0 errors , that's why it's making me crazy

SGaist

Did you check whether waitForStarted and waitForFinished returns true ?

user55

yes so if i set a short time for waitforfinished lets say 2 sec , it will return empty result and program successfully ends

SGaist

What's the exit code ?

Fanaz

Solved same problem a year ago.
This is part of working function from my app:

@...
QString Arguments = "/node:" + IP + " " + Args + " get /format:list";
...
Process.setProcessChannelMode (QProcess::MergedChannels);
Process.start ("wmic");
Process.waitForStarted ();
Process.write (Arguments.toUtf8 ());
Process.closeWriteChannel();

while (Process.waitForReadyRead ())
{
while (Process.canReadLine())
{
...@