C++ 图片加背景音乐的处理

在这里插入图片描述

1//music_manager.h
2#pragma once
3
4// 播放背景音乐
5void playBackgroundMusic(const char* music, bool repeat = false, int volume = -1);
6
7// 暂停当前播放的音乐
8void pauseBackgroundMusic();
9
10// 恢复暂停的音乐
11void resumeBackgroundMusic();
12
13// 停止并关闭当前音乐
14void stopBackgroundMusic();
15
16// 关闭所有音乐资源
17void closeAllMusic();
18
19

1//music_manager.cpp
2#include <windows.h>
3#include <mmsystem.h>
4#include <stdio.h>
5#include <vector>
6#include <string>
7
8// 存储所有打开的设备别名
9static std::vector<std::string> g_deviceAliases;
10static std::string g_currentDevice = "";
11
12void playBackgroundMusic(const char* music, bool repeat, int volume)
13{
14    static int i = 0;
15    char alias[20];
16    sprintf(alias, "bgm%d", i++);
17
18    char cmd[256] = { 0 };
19
20    // 打开设备
21    sprintf(cmd, "open \"%s\" alias %s", music, alias);
22    MCIERROR ret = mciSendString(cmd, NULL, 0, NULL);
23    if (ret != 0)
24    {
25        char err[100] = { 0 };
26        mciGetErrorString(ret, err, sizeof(err));
27        printf("[open error]: %s\n", err);
28        return;
29    }
30
31    // 设置音量
32    if (volume != -1)
33    {
34        sprintf(cmd, "setaudio %s volume to %d", alias, volume);
35        ret = mciSendString(cmd, NULL, 0, NULL);
36        if (ret != 0)
37        {
38            char err[100] = { 0 };
39            mciGetErrorString(ret, err, sizeof(err));
40            printf("[volume error]: %s\n", err);
41        }
42    }
43
44    // 播放
45    sprintf(cmd, "play %s %s", alias, repeat ? "repeat" : "");
46    ret = mciSendString(cmd, NULL, 0, NULL);
47    if (ret != 0)
48    {
49        char err[100] = { 0 };
50        mciGetErrorString(ret, err, sizeof(err));
51        printf("[play error]: %s\n", err);
52        // 播放失败时关闭设备
53        sprintf(cmd, "close %s", alias);
54        mciSendString(cmd, NULL, 0, NULL);
55        return;
56    }
57
58    // 保存设备信息
59    g_deviceAliases.push_back(alias);
60    g_currentDevice = alias;
61
62    printf("Playing music: %s on device: %s\n", music, alias);
63}
64
65void pauseBackgroundMusic()
66{
67    if (g_currentDevice.empty()) {
68        printf("No music is currently playing.\n");
69        return;
70    }
71
72    char cmd[100] = { 0 };
73    sprintf(cmd, "pause %s", g_currentDevice.c_str());
74
75    MCIERROR ret = mciSendString(cmd, NULL, 0, NULL);
76    if (ret != 0)
77    {
78        char err[100] = { 0 };
79        mciGetErrorString(ret, err, sizeof(err));
80        printf("[pause error]: %s\n", err);
81    }
82    else
83    {
84        printf("Music paused: %s\n", g_currentDevice.c_str());
85    }
86}
87
88void resumeBackgroundMusic()
89{
90    if (g_currentDevice.empty()) {
91        printf("No music is currently paused.\n");
92        return;
93    }
94
95    char cmd[100] = { 0 };
96    sprintf(cmd, "resume %s", g_currentDevice.c_str());
97
98    MCIERROR ret = mciSendString(cmd, NULL, 0, NULL);
99    if (ret != 0)
100    {
101        char err[100] = { 0 };
102        mciGetErrorString(ret, err, sizeof(err));
103        printf("[resume error]: %s\n", err);
104    }
105    else
106    {
107        printf("Music resumed: %s\n", g_currentDevice.c_str());
108    }
109}
110
111void stopBackgroundMusic()
112{
113    if (g_currentDevice.empty()) {
114        printf("No music is currently playing.\n");
115        return;
116    }
117
118    char cmd[100] = { 0 };
119
120    // 停止播放
121    sprintf(cmd, "stop %s", g_currentDevice.c_str());
122    mciSendString(cmd, NULL, 0, NULL);
123
124    // 关闭设备
125    sprintf(cmd, "close %s", g_currentDevice.c_str());
126    MCIERROR ret = mciSendString(cmd, NULL, 0, NULL);
127    if (ret != 0)
128    {
129        char err[100] = { 0 };
130        mciGetErrorString(ret, err, sizeof(err));
131        printf("[close error]: %s\n", err);
132    }
133    else
134    {
135        printf("Music stopped and closed: %s\n", g_currentDevice.c_str());
136        // 从列表中移除
137        for (auto it = g_deviceAliases.begin(); it != g_deviceAliases.end(); ++it) {
138            if (*it == g_currentDevice) {
139                g_deviceAliases.erase(it);
140                break;
141            }
142        }
143        g_currentDevice = "";
144    }
145}
146
147void closeAllMusic()
148{
149    char cmd[100] = { 0 };
150
151    // 关闭所有设备
152    for (const auto& alias : g_deviceAliases) {
153        sprintf(cmd, "close %s", alias.c_str());
154        mciSendString(cmd, NULL, 0, NULL);
155        printf("Closed device: %s\n", alias.c_str());
156    }
157
158    g_deviceAliases.clear();
159    g_currentDevice = "";
160    printf("All music devices closed.\n");
161}
162

