基于easyx和C++实现的鼠标交互界面（点击按钮）| 系统设计

实现效果一览：

当鼠标放上去后效果：

代码实现及详解：

#include<iostream>
using namespace std;
#include <graphics.h>
#include <windows.h>
#include <conio.h>
#include<string.h>
/*
* 使用easyx 制作的菜单界面
*/

// 定义菜单按钮的宽度和高度
const int BUTTON_WIDTH = 200;
const int BUTTON_HEIGHT = 50;

//总的操作数再加上1
#define operations 11

// 定义按钮的坐标和状态
struct Button {
    int x, y; // 按钮的左上角坐标
    bool isHovered; // 是否被鼠标悬停
};

void Clear_() {
    system("cls");
}

//函数声明
wchar_t* multiByteToWideChar(const string& pKey);
char* wideCharToMultiByte(wchar_t* pWCStrKey);
bool isInButtonArea(Button button, int x, int y);
void drawButton(Button button, string str);
void Show_str_to_PC(int x, int y, string str, int size);

int main() {
    //初始化窗口
    initgraph(640, 660);

    //载入背景图片
    IMAGE bg_image;
    loadimage(&bg_image, _T("schoolmap.jpg"), 640, 660); // 加载背景图片

    //绘制背景图
    putimage(0, 0, &bg_image);

    //操作数组
    string texts[operations - 1] = { "显示景点信息\0","查找景点\0","查找两个景点间的简单路径\0","查找所有路径\0","退出系统\0","添加景点\0","删除景点\0","修改景点信息\0","添加两个景点间的路径\0","删除两个景点间的路径\0" };
  
    //用来指定显示范围的变量
    RECT r;

    // 创建按钮数组
    Button* buttons = new Button[operations - 1];

    //初始化按钮
    for (int i = 0; i < operations - 1; i++) {
        buttons[i].isHovered = false;
        buttons[i].x = 220;
        buttons[i].y = 150 + i * 50;
    }

    //绘制背景图
    putimage(0, 0, &bg_image);

    
    // 循环处理消息
    while (true) {

        // 绘制界面      
        setbkmode(TRANSPARENT);
        settextstyle(45, 0, _T("宋体"), 0, 0, FW_BOLD, 0, 0, 0);
        settextcolor(WHITE);
        r = { 0,60, 639,120 };
        drawtext(_T("校园导游系统"), &r, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
        r = { 0,100,639,160 };
        settextstyle(20, 0, _T("宋体"), 0, 0, FW_BOLD, 0, 0, 0);
        drawtext(_T("欢迎来到XXXX大学"), &r, DT_CENTER | DT_VCENTER | DT_SINGLELINE);

        //遍历 画出按钮
        for (int i = 0; i < operations - 1; i++) {
            drawButton(buttons[i], texts[i]);
        }

        // 循环处理鼠标消息
        if (MouseHit()) {
            MOUSEMSG m = GetMouseMsg();
            switch (m.uMsg) {
            case WM_MOUSEMOVE:
                // 鼠标移动时判断是否在按钮区域内
                for (int i = 0; i < operations - 1; i++) {
                    buttons[i].isHovered = isInButtonArea(buttons[i], m.x, m.y);
                }
                break;
            case WM_LBUTTONUP:
                // 左键抬起时判断是否在按钮区域内
                for (int i = 0; i < operations - 1; i++) {
                    if (isInButtonArea(buttons[i], m.x, m.y)) {
                        switch (i) {//可以在各个case中添加对应的处理函数  
                        case 0:
                            Clear_();
                            cleardevice();//清理屏幕
                            cout << "显示景点信息" << endl;//这里可以用对应的函数绘制二级界面
                            break;
                        case 1:
                            Clear_();
                            cleardevice();
                            cout << "查找景点" << endl;
                            break;
                        case 2:
                            Clear_();
                            cleardevice();
                            cout << "查找两个景点间的简单路径" << endl;
                            break;
                        case 3:
                            Clear_();
                            cleardevice();
                            cout << "查找所有路径" << endl;
                            break;
                        case 4:
                            Clear_();
                            cleardevice();
                            cout << "退出系统" << endl;
                            break;
                        case 5:
                            Clear_();
                            cleardevice();
                            cout << "添加景点" << endl;
                            break;
                        case 6:
                            Clear_();
                            cleardevice();
                            cout << "删除景点" << endl;
                            break;
                        case 7:
                            Clear_();
                            cleardevice();
                            cout << "修改景点" << endl;
                            break;
                        case 8:
                            Clear_();
                            cleardevice();
                            cout << "添加景点路径" << endl;
                            break;
                        case 9:
                            Clear_();
                            cleardevice();
                            cout << "删除景点路径" << endl;
                            break;

