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Title: Get Information like No. of active threads, CPU Usage%, etc from the registry
Question: How do I get information such as Cpu usage%, No: of active threads etc from the registry.
Answer:
In the registry there is a section call HKEY_DYN_DATA. A lot of information about system is stored in this section under the PerfStats Key.
To get information such as cpu usage etc. you need to do three things.
The first step is to start the selected counter in the registry. This is done by reading the value of coressponding registry key.
For example
if we want to get CPU usage% then we have to read the value of the key 'PerfStats\StartStat\KERNEL\CPUusage' present in HKEY_DYN_DATA section of registry. this step starts the counter.
The next step is to read the value of the key 'PerfStats\StatData\KERNEL\CPUusage'. This value gives the percentage of CpU used at present. If we put this code in the On timer event of a timer we can get the amount of cpu used to see dynamic changes.
The final step is to stop the counter. To do this we have to read the registry key 'PerfStats\StopStat\KERNEL\CPUusage'.This stops the counter.
There are many other counters other than the CPU usage counter. You can see the list of counters by opening the PerfStats\StatData key using the Registry Editor.
I have created a component that gets the value of all the counters present in the HKEY_DYN_DATA section of the registry.
Here is the code.
unit SystemInfo;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
Dialogs,extctrls;
type TDialupAdapterInfo = record //Information of Dialup adapter
alignment:dword;
buffer:dword;
bytesrecieved:dword;
bytesXmit:dword;
ConnectSpeed:dword;
CRC:dword;
framesrecieved:dword;
FramesXmit:dword;
Framing:dword;
runts:dword;
Overrun:dword;
timeout:dword;
totalbytesrecieved:dword;
totalbytesXmit:dword;
end;
type TKernelInfo = record
CpuUsagePcnt:dword;
Numthreads:dword;
NumVMS:dword;
end;
type TVCACHEInfo = record
ccurpages:dword;
cMacPages:dword;
cminpages:dword;
FailedRecycles:dword;
Hits:dword;
LRUBuffers:dword;
LRURecycles:dword;
Misses:dword;
RandomRecycles:dword;
end;
type TFATInfo = record
BreadsSec:dword;
BwritesSec:dword;
Dirtydata:dword;
ReadsSec:dword;
WritesSec:dword;
end;
type TVMMInfo = record
CDiscards:dword;
CInstancefaults:dword;
CPageFaults:dword;
cPageIns:dword;
cPageOuts:dword;
cpgCommit:dword;
cpgDiskCache:dword;
cpgDiskCacheMac:dword;
cpgDiskCacheMid:dword;
cpgDiskCacheMin:dword;
cpgfree:dword;
cpglocked:dword;
cpglockedNoncache:dword;
cpgother:dword;
cpgsharedpages:dword;
cpgswap:dword;
cpgswapfile:dword;
cpgswapfiledefective:dword;
cpgswapfileinuse:dword;
end;
type
TSysInfo = class(TComponent)
private
fDialupAdapterInfo:TDialupAdapterInfo;
fKernelInfo:TKernelInfo;
fVCACHEInfo:TVCACHEInfo;
fFATInfo:TFATInfo;
fVMMInfo:TVMMInfo;
ftimer:TTimer;
fupdateinterval:integer;
tmp:dword;
vsize:dword;
pkey:hkey;
regtype:pdword;
fstopped:boolean;
procedure fupdatinginfo(sender:tobject);
procedure fsetupdateinterval(aupdateinterval:integer);
protected
fsysInfoChanged:TNotifyEvent;
public
constructor Create(Aowner:Tcomponent);override;
destructor Destroy;override;
property DialupAdapterInfo: TDialupAdapterInfo read fDialupAdapterInfo;
property KernelInfo: TKernelInfo read fKernelInfo;
property VCACHEInfo: TVCACHEInfo read fVCACHEInfo;
property FATInfo: TFATInfo read fFATInfo;
property VMMInfo: TVMMInfo read fVMMInfo;
procedure StartRecievingInfo;
procedure StopRecievingInfo;
published
property SysInfoChanged:TNotifyEvent read fsysInfoChanged write
fsysInfoChanged;//this event is called after a specific interval.
