Hi,

Anyone can give me solutions onhow to get the status of Win32_OperatingSystem class using C++.

Thanks,

Dodi

Thanks Sasha! I've done it. But there could be shorter process in getting the status of win32_operatingSystem class?

I see. I am getting the OS status firstbefore I can run the other functions. BTW, Sasha, I was wondering if I canreturn the OS status as process exit code? Because this information will be used by a third party for automation purposes. If you can picture, this is how I do it: from the main(), I made first the WMI to access the win32_OperatingSystem get the details up to step 7 and clean-up process. This is followed by my application before the main() exits.

main() { WMI Steps 1 to 7,cleanup,MyApplication}

Thanks.

What do you mean by "OS status"?

Operating System status from Win32_OperatingSystem.

Yes, the Status field (string) of the Win32_OperatingSystem class. I can access now the Win32_OperatingSystem class and display the status.By the way, how would I insert my function? First, I need to connect inorder to check the status. if the status is ok/ready then terminate program else check if it isa timeout. If timeout return something else run my function then check the status again until successful. Thanks.

I'm not sure what you expect as an answer. Do you expect us to write code for you?

No need, I have figured it out. Well, thanks for the help.

Hi Sasha,

I already know how to get the status of Win32_OperatingSystem. What command or how do I make conditional statements to check whether it maches the compared statement? Based from the msdn.microsoft.com:

I put blank because I'm still searching for the command to use. Is the format correct? Thanks.

hr is the COM error code that indicates whether you actually succeeded at retrieving the Status property. It doesn't convey the contents of the Status property, just the fact that you have or haven't successfully retrieved it.

vtStat in your code is the variant that contains the property value. Check out the documentation for the VARIANT structure to see how to read a string value from it.

Hi Sasha,

I have revised my code below:

//getting data

IWbemClassObject *pclsObj = NULL;
ULONG uReturn = 0;
int nResult = 0;

while (pEnumerator && nResult != 3)
{
HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1,
&pclsObj, &uReturn);

if(0 == uReturn)
{
break;
}

for (;
{
VARIANT vtStat;

// Get the value of the status property
BSTR strClsProperty = SysAllocString(L"Status");
hr = pclsObj->Get(strClsProperty, 0, &vtStat, 0, 0);
SysFreeString(strClsProperty);

_bstr_t bstrStat = &vtStat;
char * strStat = (char *) bstrStat;

if (strStat = "OK"){
nResult;
break;}

DWORD dwStart = GetTickCount();
DWORD dwTimeout = num1;//num1 will be from thechar **argv in the int main()

if (GetTickCount() - dwStart > dwTimeout){
nResult = 3;
break;}

Sleep(200);

VariantClear(&vtStat);
}
}

//clearing

I have observed that when i run this code in the batchfile, it will terminate until the status is ok or timeout even though i entered a certain time to sleep. It also depends on the workstation how fast it boot up. The faster the computer boots up the lesser the timeout will reflect. how would i synchronize this from the input or this will terminate until the OS is in OK status?

Thanks.

strStat = "OK" doesn't compare the strings. In fact, == doesn't compare the strings either, it only compares pointers. You need to use a string comparison function like strcmp to compare strings.

There are other issues with this code. I suggest that you review C and C++ programming. I'm not trying to be rude, but WMI is not the biggest of your concerns here.

Hi Sasha,

I have questions regarding getting WMI data from local computer. I have read in the MSDN how to get the WMI data, but when I check the time frame it takes time before it terminate the program. It was located in step 4, connectServer(). Is there other way to get rid of this time delay? Or are there way to get rid of this delay?

Thanks,

Dodi