我要崩溃了怎么都找不出来为什么

我做的是推箱子程序，逻辑是没问题的，但是现在画图出问题了。

先看图吧

这说要推时的样子：

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这是推了后样子，空位直接被覆盖掉了，问题就是这里，怎么都找不到原因。

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但是推箱子的英雄却是没问题的啊蓝色圆圈：

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下面是画图的代码：

程序代码：

        case WM_PAINT:
        {
            HDC hdc;
            PAINTSTRUCT ps;
            hdc = BeginPaint(hwnd, &ps);

            mg.SetGDC(hdc);

            mg.DrawMap(txz.GetZAV());
            mg.DrawMB(txz.GetMBV());
            mg.DrawXZ(txz.Getxzv());
            mg.DrawHR(txz.GetHP());

            EndPaint(hwnd,&ps);
        }

void CXZMG:: DrawMap(vector<POINT>* _za) //绘制地图迷宫
{
    if (m_hdc != NULL)
    {
        HBRUSH  brush1 = CreateSolidBrush(0x00000000), oldbrs;    //黑色画刷
        oldbrs = (HBRUSH)SelectObject(m_hdc, brush1);            //换画刷
        Rectangle(m_hdc, SX, SY, SX + m_W*(JS + JG) - JG, SY + m_H*(JS + JG) - JG);//画黑色背景

        HBRUSH  brush2 = CreateSolidBrush(0x000000FF);  //换红色画刷
        SelectObject(m_hdc, brush2);

        vector<POINT>::iterator b = _za->begin(), e = _za->end();
        for (; b != e; ++b)
        {
            int  l = SX + (*b).x * (JS + JG), t = SY + (*b).y * (JS + JG);
            int  r = l + JS, b = t + JS;

            Rectangle(m_hdc, l, t, r, b); //根据每个障碍障碍物的坐标画障碍物
        }

        SelectObject(m_hdc, oldbrs);//恢复原来的刷子

        DeleteObject(brush1);
        DeleteObject(brush2);
    }
}

void CXZMG:: DrawMB(vector<POINT>* mbv)
{
    if (m_hdc != NULL)
    {
        HBRUSH  brush = CreateSolidBrush(0x00FFFFFF),oldbrs;
        HPEN    pen   = CreatePen(PS_SOLID,2,0x0000FF00), oldpen;

        oldbrs = (HBRUSH)SelectObject(m_hdc, brush);//换白色刷子刷白色空心
        oldpen = (HPEN)SelectObject(m_hdc, pen);    //换绿色画笔画边框

        vector<POINT>::iterator b = mbv->begin(), e = mbv->end();
        for (; b != e; ++b)
        {
            int  l = SX + (*b).x * (JS + JG), t = SY + (*b).y * (JS + JG);
            int  r = l + JS, d = t + JS;

            Rectangle(m_hdc, l, t, r, d);//画空位
        }

        SelectObject(m_hdc, oldbrs);//恢复
        SelectObject(m_hdc, oldpen);//恢复
        DeleteObject(brush);
        DeleteObject(pen);
    }
}

void CXZMG:: DrawXZ(vector<POINT>* _xz)//绘制所有箱子传入箱子的坐标点表
{
    if (m_hdc != NULL)
    {
        HBRUSH  brush = CreateHatchBrush(HS_DIAGCROSS,0x000000ff),oldbrs;
        HPEN    pen   = CreatePen(PS_SOLID,1, 0x00ffffff),oldpen;

        oldbrs = (HBRUSH)SelectObject(m_hdc, brush);    //换网格刷子
        oldpen = (HPEN)SelectObject(m_hdc, pen);        //白色边框

        vector<POINT>::iterator b = _xz->begin(), e = _xz->end();
        for (; b != e; ++b)
        {
            int  l = SX + (*b).x * (JS + JG), t = SY + (*b).y * (JS + JG);
            int  r = l + JS, d = t + JS;

            Rectangle(m_hdc,l+3, t+3, r-3, d-3);
        }
        SelectObject(m_hdc, oldbrs);//恢复
        SelectObject(m_hdc, oldpen);//恢复
        DeleteObject(pen);
        DeleteObject(brush);
    }
}

void CXZMG:: DrawHR(POINT hp)    //绘制英雄传入英雄的坐标
{
    if (m_hdc != NULL)
    {
        HBRUSH  brush = CreateSolidBrush(0x00FF0000),oldbrs;
        HPEN    pen   = CreatePen(PS_SOLID,1, 0x00FF0000),oldpen;

        oldbrs = (HBRUSH)SelectObject(m_hdc, brush); //蓝色画刷
        oldpen = (HPEN)SelectObject(m_hdc, pen);     //蓝色边框

        Ellipse(m_hdc, SX + hp.x * (JS+JG)+JG,
                       SY + hp.y * (JS+JG)+JG,
                       SX + hp.x * (JS+JG)+JS -JG-1,
                       SY + hp.y * (JS+JG)+JS -JG-1);

        SelectObject(m_hdc, oldbrs);//恢复
        SelectObject(m_hdc, oldpen);//恢复
        DeleteObject(pen);
        DeleteObject(brush);
    }

[ 本帖最后由死了都要C 于 2012-2-26 17:44 编辑 ]

我要崩溃了 怎么都找不出来为什么