前言

由于之前没有开发过Windows下跑的exe程序，听着歌，想着能不能用C语言写一个windows跑的音乐播放器呢？

于是乎便开始探寻想法的可行性，难易程度，搜寻资料了解到，可以使用EasyX图形库做UI界面，而且学习成本不高，相对比较简单，看看文档示例很快就能入手；然后，播放声音的话可以调用WinMM.lib，这个需要了解它的调用函数和操作指令，不需要全部了解，用到什么再去查什么，对症下药就行。

软件工程下载链接

1. 工程建立

这里使用的是VS2022，组件使用C++的桌面开发，然后建立控制台工程即可。

EasyX是基于C++开发的，所以需要创建添加一个.cpp文件；

EasyX提供了俩个 .lib库，分别对应不同的字符集；

#ifndef __cplusplus
#error EasyX is only for C++
#endif

#ifdef UNICODE
#pragma comment(lib,”EasyXw.lib”)
#else
#pragma comment(lib,”EasyXa.lib”)
#endif

EasyX获取

EasyX下载链接，去官网下载并安装到vs中，然后把它的库文件和头文件复制到你的调用库路径下。

WinMM.lib获取

在Windows下搜索WinMM.lib,找到你对应的那一个添加进工程。

2. 实现效果展示

2.1 效果图片展示

音乐图标找的有点丑，懒得换了，图片没做处理，可以看到白色背景色，主要要的是功能的实现，其它的能将就就将就着用。

中间左右绿色的两个箭头用于切换背景图，还有显示歌名、播放进度等……

2.2 录频效果展示

点击视频链接

操作录屏点击的是对应图标的区域，没显示点击的鼠标。

EasyX也支持按键字符输入功能，让你的播放器锦上添花，这个功能这里没去做。

3. 软件设计框架

3.1 实现的功能框架

切换背景图：把图片添加到指定文件夹里，然后软件实现到指定文件夹里搜索，把所有背景图链接起来，就可以实现上下切换背景图了；（下图为我的工程文件夹）

添加音乐：把音乐添加到指定文件夹里，然后软件实现到指定文件夹里搜索，把所有音乐都链接起来，并储存音乐其它信息，就可以实现上下切换歌曲了；

鼠标事件：鼠标点击获取事件，执行相对应功能；

功能：歌曲播放、暂停；

歌曲上、下曲选择；

歌曲名称显示；

歌曲进度条、时间长度；

歌曲音量加、减；

歌曲快进、回退；

歌曲循环/顺序播放。

3.2 结构体设计

mouse_t结构体获取需要处理的功能事件，点击对应的图标，获取对应的事件；

music_t结构体存储音乐信息：曲名、时间长度等；

image_t结构体存储图片信息；

dir_t 结构体储存文件夹绝对路径；

home_t 结构体对应主界面的所有信息。

typedef enum _mouse_message{PLAY_PAUSE_HANDLE = 0,//播放暂停事件处理BK_ZUO_HANDLE,BK_YOU_HANDLE,VOL_UP_HANDLE,VOL_DOWN_HANDLE,NEXT_HANDLE,PREVIOUS_HANDLE,FAST_JIN_HANDLE,FAST_TUI_HANDLE,PLAY_WAY_HANDLE,//播放方式事件处理}mouse_t;typedef struct _music {char name[48];//歌名int music_index;//歌曲索引unsigned int music_len; //歌曲长度unsigned int cur_seek;//当前播放进度struct _music *pre;struct _music *next;}music_t;typedef struct _image {char image_name[48];//图片名int image_index;//图片索引struct _image* pre;struct _image* next;}image_t;typedef struct _icon {IMAGE play_pause_icon;IMAGE fast_tui_icon;IMAGE fast_jin_icon;IMAGE previous_icon;IMAGE next_icon;IMAGE vol_up_icon;IMAGE vol_down_icon;IMAGE play_way_icon;IMAGE bk_zuo_icon;IMAGE bk_you_icon;}icon_t;typedef struct _dir {char main_dir[MAX_PATH];//主目录char mp3_dir[MAX_PATH]; //mp3目录char bk_image_dir[MAX_PATH]; //image背景目录char icon_image_dir[MAX_PATH]; //image-icon目录}dir_t;typedef struct __home_win {IMAGE home_img; //桌面背景dir_t dir;//目录music_t *music; //歌单int play_state; //歌曲播放状态bool is_repeat; //是否循环播放int music_count;//歌曲数目int music_vol;//音乐音量int current_music_index;//当前歌曲image_t* bk;//背景图icon_t icon;//icon图标int current_bk_index; //当前背景索引mouse_t mouse_m;//鼠标操作}home_t;

