MFC残缺棋局问题，求大虾帮忙解决

void C残缺棋局—界面Dlg::OnPaint()
{
    if (IsIconic())
    {
        CPaintDC dc(this); // 用于绘制的设备上下文

        SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

        // 使图标在工作区矩形中居中
        int cxIcon = GetSystemMetrics(SM_CXICON);
        int cyIcon = GetSystemMetrics(SM_CYICON);
        CRect rect;
        GetClientRect(&rect);
        int x = (rect.Width() - cxIcon + 1) / 2;
        int y = (rect.Height() - cyIcon + 1) / 2;

        // 绘制图标
        dc.DrawIcon(x, y, m_hIcon);
        //dc.DeleteDC();
    }
    else
    {
        CDialogEx::OnPaint();
    }
}

//当用户拖动最小化窗口时系统调用此函数取得光标
//显示。
HCURSOR C残缺棋局—界面Dlg::OnQueryDragIcon()
{
    return static_cast<HCURSOR>(m_hIcon);
}



int amount=0,Board[130][130];
void Cover(int tr,int tc,int dr,int dc,int size)
{
    int s,t;                 
    if (size<2)  return;
    amount=amount+1;
    t=amount;           // 所使用的三格板的数目
    s=size/2;          // 子问题棋盘大小

    if(dr<tr+s && dc<tc+s) //残缺方格位于左上棋盘
    {
      Cover(tr,tc,dr,dc,s);
      Board[tr + s - 1][tc + s] = t;     //覆盖1号三格板
      Board[tr + s][tc + s - 1] = t;
      Board[tr + s][tc + s] = t;
      Cover(tr, tc+s, tr+s-1, tc+s, s);   // 覆盖其余部分
      Cover(tr+s, tc, tr+s, tc+s-1, s);
      Cover(tr+s, tc+s, tr+s, tc+s, s);      
    }
    else if(dr<tr+s&&dc>=tc+s)       //残缺方格位于右上象限
    {
        Cover(tr,tc+s,dr,dc,s);
        Board[tr + s - 1][tc + s - 1] = t;       // 覆盖2号三格板
        Board[tr + s][tc + s - 1] = t;
        Board[tr + s][tc + s] = t;     
        Cover(tr, tc, tr+s-1, tc+s-1, s);     //覆盖其余部分
        Cover(tr+s, tc, tr+s, tc+s-1, s);
        Cover(tr+s, tc+s, tr+s, tc+s, s);
    }
    else if (dr >= tr + s && dc < tc + s)   //残缺方格位于覆盖左下象限      
    {
        Cover(tr+s,tc,dr,dc,s);
        Board[tr + s - 1][tc + s - 1] = t;   // 覆盖3号三格板
        Board[tr + s - 1][tc + s] = t;
        Board[tr + s][tc + s] = t;
        Cover(tr, tc, tr+s-1, tc+s-1, s);   //覆盖其余部分
        Cover(tr, tc+s, tr+s-1, tc+s, s);   
        Cover(tr+s, tc+s, tr+s, tc+s, s);
    }
    else if (dr >= tr + s && dc >= tc + s)   // 残缺方格位于右下象限
    {
        Cover(tr+s,tc+s,dr,dc,s);
        Board[tr + s - 1][tc + s - 1] = t;    // 覆盖4号三格板
        Board[tr + s - 1][tc + s] = t;
        Board[tr + s][tc + s - 1] = t;
        Cover(tr, tc, tr+s-1, tc+s-1, s);    //覆盖其余部分
        Cover(tr, tc+s, tr+s-1, tc+s, s);
        Cover(tr+s, tc, tr+s, tc+s-1, s);
    }
}
static int size=1;
bool flag=false;

void C残缺棋局—界面Dlg::OnSelendokCombo1()
{
    flag=true;
    //刷新窗口重绘
    RedrawWindow();
    // TODO: 在此添加控件通知处理程序代码
    CClientDC dc(this);
    CPen bi,*jbi;
    bi.CreatePen(PS_SOLID,2,RGB(0,0,0)); //创建黑色、画笔
    jbi=dc.SelectObject(&bi); //选择画笔
    size=1;
    int nIndex = m_cb.GetCurSel();  //获取下拉框数据
    for(int x=0;x<nIndex+2;x++)
    {
        size=size*2;
    }
    int whight=640/size;
    for(int i=0;i<size+1;i++)  
    {
      dc.MoveTo(10,10+i*whight);//画水平线
      dc.LineTo(10+size*whight,10+i*whight);
      dc.MoveTo(10+i*whight,10);//画垂直线
      dc.LineTo(10+i*whight,10+size*whight);
    }
    bi.DeleteObject();
    jbi->DeleteObject();
}


void C残缺棋局—界面Dlg::OnLButtonDown(UINT nFlags, CPoint point)
{
    // TODO: 在此添加消息处理程序代码和/或调用默认值
    if(flag){
    CClientDC dc(this); // 用于绘制的设备上下文
    int time;
    int whight=640/size;
    time=1600/size;
   
    GetCursorPos(&point);
    ScreenToClient(&point);
    if(point.x>650||point.y>650)
        MessageBox(_T("不在棋盘范围内！"),_T("无效的点击"),MB_ICONEXCLAMATION|MB_OK);
    else{
        Cover(0, 0, point.y/whight, point.x/whight, size);

        CBrush brush[7];
        //CBrush *pBrush=brush;
        for(int k=0;k<7;k++)
        {
            brush[k].CreateSolidBrush(RGB((k/4)*255,((k/2)%2)*255,(k%2)*255));
        }
        //pBrush=dc.SelectObject(&brush[7]); //载入笔刷
        //dc.SelectObject(&pBrush);
        CRect fillrect;
        for(int k=1;k<((size*size)/3)+1;k++)
        {
            for(int i=0;i<size;i++)
            {
                for(int j=0;j<size;j++)
                {
                    if(Board[i][j]==k)
                    {
                        fillrect.top=10+whight*i;
                        fillrect.bottom=10+whight*(i+1);
                        fillrect.left=10+whight*j;
                        fillrect.right=10+whight*(j+1);
                        dc.FillRect(&fillrect,&brush[k%7]);
                        dc.FrameRect(&fillrect,&brush[0]);
                    }
                }
            }
            Sleep(time);
        }

        for(int i=0;i<7;i++)   brush[i].DeleteObject();
        //pBrush->DeleteObject();

        flag=false;
        }
    }
    CDialogEx::OnLButtonDown(nFlags, point);
}