MemorySniffer V1.0小程序

内存监控小软件

于 2007-08-31 19:19:00 发布 · 82 阅读

本文介绍了一个简单的内存监控软件实现过程，通过绘制饼图直观展示内存使用情况，并在界面上显示总内存及可用内存的具体数值。

今天仿书上做的一个监控内存的小软件:界面如下:

主要代码:

void CYx_MemoryView::OnDraw(CDC* pDC)
{
CYx_MemoryDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
CString str;
double dFree =0 , dUse = 0;
int x = 0,y = 0 ;
CRect rect;
CPen Pen;
CBrush Brush;
Brush.CreateSolidBrush(RGB(255,0,0)); //画内部
Pen.CreatePen(PS_SOLID,100,RGB(255,0,0));//画边框
pDC->SelectObject(&Pen);
pDC->SelectObject(&Brush);

::GlobalMemoryStatus(&myMemory);
totalMemory = myMemory.dwTotalPhys;
freeMemory = myMemory.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 * freeMemory/totalMemory);
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);

GetMemoryString(&str,totalMemory,"totalmemory");

pDC->TextOut(300,300,str);
GetMemoryString(&str,freeMemory,"freememory");
pDC->TextOut(100,200,str);
pDC->TextOut(800,800,"Memory Sniffer V1.0");
pDC->TextOut(750,-800,"author:duanyx");
pDC->TextOut(750,-900,"Emial:duanyx@szkingdom.com");

}
void CYx_MemoryView::GetMemoryString(CString* str,double dMyMemory,PCSTR strTail)
{
char cTail='K';
dMyMemory /= 1024;
if( dMyMemory > 1024 )
{
dMyMemory /= 1024;
cTail = 'M';
}
str->Format("%.2f%c%s%s",dMyMemory,cTail,"b ",strTail);
}