3.3 音频播放指令

3.3.1 音频调用函数

mciSendString 函数：

第一个参数：要发送的命令字符串。字符串结构是:[命令][设备别名][命令参数].
第二个参数：返回信息的缓冲区,为一指定了大小的字符串变量.
第三个参数：缓冲区的大小,就是字符变量的长度.
第四个参数：回调方式，一般设为零
返回值：函数执行成功返回零，否则返回错误代码

3.3.2 open打开设备指令

open后面接的是音频的路径，可以是绝对路径也可以是相对路径，注意Windows下的路径是反斜杠 ‘\’ 。

例如：mciSendString(“open music.mp3”, NULL, 0, NULL);

3.3.3 close 关闭设备指令

例如：mciSendString(“close music.mp3”, NULL, 0, NULL);

3.3.4 play 播放音频指令

例如：mciSendString(“play music.mp3”, NULL, 0, NULL);

3.3.5 pause 暂停音频指令

例如：mciSendString(“pause music.mp3”, NULL, 0, NULL);

3.3.6 resume 继续音频指令

例如：mciSendString(“resume music.mp3”, NULL, 0, NULL);

3.3.7 pause 暂停音频指令

例如：mciSendString(“pause music.mp3”, NULL, 0, NULL);

3.3.8 repeat 循环音频指令

例如：mciSendString(“play music.mp3 repeat”, NULL, 0, NULL);

3.3.9 status 查询音频状态指令

例如：mciSendString(“status music.mp3 length”, buff, LEN, NULL);//获取长度

mciSendString(“status music.mp3 position”, buff, LEN, NULL);//获取位置

mciSendString(“status music.mp3 mode”, buff, LEN, NULL);//获取工作模式

3.3.10 setaudio设置音量指令

例如：mciSendString(“setaudio music.mp3 volume to 200”, NULL, 0, NULL);

3.3.11 指令示例代码

/***********打开设备**********/void open_music_Cmd(music_t* music_p){size_t name_len = 0;char cmd_buff[128] = "open ./mp3/";name_len = strlen(music_p->name)+1;snprintf(&cmd_buff[strlen(cmd_buff)], name_len, music_p->name);DEBUG("%s\n",cmd_buff);mciSendString(cmd_buff, NULL, 0, NULL);}

3.4 获取鼠标事件

MouseHit()：判断是否有鼠标事件发生，

WM_LBUTTONUP：表示左键单击抬起事件；相应的还有双击、右击等其它事件，我只用到了左击事件；getmessage()函数是一个阻塞函数，直到获取鼠标信息为止；

这里调用相应的处理函数即可。鼠标有其它很多事件就不一一说明，可以查看EasyX在线文档。

ExMessage mess;// 定义消息处理变量if (MouseHit()) {mess = getmessage(EX_MOUSE);switch (mess.message){case WM_LBUTTONUP:coord_handle(home_p, mess.x, mess.y);DEBUG("mouse event.\n");break;default:break;}}

3.5 Windows下定时器功能

Windows下开启一个周期定时器，间隔一定时间就去更新UI、信息状态等。

由于我开启的是周期定时器，所以全程不需要关闭它；否则回调完需要关闭该定时器。

timeSetEvent(500,0, (LPTIMECALLBACK)TimerCallback, NULL, TIME_PERIODIC); //开启500ms的周期定时器

void WINAPI TimerCallback(UINT uTimerID, UINT uMsg, DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)//定时器回调函数

