给圆环和扇形填充颜色 vb.net,给个例子
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void CDDlg::DrawC(CPaintDC *dc)

{

CRect rect;

GetClientRect(&rect);

int x0=rect.Width()/2;

int y0=rect.Height()+100;

int C1=RGB(255,0,0);

int C2=RGB(0,0,255);

int x1,y1,x2,y2;

double th,r1=200.0,r2=400.0,c=0;

CPen *op,p;

p.CreatePen(0,1,RGB(0,0,0));

op=dc->SelectObject(&p);

for(th=3.14/4;thSelectObject(&p);

dc->MoveTo(x1,y1);

dc->LineTo(x2,y2);

}

dc->SelectObject(op);

p.DeleteObject();

}

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