c++ What does this error mean (C++)

[Shammikit]

Hello, im trying to display CPU information such as name and speed of it in C++ using QT. i have followed the guide in this link http://forums.codeguru.com/showthread.php?519933-Windows-SDK-How-to-get-the-processor-frequency and when i try to run it i get this error saying undefined reference to CallNtPowerInformation@20. i checked msdn for this which is this link : https://msdn.microsoft.com/en-us/library/windows/desktop/aa372675(v=vs.85).aspx and all they have VerifyProcessorPowerPolicyAc 20 This information level is not supported which i dnt understand as im pretty new to c++. im using QT creator 5.5, does the code have compatibility issues with QT? if someone could suggest what i should be looking for it would be great help.Thank you.

[Unimportant]

12 minutes ago, Shammikit said:

<snip>

It's a linker error. It compiled but the linker cannot find the implementation of the 'CallNtPowerInformation' function. A quick google search reveals you need to link in the library 'PowrProf.lib'.

[Shammikit]

2 minutes ago, Unimportant said:

It's a linker error. It compiled but the linker cannot find the implementation of the 'CallNtPowerInformation' function. A quick google search reveals you need to link in the library 'PowrProf.lib'.

do u mean this :

#pragma comment(lib, "Powrprof.lib")

[Unimportant]

2 minutes ago, Shammikit said:

do u mean this :

#pragma comment(lib, "Powrprof.lib")

That should work for MS Visual C++ but also make sure the actual file is available in the linker's search path.

[Shammikit]

4 minutes ago, Unimportant said:

That should work for MS Visual C++ but also make sure the actual file is available in the linker's search path.

is this the path that i should refer to ? C:\Qt\Qt5.5.1\5.5\mingw492_32\lib

[Unimportant]

9 minutes ago, Shammikit said:

is this the path that i should refer to ? C:\Qt\Qt5.5.1\5.5\mingw492_32\lib

Don't know where to find that file - I don't run windows. Simply search your harddisk for it. If you don't have it already then it probably comes as part of some SDK you need to install.