property UpdateInterval:integer read fupdateInterval write
fsetupdateinterval default 5000;
end;
procedure Register;
implementation
constructor TSysInfo.Create(Aowner:Tcomponent);
begin
inherited;
ftimer:=ttimer.Create(self);
ftimer.enabled:=false;
ftimer.OnTimer:=fupdatinginfo;
vsize:=4;
fstopped:=true;
end;
procedure TSysInfo.startrecievingInfo;
var
res:integer;
begin
res:=RegOpenKeyEx(HKEY_DYN_DATA,'PerfStats\StartStat',0,KEY_ALL_ACCESS,pkey);
if res0 then
raise exception.Create('Could not open registry key');
fstopped:=false;
// For Dial Up Adapter
RegQueryValueEx(pkey,'Dial-Up Adapter\Alignment',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Buffer',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Framing',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Overrun ',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Timeout',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\CRC',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Runts',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\FramesXmit',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\FramesRecvd',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\BytesXmit',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\BytesRecvd',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\TotalBytesXmit',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\TotalBytesRecvd',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\ConnectSpeed',nil,regtype,@tmp,@vsize);
// For VCACHE
RegQueryValueEx(pkey,'VCACHE\LRUBuffers',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\FailedRecycles',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\RandomRecycles',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\LRURecycles',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\Misses',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\Hits',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\cMacPages',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\cMinPages',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\cCurPages',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\BytesXmit',nil,regtype,@tmp,@vsize);
//For VFAT
RegQueryValueEx(pkey,'VFAT\DirtyData',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VFAT\BReadsSec',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VFAT\BWritesSec',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VFAT\ReadsSec',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VFAT\WritesSec',nil,regtype,@tmp,@vsize);
//For VMM
RegQueryValueEx(pkey,'VMM\cpgLockedNoncache',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgCommit',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSharedPages',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgDiskcacheMid',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgDiskcacheMac',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgDiskcacheMin',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgDiskcache',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSwapfileDefective',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSwapfileInUse',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSwapfile',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cDiscards',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cPageOuts',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cPageIns',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cInstanceFaults',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cPageFaults',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgOther',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSwap',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgLocked',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgFree',nil,regtype,@tmp,@vsize);
//For KERNEL
RegQueryValueEx(pkey,'KERNEL\CPUUsage',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'KERNEL\VMs',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'KERNEL\Threads',nil,regtype,@tmp,@vsize);
RegCloseKey(pkey);
ftimer.enabled:=true;
end;
procedure tsysinfo.fupdatinginfo(sender:tobject);
var
res:integer;
begin
res:=RegOpenKeyEx(HKEY_DYN_DATA,'PerfStats\StatData',0,KEY_ALL_ACCESS,pkey);
if res0 then
raise exception.Create('Could not open registry key');
//For Dial Up Adapter