4 总代码示例

这是我只适配了.mp3格式的音乐和.png格式的背景图；

功能都是边想边加的，有些地方有点乱，没去精简。

/************************************** *Fuction:c语言Windows下实现音乐播放功能 *Author：Qurry *Date:12/14/2022 *************************************/#include #include  //图形库#include #include #include  //音频#include #include //操作目录函数#include #include #if 1#define DEBUGprintf#else#define DEBUG#endif#define LCD_WIDTH1280 //屏宽#define LCD_HEIGH 720//屏高#define ICON_WIDTH 60 //icon宽#define ICON_HEIGH60 //icon高#define PLAY_PAUSE_COORD_X((LCD_WIDTH/2)-(ICON_WIDTH/2))#define PLAY_PAUSE_COORD_Y(LCD_HEIGH- (ICON_HEIGH*3))#define PREVIOUS_COORD_X(PLAY_PAUSE_COORD_X - ICON_WIDTH -30)#define PREVIOUS_COORD_Y(LCD_HEIGH- (ICON_HEIGH*3))#define NEXT_COORD_X(PLAY_PAUSE_COORD_X + ICON_WIDTH +30)#define NEXT_COORD_Y(LCD_HEIGH- (ICON_HEIGH*3))#define PLAY_WAY_COORD_X(NEXT_COORD_X + ICON_WIDTH +30)#define PLAY_WAY_COORD_Y(LCD_HEIGH- (ICON_HEIGH*3))#define VOL_UP_COORD_X(300)#define VOL_UP_COORD_Y((LCD_HEIGH/2)+ICON_HEIGH)#define VOL_DOWN_COORD_X(VOL_UP_COORD_X)#define VOL_DOWN_COORD_Y(VOL_UP_COORD_Y+ICON_HEIGH+30)#define FAST_JIN_COORD_X(LCD_WIDTH - VOL_UP_COORD_X-ICON_WIDTH)#define FAST_JIN_COORD_Y(VOL_UP_COORD_Y)#define FAST_TUI_COORD_X(FAST_JIN_COORD_X)#define FAST_TUI_COORD_Y(VOL_DOWN_COORD_Y)#define BK_ZUO_COORD_X(30)#define BK_ZUO_COORD_Y((LCD_HEIGH/2)-25)#define BK_YOU_COORD_X(LCD_WIDTH -BK_ZUO_COORD_X-50)#define BK_YOU_COORD_Y((LCD_HEIGH/2)-25)typedef enum _mouse_message{PLAY_PAUSE_HANDLE = 0,//播放暂停事件处理BK_ZUO_HANDLE,BK_YOU_HANDLE,VOL_UP_HANDLE,VOL_DOWN_HANDLE,NEXT_HANDLE,PREVIOUS_HANDLE,FAST_JIN_HANDLE,FAST_TUI_HANDLE,PLAY_WAY_HANDLE,//播放方式事件处理}mouse_t;typedef struct _music {char name[48];//歌名int music_index;//歌曲索引unsigned int music_len; //歌曲长度unsigned int cur_seek;//当前播放进度struct _music *pre;struct _music *next;}music_t;typedef struct _image {char image_name[48];//图片名int image_index;//图片索引struct _image* pre;struct _image* next;}image_t;typedef struct _icon {IMAGE play_pause_icon;IMAGE fast_tui_icon;IMAGE fast_jin_icon;IMAGE previous_icon;IMAGE next_icon;IMAGE vol_up_icon;IMAGE vol_down_icon;IMAGE play_way_icon;IMAGE bk_zuo_icon;IMAGE bk_you_icon;}icon_t;typedef struct _dir {char main_dir[MAX_PATH];//主目录char mp3_dir[MAX_PATH]; //mp3目录char bk_image_dir[MAX_PATH]; //image背景目录char icon_image_dir[MAX_PATH]; //image-icon目录}dir_t;typedef struct __home_win {IMAGE home_img; //桌面背景dir_t dir;//目录music_t *music; //歌单int play_state; //歌曲播放状态bool is_repeat; //是否循环播放int music_count;//歌曲数目int music_vol;//音乐音量int current_music_index;//当前歌曲image_t* bk;//背景图icon_t icon;//icon图标int current_bk_index; //当前背景索引mouse_t mouse_m;//鼠标操作}home_t;int timer_per = 0;unsigned int music_seek[3] = { 420,0,0 };void update_ui(home_t* home_p);void status_music_len_Cmd(music_t* music_p);void