void CChildView::OnPaint()
{
        CPaintDC dc(this); // device context for painting        
        CRect framesize;   // 창크기 저장 객체 생성
        GetClientRect(&framesize);  // 창의 사이즈를 구한다.
        int fsvm_h, fsvm_v; // 창의 중심값을 저장할 변수
        fsvm_h=(framesize.right/2)/10*10;
        fsvm_v=(framesize.bottom/2)/10*10;

        CString str;
        float radv=0.00;  //반지름
        int leftup, value_r=1; // 정수화 된 반지름

//중심이 화면에 중심이고, 반지름이 100인 원 시작//
        CPen pen1(PS_SOLID, 2, RGB(255, 0, 0));
    dc.SelectObject(&pen1);
        dc.Ellipse(fsvm_h-100, fsvm_v-100, fsvm_h+100, fsvm_v+100);
//중심이 화면에 중심이고, 반지름이 100인 원 끝//

        radv = 1.0/(1+0.5);
        leftup=radv*100;
    CPen pen4(PS_SOLID, 2, RGB(255, 0, 0));
    dc.SelectObject(&pen4);
    dc.Ellipse(fsvm_h-leftup*2+100, fsvm_v-leftup, fsvm_h+100, fsvm_v+leftup);

        while(value_r<3){
        radv = 1.0/(1+value_r);
//                str.Format(" = %f,  = %d", radv, leftup);
//                MessageBox((LPCTSTR)str, NULL, MB_OK);
        leftup=radv*100;
    CPen pen5(PS_SOLID, 2, RGB(255, 0, 0));
    dc.SelectObject(&pen5);
    dc.Ellipse(fsvm_h-leftup*2+100, fsvm_v-leftup, fsvm_h+100, fsvm_v+leftup);
        
        value_r++;
}
//////////////////////////////////////////////////////////원 그리는 부분 끝////////////////////

        int Vgrid_v=10;
        int Vgrid=10;
//////////////////////////////////////////가로줄 그리기//////////////////////////////////////
        while(Vgrid_v<framesize.bottom)
        {
                CPen pen2(PS_SOLID, 1, RGB(192, 192, 192));
                dc.SelectObject(&pen2);
                dc.MoveTo(0, Vgrid_v);
                dc.LineTo(framesize.right, Vgrid_v);
                Vgrid_v=Vgrid_v+10;
        }
//////////////////////////////////////////세로줄 그리기//////////////////////////////////////
        while(Vgrid<framesize.right)
        {
                CPen pen(PS_SOLID, 1, RGB(192, 192, 192));
                dc.SelectObject(&pen);
                dc.MoveTo(Vgrid, 0);
                dc.LineTo(Vgrid, framesize.bottom);
                Vgrid=Vgrid+10;
//                str.Format("framesize.right = %d, Vgrid = %d", framesize.right, Vgrid);
//                MessageBox((LPCTSTR)str, NULL, MB_OK);
        }
//////////////////////////////////////////수직선 그리기//////////////////////////////////////
        
                CPen pen_v(PS_SOLID, 1, RGB(0, 0, 0));
                dc.SelectObject(&pen_v);
                dc.MoveTo(fsvm_h, 0);
                dc.LineTo(fsvm_h, framesize.bottom);
        
                CPen pen_h(PS_SOLID, 1, RGB(0, 0, 0));
                dc.SelectObject(&pen_h);
                dc.MoveTo(0, fsvm_v);
                dc.LineTo(framesize.right, fsvm_v);
        
}