RegQueryValueEx(pkey,'Dial-Up Adapter\Alignment',nil,regtype,@fDialupAdapterInfo.alignment,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Buffer',nil,regtype,@fDialupAdapterInfo.buffer,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Framing',nil,regtype,@fDialupAdapterInfo.framing,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Overrun ',nil,regtype,@fDialupAdapterInfo.overrun,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Timeout',nil,regtype,@fDialupAdapterInfo.timeout,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\CRC',nil,regtype,@fDialupAdapterInfo.crc,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Runts',nil,regtype,@fDialupAdapterInfo.runts,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\FramesXmit',nil,regtype,@fDialupAdapterInfo.framesxmit,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\FramesRecvd',nil,regtype,@fDialupAdapterInfo.framesrecieved,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\BytesXmit',nil,regtype,@fDialupAdapterInfo.bytesxmit,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\BytesRecvd',nil,regtype,@fDialupAdapterInfo.bytesrecieved,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\TotalBytesXmit',nil,regtype,@fDialupAdapterInfo.totalbytesxmit,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\TotalBytesRecvd',nil,regtype,@fDialupAdapterInfo.totalbytesrecieved,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\ConnectSpeed',nil,regtype,@fDialupAdapterInfo.connectspeed,@vsize);
// For VCACHE
RegQueryValueEx(pkey,'VCACHE\LRUBuffers',nil,regtype,@fVCACHEInfo.lrubuffers,@vsize);
RegQueryValueEx(pkey,'VCACHE\FailedRecycles',nil,regtype,@fVCACHEInfo.failedrecycles,@vsize);
RegQueryValueEx(pkey,'VCACHE\RandomRecycles',nil,regtype,@fVCACHEInfo.randomrecycles,@vsize);
RegQueryValueEx(pkey,'VCACHE\LRURecycles',nil,regtype,@fVCACHEInfo.lrurecycles,@vsize);
RegQueryValueEx(pkey,'VCACHE\Misses',nil,regtype,@fVCACHEInfo.misses,@vsize);
RegQueryValueEx(pkey,'VCACHE\Hits',nil,regtype,@fVCACHEInfo.hits,@vsize);
RegQueryValueEx(pkey,'VCACHE\cMacPages',nil,regtype,@fVCACHEInfo.cmacpages,@vsize);
RegQueryValueEx(pkey,'VCACHE\cMinPages',nil,regtype,@fVCACHEInfo.cminpages,@vsize);
RegQueryValueEx(pkey,'VCACHE\cCurPages',nil,regtype,@fVCACHEInfo.ccurpages,@vsize);
//For VFAT
RegQueryValueEx(pkey,'VFAT\DirtyData',nil,regtype,@ffatinfo.dirtydata,@vsize);
RegQueryValueEx(pkey,'VFAT\BReadsSec',nil,regtype,@ffatinfo.breadssec,@vsize);
RegQueryValueEx(pkey,'VFAT\BWritesSec',nil,regtype,@ffatinfo.bwritessec,@vsize);
RegQueryValueEx(pkey,'VFAT\ReadsSec',nil,regtype,@ffatinfo.readssec,@vsize);
RegQueryValueEx(pkey,'VFAT\WritesSec',nil,regtype,@ffatinfo.writessec,@vsize);
//For VMM
RegQueryValueEx(pkey,'VMM\cpgLockedNoncache',nil,regtype,@fvmminfo.cpglockednoncache,@vsize);
RegQueryValueEx(pkey,'VMM\cpgCommit',nil,regtype,@fvmminfo.cpgcommit,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSharedPages',nil,regtype,@fvmminfo.cpgsharedpages,@vsize);
RegQueryValueEx(pkey,'VMM\cpgDiskcacheMid',nil,regtype,@fvmminfo.cpgdiskcacheMid,@vsize);
RegQueryValueEx(pkey,'VMM\cpgDiskcacheMac',nil,regtype,@fvmminfo.cpgdiskcacheMac,@vsize);
RegQueryValueEx(pkey,'VMM\cpgDiskcacheMin',nil,regtype,@fvmminfo.cpgdiskcacheMin,@vsize);
RegQueryValueEx(pkey,'VMM\cpgDiskcache',nil,regtype,@fvmminfo.cpgdiskcache,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSwapfileDefective',nil,regtype,@fvmminfo.cpgswapfiledefective,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSwapfileInUse',nil,regtype,@fvmminfo.cpgswapfileinuse,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSwapfile',nil,regtype,@fvmminfo.cpgswapfile,@vsize);
RegQueryValueEx(pkey,'VMM\cDiscards',nil,regtype,@fvmminfo.cdiscards,@vsize);
RegQueryValueEx(pkey,'VMM\cPageOuts',nil,regtype,@fvmminfo.cpageouts,@vsize);
RegQueryValueEx(pkey,'VMM\cPageIns',nil,regtype,@fvmminfo.cpageins,@vsize);
RegQueryValueEx(pkey,'VMM\cInstanceFaults',nil,regtype,@fvmminfo.cinstancefaults,@vsize);
RegQueryValueEx(pkey,'VMM\cPageFaults',nil,regtype,@fvmminfo.cpagefaults,@vsize);
RegQueryValueEx(pkey,'VMM\cpgOther',nil,regtype,@fvmminfo.cpgother,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSwap',nil,regtype,@fvmminfo.cpgswap,@vsize);
RegQueryValueEx(pkey,'VMM\cpgLocked',nil,regtype,@fvmminfo.cpglocked,@vsize);
RegQueryValueEx(pkey,'VMM\cpgFree',nil,regtype,@fvmminfo.cpgfree,@vsize);
//For KERNEL
RegQueryValueEx(pkey,'KERNEL\CPUUsage',nil,regtype,@fkernelinfo.cpuusagepcnt,@vsize);
RegQueryValueEx(pkey,'KERNEL\VMs',nil,regtype,@fkernelinfo.numvms,@vsize);
