#include?“stdafx.h“
#include?“CpuUsage.h“

CCpuUsage::CCpuUsage（）
{
	//
	m_hWnd?=?NULL;
	m_nRefreshInterval?=?1000;
	m_nTimerID?=?1000;
	m_nCpuUsage?=?0;

	//
	memset（&liOldIdleTime?????0?sizeof（LARGE_INTEGER））;
	memset（&liOldSystemTime???0?sizeof（LARGE_INTEGER））;?

	//???
	NtQuerySystemInformation?=?（PROCNTQSI）GetProcAddress（
		GetModuleHandle（/*（LPCWSTR）*/（LPCTSTR）_T（“ntdll“））??“NtQuerySystemInformation“）;??//20100821modify?to?mutilybutes
	
	if?（!NtQuerySystemInformation）
		return;

	//?get?number?of?processors?in?the?system
	status?=?NtQuerySystemInformation（SystemBasicInformation&SysbaseInfosizeof（SysbaseInfo）NULL）;
	if?（status?!=?NO_ERROR）
		return;

	//?create?control?for?timer
	m_hWnd?=?::CreateWindow（_T（“static“）?_T（““）?0?0?0?0?0?NULL?NULL?0?NULL）;
	::SetWindowLong（m_hWnd??GWL_USERDATA??（long）（this）?）;

	TIMERPROC?tp?=?（TIMERPROC）CalcCpuUsage;
	SetTimer（m_hWnd??m_nTimerID?m_nRefreshInterval?tp）;

}

CCpuUsage::~CCpuUsage（）
{
	KillTimer（m_hWnd??m_nTimerID）;
	DestroyWindow（m_hWnd）;
}

void?CCpuUsage::CalcCpuUsage（
									HWND?hwnd
									UINT?uMsg
									UINT_PTR?idEvent
									DWORD?dwTime
									）
{
	CCpuUsage*?pCpu?=?（CCpuUsage*）::GetWindowLong（hwnd??GWL_USERDATA）;

	if?（?pCpu?）
	{
		pCpu->OnTimer（）;
	}

}

int?CCpuUsage::OnTimer（）
{
	status?=?NtQuerySystemInformation（SystemTimeInformation&SysTimeInfosizeof（SysTimeInfo）0）;

	if?（status!=NO_ERROR）
		return?0;

	//?get?new?CPU‘s?idle?time
	status?=?NtQuerySystemInformation（SystemPerformanceInformation&SysPerfInfosizeof（SysPerfInfo）NULL）;
	if?（status?!=?NO_ERROR）
		return?0;

	//?if?it‘s?a?first?call?-?skip?it
	if?（liOldIdleTime.QuadPart?!=?0）
	{
		//?CurrentValue?=?NewValue?-?OldValue
		dbIdleTime?=?Li2Double（SysPerfInfo.liIdleTime）?-?Li2Double（liOldIdleTime）;
		dbSystemTime?=?Li2Double（SysTimeInfo.liKeSystemTime）?-?Li2Double（liOldSystemTime）;

		//?CurrentCpuIdle?=?IdleTime?/?SystemTime
		dbIdleTime?=?dbIdleTime?/?dbSystemTime;

		//?CurrentCpuUsage%?=?100?-?（CurrentCpuIdle?*?100）?/?NumberOfProcessors
		dbIdleTime?=?100.0?-?dbIdleTime?*?100.0?/?（double）SysbaseInfo.bKeNumberProcessors?+?0.5;

		m_nCpuUsage?=?（UINT）dbIdleTime;
	}

	//?store?new?CPU‘s?idle?and?system?time
	liOldIdleTime?=?SysPerfInfo.liIdleTime;
	liOldSystemTime?=?SysTimeInfo.liKeSystemTime;

	//?wait?one?second

	return?0;
}

int?CCpuUsage::GetCpuUsage（）
{
	return?m_nCpuUsage;
}

int?CCpuUsage::SetRefreshInterval（int?milli_sec）
{
	m_nRefreshInterval?=?milli_sec;

	if?（?m_hWnd?）
	{
		TIMERPROC?tp?=?（TIMERPROC）CalcCpuUsage;
		SetTimer（m_hWnd?m_nTimerID?m_nRefreshInterval?tp）;
	}

	return?0;