                        }
                        putimage(0, 0, &bg_image);//重绘背景图
                    }

                }

            }
        }

        Sleep(10);//刷新频率
    }

    closegraph();
    return 0;
}

//作此界面可能需要的函数

/*wchart 转string 函数*/
char* wideCharToMultiByte(wchar_t* pWCStrKey)
{
    //第一次调用确认转换后单字节字符串的长度，用于开辟空间
    int pSize = WideCharToMultiByte(CP_OEMCP, 0, pWCStrKey, wcslen(pWCStrKey), NULL, 0, NULL, NULL);
    char* pCStrKey = new char[pSize + 1];
    //第二次调用将双字节字符串转换成单字节字符串
    WideCharToMultiByte(CP_OEMCP, 0, pWCStrKey, wcslen(pWCStrKey), pCStrKey, pSize, NULL, NULL);
    pCStrKey[pSize] = '\0';
    return pCStrKey;
}

/*string 转 wchar 函数*/
wchar_t* multiByteToWideChar(const string& pKey)
{
    const char* pCStrKey = pKey.c_str();
    //第一次调用返回转换后的字符串长度，用于确认为wchar_t*开辟多大的内存空间
    int pSize = MultiByteToWideChar(CP_OEMCP, 0, pCStrKey, strlen(pCStrKey) + 1, NULL, 0);
    wchar_t* pWCStrKey = new wchar_t[pSize];
    //第二次调用将单字节字符串转换成双字节字符串
    MultiByteToWideChar(CP_OEMCP, 0, pCStrKey, strlen(pCStrKey) + 1, pWCStrKey, pSize);
    return pWCStrKey;
}

// 判断是否在按钮区域内
bool isInButtonArea(Button button, int x, int y) {
    return (x >= button.x && x <= button.x + BUTTON_WIDTH
        && y >= button.y && y <= button.y + BUTTON_HEIGHT);
}

// 绘制按钮
void drawButton(Button button, string str) {
    if (button.isHovered) {
        setfillcolor(WHITE); settextcolor(RGB(59, 90, 166));
    }
    else {
        setfillcolor(RGB(59, 90, 166));
        settextcolor(WHITE);
    }
    fillroundrect(button.x, button.y, button.x + BUTTON_WIDTH, button.y + BUTTON_HEIGHT, 10, 10);
    RECT r = { button.x, button.y, button.x + BUTTON_WIDTH, button.y - 1 + BUTTON_HEIGHT - 1 };
    setbkmode(TRANSPARENT);
    settextstyle(20, 0, _T("微软雅黑"), 0, 0, FW_BOLD, 0, 0, 0);
    drawtext(multiByteToWideChar(str), &r, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
}

//输出指定字符串到屏幕指定位置
void Show_str_to_PC(int x, int y, string str, int size) {
    setbkmode(TRANSPARENT);
    settextstyle(size, 0, _T("宋体"), 0, 0, FW_BOLD, 0, 0, 0);
    settextcolor(WHITE);
    outtextxy(x, y, multiByteToWideChar(str));
}

欢迎讨论！