asked on

How could I know the CPU usage ?

I'd like to know my CPU usage (charge) in real time, like the little app "sysmon" which comes with windows 95.

The problem is that I haven't found what kind of win32api I have to use...

Anybody could help me ?

ASKER CERTIFIED SOLUTION

richhxb

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richhxb

Sorry, I found the original code which I gave you could not
work. The following code is now correct:

//////////////////
// Begin of code.

// Open and read the StartSrv:KERNEL value

HKEY hWin95StartSrv;
HKEY hWin95Key;
HKEY hWin95StartStat;
DWORD ValType;
DWORD cpuPerCent;
DWORD cbData = sizeof(cpuPerCent);
BYTE ValBuffer[512];

RegOpenKeyEx(HKEY_DYN_DATA,
"PerfStats\\StartSrv",
0,
KEY_READ,
&hWin95StartSrv
);

RegQueryValueEx(hWin95StartSrv,
"KERNEL\\CPUUsage",
NULL,
&ValType,
(LPBYTE)&ValBuffer,
&cbData);

// Open and read the StartStat:KERNEL\CPUUsage value
// This mysteriously enables the StatData:KERNEL\CPUUsage
// value.

RegOpenKeyEx(HKEY_DYN_DATA,
"PerfStats\\StartStat",
0,
KEY_READ,
&hWin95StartStat
);

RegQueryValueEx(hWin95StartStat,
"KERNEL\\CPUUsage",
NULL,
&ValType,
(LPBYTE)&ValBuffer,
&cbData);

// Open and read the StatData:KERNEL\CPUUsage key to
// reset the CPU meter

RegOpenKeyEx(HKEY_DYN_DATA,
"PerfStats\\StatData",
0,
KEY_READ,
&hWin95Key
);

RegQueryValueEx(hWin95Key,
"KERNEL\\CPUUsage",
NULL,
&ValType,
(LPBYTE)&cpuPerCent,
&cbData);

// cpuPerCent now contains an integer value between 0 and
// 100

/////////////////
// End of code.

Administrator

ASKER

This is exactly what I wanted !!! Thanx a lot ;-)