MoveToEx(hdcEmf,0,0,NULL);

    LineTo(hdcEmf,STEP*xSize+1,0);

    MoveToEx(hdcEmf,0,0,NULL);

    LineTo(hdcEmf,0,STEP*ySize+1);

    MoveToEx(hdcEmf,STEP*xSize+1,0,NULL);

    LineTo(hdcEmf,STEP*xSize+1,STEP*ySize+1);

    MoveToEx(hdcEmf,0,STEP*ySize+1,NULL);

    LineTo(hdcEmf,STEP*xSize+1,STEP*ySize+1);   /*以上几句画出迷宫的外围*/

/*下面的二重循环根据Maze数组表示的迷宫中各块的连通情况，画出迷宫内部的围墙*/

    for(i=1;i<ySize+1;i++)             

        for(j=1;j<xSize+1;j++)

        {

            int t=abs(Maze[i][j]-Maze[i][j+1]);

            if(!(t<=1||(t-1000)==Maze[i][j]||t-1000==Maze[i][j+1]))

            {

                MoveToEx(hdcEmf,j*STEP,i*STEP-STEP,NULL);

                LineTo(hdcEmf,j*STEP,i*STEP);

                if (!VWall[j][i-1]) VWall[j][i-1]=1;

            }

            t=abs(Maze[i][j]-Maze[i+1][j]);

            if(!(t<=1||(t-1000)==Maze[i][j]||t-1000==Maze[i+1][j]))

            {

                MoveToEx(hdcEmf,j*STEP-STEP,i*STEP,NULL);

                LineTo(hdcEmf,j*STEP,i*STEP);

                if (!HWall[j-1][i]) HWall[j-1][i]=1;

            }

        }

    DeleteObject(SelectObject(hdcEmf,GetStockObject(BLACK_PEN))); 

    SelectObject(hdcEmf,GetStockObject(WHITE_PEN));

    MoveToEx(hdcEmf,STEP,0,NULL);

    LineTo(hdcEmf,2*STEP,0);

    MoveToEx(hdcEmf,STEP*(xSize-2),STEP*ySize,NULL);

    LineTo(hdcEmf,STEP*(xSize-1),STEP*ySize);  

    DeleteObject(SelectObject(hdcEmf,GetStockObject(WHITE_PEN)));

    hemf=CloseEnhMetaFile(hdcEmf);      /*释放emf文件的句柄*/

    return TRUE;

}

函数int DestroyMaze()，用于销毁迷宫，释放内存，代码如下：

int CMaze::DestroyMaze()

{

    int i;

    for(i=0;i<ySize+2;i++)

    {