}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1464??2009-09-04?19:03??LocalProcessInfo2\LocalProcessInfo2\LocalInfo.cpp

?????文件????????294??2009-09-04?18:39??LocalProcessInfo2\LocalProcessInfo2\LocalInfo.h

?????文件??????59476??2009-09-05?15:18??LocalProcessInfo2\LocalProcessInfo2\LocalProcessInfo2.aps

?????文件???????2227??2009-08-31?15:20??LocalProcessInfo2\LocalProcessInfo2\LocalProcessInfo2.cpp

?????文件????????570??2009-08-31?15:20??LocalProcessInfo2\LocalProcessInfo2\LocalProcessInfo2.h

?????文件???????6095??2009-09-05?15:18??LocalProcessInfo2\LocalProcessInfo2\LocalProcessInfo2.rc

?????文件???????5919??2009-09-04?18:51??LocalProcessInfo2\LocalProcessInfo2\LocalProcessInfo2.vcproj

?????文件???????1409??2012-09-02?18:50??LocalProcessInfo2\LocalProcessInfo2\LocalProcessInfo2.vcproj.SH-123.wang.user

?????文件???????1427??2009-09-05?15:51??LocalProcessInfo2\LocalProcessInfo2\LocalProcessInfo2.vcproj.THINKIT-937A9F7.sun.user

?????文件???????5712??2009-09-05?15:41??LocalProcessInfo2\LocalProcessInfo2\LocalProcessInfo2Dlg.cpp

?????文件???????1087??2009-08-31?18:32??LocalProcessInfo2\LocalProcessInfo2\LocalProcessInfo2Dlg.h

?????文件???????7390??2004-07-07?02:23??LocalProcessInfo2\LocalProcessInfo2\perfmon.cpp

?????文件???????3365??2009-09-05?15:49??LocalProcessInfo2\LocalProcessInfo2\perfmon.h

?????文件???????4439??2009-08-31?15:20??LocalProcessInfo2\LocalProcessInfo2\ReadMe.txt

?????文件??????21630??2005-08-12?16:37??LocalProcessInfo2\LocalProcessInfo2\res\LocalProcessInfo2.ico

?????文件????????408??2009-08-31?15:20??LocalProcessInfo2\LocalProcessInfo2\res\LocalProcessInfo2.rc2

?????文件????????919??2009-08-31?16:26??LocalProcessInfo2\LocalProcessInfo2\resource.h

?????文件????????217??2009-08-31?15:20??LocalProcessInfo2\LocalProcessInfo2\stdafx.cpp

?????文件???????2864??2009-08-31?15:20??LocalProcessInfo2\LocalProcessInfo2\stdafx.h

?????文件????????916??2009-08-31?15:20??LocalProcessInfo2\LocalProcessInfo2.sln

?????文件??????15469??2010-11-23?10:14??ExeTopFive\ExeTopFive\CpuFive.cpp

?????文件???????1656??2010-09-06?10:35??ExeTopFive\ExeTopFive\CpuFive.h

?????文件???????1154??2010-09-06?10:28??ExeTopFive\ExeTopFive\ExeTopFive.cpp

?????文件???????4766??2012-09-02?18:51??ExeTopFive\ExeTopFive\ExeTopFive.vcproj

?????文件???????3956??2010-09-06?10:35??ExeTopFive\ExeTopFive\ExeTopFive.vcproj.7.10.old

?????文件???????1409??2012-09-02?18:53??ExeTopFive\ExeTopFive\ExeTopFive.vcproj.SH-123.wang.user

?????文件???????1009??2010-09-05?07:57??ExeTopFive\ExeTopFive\ReadMe.txt

?????文件????????214??2010-09-05?07:57??ExeTopFive\ExeTopFive\stdafx.cpp

?????文件????????195??2010-09-05?07:57??ExeTopFive\ExeTopFive\stdafx.h

?????文件????????890??2012-09-02?18:51??ExeTopFive\ExeTopFive.sln

............此處省略37個文件信息