www.pudn.com > lookmemory.rar > GetMemoryView.cpp

// GetMemoryView.cpp : implementation of the CGetMemoryView class 
// 
 
#include "stdafx.h" 
#include "GetMemory.h" 
 
#include "GetMemoryDoc.h" 
#include "GetMemoryView.h" 
#include "math.h" 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
#define PI 3.1415 
#define RADIUS 900 
///////////////////////////////////////////////////////////////////////////// 
// CGetMemoryView 
 
IMPLEMENT_DYNCREATE(CGetMemoryView, CView) 
 
BEGIN_MESSAGE_MAP(CGetMemoryView, CView) 
	//{{AFX_MSG_MAP(CGetMemoryView) 
		// NOTE - the ClassWizard will add and remove mapping macros here. 
		//    DO NOT EDIT what you see in these blocks of generated code! 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CGetMemoryView construction/destruction 
 
CGetMemoryView::CGetMemoryView() 
{ 
	// TODO: add construction code here 
 
} 
 
CGetMemoryView::~CGetMemoryView() 
{ 
} 
 
BOOL CGetMemoryView::PreCreateWindow(CREATESTRUCT& cs) 
{ 
	// TODO: Modify the Window class or styles here by modifying 
	//  the CREATESTRUCT cs 
 
	return CView::PreCreateWindow(cs); 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// CGetMemoryView drawing 
 
void CGetMemoryView::OnDraw(CDC* pDC) 
{ 
	CGetMemoryDoc* pDoc = GetDocument(); 
	ASSERT_VALID(pDoc); 
	CString str; 
	int x,y; 
	double dFree,dUse;  
	CRect rect; 
	CPen Pen; 
	CBrush Brush; 
	Brush.CreateSolidBrush(RGB(255,0,0)); 
	Pen.CreatePen(PS_SOLID, 100,RGB(255,0,0)); 
    pDC->SelectObject(&Pen); 
	pDC->SelectObject(&Brush); 
	::GlobalMemoryStatus(&mem); 
	MemTotal=mem.dwTotalPhys; 
	Memfree=mem.dwAvailPhys; 
    GetClientRect( &rect ); 
    pDC->SetMapMode( MM_ISOTROPIC ); 
    pDC->SetWindowExt( RADIUS+100, RADIUS+100 ); 
    pDC->SetViewportExt( rect.right/2, -rect.bottom/2 ); 
    pDC->SetViewportOrg( rect.right/2, rect.bottom/2 ); 
	dFree = (double) (PI*2 * Memfree/MemTotal); 
    dUse  = (double) PI*2 - dFree; 
 
   
    x = -(int) (sin( dUse ) * RADIUS); 
    y =  (int) (cos( dUse ) * RADIUS); 
    pDC->Pie( -RADIUS, RADIUS, RADIUS, -RADIUS, 0, RADIUS, x, y ); 
	GetMemoryStr(&str,MemTotal,"×ܹ²"); 
 
	pDC->TextOut(300,300,str); 
 
	GetMemoryStr(&str,Memfree,"Ê£Óà"); 
	pDC->TextOut(100,200,str); 
 
} 
 
void CGetMemoryView::GetMemoryStr(CString *str,double m_mem,PCSTR strTail) 
{ 
 
    char    m_ch = 'K';                  
 
    m_mem /= 1024; 
    if (m_mem > 1024)                        
    {                                   
        m_mem  /= 1024;                   
        m_ch  = 'M';                    
    } 
    str->Format( "%.2f %c%s%s", m_mem, m_ch, "b ", strTail ); 
} 
 
 
#ifdef _DEBUG 
void CGetMemoryView::AssertValid() const 
{ 
	CView::AssertValid(); 
} 
 
void CGetMemoryView::Dump(CDumpContext& dc) const 
{ 
	CView::Dump(dc); 
} 
 
CGetMemoryDoc* CGetMemoryView::GetDocument() // non-debug version is inline 
{ 
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CGetMemoryDoc))); 
	return (CGetMemoryDoc*)m_pDocument; 
} 
#endif //_DEBUG 
 
///////////////////////////////////////////////////////////////////////////// 
// CGetMemoryView message handlers