RegQueryValueEx(pkey,'KERNEL\Threads',nil,regtype,@fkernelinfo.numThreads,@vsize);
RegCloseKey(pkey);
if assigned(SysInfoChanged) then
SysInfoChanged(self);
end;
procedure TSysInfo.stoprecievingInfo;
var
res:integer;
begin
res:=RegOpenKeyEx(HKEY_DYN_DATA,'PerfStats\StopStat',0,KEY_ALL_ACCESS,pkey);
if not fstopped then
begin
if res0 then
raise exception.Create('Could not open registry key');
//For Dial Up Adapter
RegQueryValueEx(pkey,'Dial-Up Adapter\Alignment',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Buffer',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Framing',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Overrun ',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Timeout',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\CRC',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\Runts',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\FramesXmit',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\FramesRecvd',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\BytesXmit',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\BytesRecvd',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\TotalBytesXmit',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\TotalBytesRecvd',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\ConnectSpeed',nil,regtype,@tmp,@vsize);
// For VCACHE
RegQueryValueEx(pkey,'VCACHE\LRUBuffers',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\FailedRecycles',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\RandomRecycles',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\LRURecycles',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\Misses',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\Hits',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\cMacPages',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\cMinPages',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VCACHE\cCurPages',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'Dial-Up Adapter\BytesXmit',nil,regtype,@tmp,@vsize);
//For VFAT
RegQueryValueEx(pkey,'VFAT\DirtyData',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VFAT\BReadsSec',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VFAT\BWritesSec',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VFAT\ReadsSec',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VFAT\WritesSec',nil,regtype,@tmp,@vsize);
//For VMM
RegQueryValueEx(pkey,'VMM\cpgLockedNoncache',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgCommit',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSharedPages',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgDiskcacheMid',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgDiskcacheMac',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgDiskcacheMin',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgDiskcache',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSwapfileDefective',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSwapfileInUse',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSwapfile',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cDiscards',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cPageOuts',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cPageIns',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cInstanceFaults',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cPageFaults',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgOther',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgSwap',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgLocked',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'VMM\cpgFree',nil,regtype,@tmp,@vsize);
//For KERNEL
RegQueryValueEx(pkey,'KERNEL\CPUUsage',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'KERNEL\VMs',nil,regtype,@tmp,@vsize);
RegQueryValueEx(pkey,'KERNEL\Threads',nil,regtype,@tmp,@vsize);
RegCloseKey(pkey);
ftimer.enabled:=false;
fstopped:=true;
end;
end;
procedure tsysinfo.fsetupdateinterval(aupdateinterval:integer);
begin
if (ftimernil) and(aupdateinterval0) then
begin
ftimer.Interval:=aupdateinterval;
fupdateinterval:=aupdateinterval;
end;
if (ftimernil) and(aupdateinterval=0) then
begin
ftimer.Interval:=500;
fupdateinterval:=500;
end;
end;
destructor tsysinfo.Destroy;
begin
StopRecievingInfo;
ftimer.Destroy;
inherited;
end;
procedure Register;
begin
RegisterComponents('Samples', [TSysInfo]);
end;

Copy it into a .pas file and then install it.