将以上代码用类封装实现

好的，我将帮您将以上代码进行封装成一个类。请看下面的代码：

#include <graphics.h>
#include <easyx.h>
#include <conio.h>
#include <cmath>
#include <iostream>

class GraphicsApp {
private:
    int width;
    int height;
    IMAGE img;
    const _TCHAR* bgImagePath;
    const _TCHAR* topic;
    const _TCHAR* poem[4];
    
public:
    GraphicsApp(int w, int h, const _TCHAR* imagePath, const _TCHAR* t, const _TCHAR** p) {
        width = w;
        height = h;
        bgImagePath = imagePath;
        topic = t;
        for (int i = 0; i < 4; ++i) {
            poem[i] = p[i];
        }
    }
    
    void run() {
        initgraph(width, height);
        loadimage(&img, bgImagePath);
        Resize(NULL, img.getwidth(), img.getheight());
        
        putimage(0, 0, &img);
        setbkmode(RED);
        settextcolor(0xff0000);
        settextstyle(20, 0, _T("楷书"));
        
        int nHeight = textheight(topic[0]);
        outtextxy(30, 100, topic);
        
        for (int i = 0; i < 4; ++i) {
            outtextxy(20, 100 + nHeight * 1.5 * (2 + i), poem[i]);
        }
        
        _getch();
        closegraph();
    }
};

int main()
{
    const _TCHAR* bgImagePath = _T("C:/Users/86181/Pictures/Camera Roll/imgBG.jpg");
    const _TCHAR* topic = _T("送元二使安西");
    const _TCHAR* poem[4] = { _T("渭城朝雨浥轻尘，"), _T("客舍青青柳色新。"),
                              _T("劝君更尽一杯酒，"), _T("西出阳关无故人。") };
    
    GraphicsApp app(600, 800, bgImagePath, topic, poem);
    app.run();
    
    return 0;
}

以上代码将原来的代码封装到了名为`GraphicsApp`的类中，并添加了构造函数和`run`方法来运行图形界面。在`main`函数中，创建了一个`GraphicsApp`对象并调用`run`方法来执行程序。这样可以更好地组织代码，并提高代码的可读性和可维护性。