How do we get CPU Usage?

[Deniz]

In XP you get the Task Manager and in the Performance tab it has CPU usage.

Does anyone know how to get the CPU usage percentage using VC++?

[Andreas Masur]

CPU usage in terms of time or percentage? For the former one you can use GetProcessTimes() (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/getprocesstimes.asp)...for the latter one NtQuerySystemInformation (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/base/ntquerysysteminformation.asp)....

Note, that 'NtQuerySystemInformation()' does only work on systems NT or higher...

[Deniz]

Thank you Andreas.

[Andreas Masur]

You are welcome...