Thank you fatjuicymole for your reply.
i did tried that do .
below is the code i tried.
HANDLE h = SetupDiGetClassDevs(&GUID_CLASS_COMPORT,NULL,NULL, DIGCF_PRESENT | DIGCF_INTERFACEDEVICE);
if ( h == INVALID_HANDLE_VALUE )
{
qDebug ()<<"invalid";
}
else
{
qDebug ()<<"valid handle";
qDebug ()<<h;
}
Handle is valid .
can you please lead me further to proceed.
Sorry to be annoying because i am very to new Qt and windows programming
Thank you for your time.
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