1#include "music_manager.h"
2#include <windows.h>  // 添加这行
3#include<graphics.h>
4#include <conio.h>
5#define WIDTH 800
6#define HEIGHT 600
7IMAGE background;
8int swap;
9void init() {
10    initgraph(WIDTH, HEIGHT,1);  // 初始化图形窗口
11    loadimage(&background, _T("syk.png"));
12    putimage(0, 0, &background);
13}
14
15
16int main()
17{
18    init();
19    // 播放音乐
20    playBackgroundMusic("background.mp3", true, 500);  // 循环播放，音量50%
21
22    while (1) {
23        //如果有鼠标左键按下 swap=~swap;
24        if (MouseHit()) {
25            MOUSEMSG msg = GetMouseMsg();
26            if (msg.uMsg == WM_LBUTTONDOWN) {
27                swap = ~swap;
28                if (swap) {
29                    pauseBackgroundMusic();
30                }
31                else {
32                    resumeBackgroundMusic();
33                }
34            }
35            //如果有鼠标右键按下，结束音乐
36            if (msg.uMsg == WM_RBUTTONDOWN) {
37                playBackgroundMusic("b1.mp3", true, 500);  // 循环播放，音量50%
38            }
39            //如果中间鼠标
40            if (msg.uMsg == WM_MBUTTONDOWN) {
41                closeAllMusic();
42            }
43            //如果双击右键，音量加10
44            if (msg.uMsg == WM_RBUTTONDBLCLK) {
45                
46            }
47        }
48    }
49    // 暂停音乐
50    Sleep(3000);  // 播放3秒后暂停
51    pauseBackgroundMusic();
52
53    // 恢复播放
54    Sleep(2000);  // 暂停2秒后恢复
55    resumeBackgroundMusic();
56
57    // 停止当前音乐
58    Sleep(3000);  // 再播放3秒后停止
59    //stopBackgroundMusic();
60
61    // 播放另一首音乐
62    playBackgroundMusic("b1.mp3", false, 800);  // 不循环，音量80%
63
64
65    Sleep(10000);
66    // 程序结束时关闭所有资源
67    closeAllMusic();
68    
69    _getch();
70    closegraph();  // 关闭图形窗口
71
72    return 0;
73}
74

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