VC++|VC++ MFC 画图详解（附源码） VC++MFC画图详解（附源码）

（1）新建 MFC aplication exe 文件：
【VC++|VC++ MFC 画图详解（附源码）】painttool
（2）在CPaintoo1View类的 OnDraw方法添加如下代码：
画图程序：
Code:

void CPaintoo1View::OnDraw(CDC* pDC)
{
CPaintoo1Doc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
CPen pen_zuobixi,pen_sinx;
pen_zuobixi.CreatePen(PS_SOLID,4,RGB(0,0,0));
pen_sinx.CreatePen(PS_SOLID,2,RGB(0,0,255));
pDC->SelectObject(&pen_zuobixi);
//指定原点
pDC->SetViewportOrg(200,255);
pDC->SetTextColor(RGB(255,0,0));
CString sPIText[] = {"-1","0"," 1" , "2","3","4","5","6","7","8","9","10","11"};
int n= -1;
int nTemp = 0;
while(nTemp<=660)
{pDC->LineTo(60*n,0);
pDC->LineTo(60*n,-5);
pDC->MoveTo(60*n,0);
pDC->TextOut(60*n-sPIText[n+1].GetLength()*3,16,sPIText[n+1]);
n++;
nTemp+=60;
}
pDC->MoveTo(0,0);
CString strTemp;
for(n=-4,nTemp=0; nTemp<=180; n++,nTemp+=60){
pDC->LineTo(0,60*n);
pDC->LineTo(5,60*n);
pDC->MoveTo(0,60*n);
strTemp.Format("%d",-n);
pDC->TextOut(10,60*n,strTemp);
}
double y,radian;
pDC->SelectObject(&pen_sinx);
for(int x=-60; x<600; x++)
{
radian = x/((double)6*2)*Pi;
y=(radian*(-0.109417*radian+1.936310)+2.399982);
pDC->MoveTo((int)x,(int)y);
pDC->LineTo((int)x,(int)y);
}
pen_sinx.DeleteObject();
}

运行结果为：

VC++|VC++ MFC 画图详解（附源码）