status_music_position_Cmd(music_t* music_p);/************************************* * Fuction:获取工程路径 * ***********************************/void get_main_dir(home_t* home_p){int buff_index = 0;int out_index = 0;char dir_buff[MAX_PATH];char dir_name[] = "\\\\";_getcwd(dir_buff,MAX_PATH);for (buff_index = 0; buff_index dir.main_dir[out_index++] = dir_buff[buff_index];home_p->dir.main_dir[out_index++] = '\\';}else {home_p->dir.main_dir[out_index++] = dir_buff[buff_index];}}snprintf(&home_p->dir.main_dir[out_index],strlen(dir_name)+1,dir_name);DEBUG("main-dir:%s\n", home_p->dir.main_dir);}/*********获取mp3存放目录*********/void get_mp3_dir(home_t* home_p ,const char* mp3_dir){size_t main_dir_len = 0;main_dir_len = strlen(home_p->dir.main_dir);snprintf(home_p->dir.mp3_dir, main_dir_len+1, home_p->dir.main_dir);snprintf(&home_p->dir.mp3_dir[main_dir_len], strlen(mp3_dir)+1, mp3_dir);DEBUG("dir:%s\n", home_p->dir.mp3_dir);}/*********获取背景img存放目录*********/void get_bk_image_dir(home_t* home_p, const char* img_dir){size_t main_dir_len = 0;main_dir_len = strlen(home_p->dir.main_dir);snprintf(home_p->dir.bk_image_dir, main_dir_len + 1, home_p->dir.main_dir);snprintf(&home_p->dir.bk_image_dir[main_dir_len], strlen(img_dir) + 1, img_dir);DEBUG("bk-image-dir:%s\n", home_p->dir.bk_image_dir);}/*********获取icon-img存放目录*********/void get_icon_image_dir(home_t* home_p, const char* img_dir){size_t main_dir_len = 0;main_dir_len = strlen(home_p->dir.main_dir);snprintf(home_p->dir.icon_image_dir, main_dir_len + 1, home_p->dir.main_dir);snprintf(&home_p->dir.icon_image_dir[main_dir_len], strlen(img_dir) + 1, img_dir);DEBUG("icon-image-dir:%s\n", home_p->dir.icon_image_dir);}/********** 获取.mp3后缀文件***********/void get_all_mp3_file(home_t *home_p ,const char *mp3){intptr_t fd;//文件头struct _finddata_t file;music_t* music_p = NULL;music_t* music_p1 = NULL;if (_chdir(home_p->dir.mp3_dir)) {//切换到mp3目录下DEBUG("change mp3-dir error!\n");return;}fd = _findfirst(mp3, &file);//找到第一个.mp3后缀的文件if (fd dir.main_dir)) {//返回主目录DEBUG("change main-dir error!\n");}return;}while (1){if (home_p->music == NULL) {home_p->music = (music_t *)malloc(sizeof(music_t));if (home_p->music == NULL) {exit(-1);}snprintf(home_p->music->name, strlen(file.name) + 1, file.name); home_p->music->music_index = 1;DEBUG("%s,index:%d\n", home_p->music->name, home_p->music->music_index);home_p->music->music_len = 0;home_p->music->cur_seek = 0;home_p->music->pre = NULL;home_p->music->next = NULL;}else {music_p = (music_t*)home_p->music;while (music_p->next != NULL) {music_p = music_p->next;}music_p1 = (music_t*)malloc(sizeof(music_t));if (music_p1 == NULL) {exit(-1);}music_p->next = music_p1;snprintf(music_p1->name, strlen(file.name) + 1, file.name);music_p1->music_index = music_p->music_index + 1;DEBUG("%s,index:%d\n", music_p1->name, music_p1->music_index);music_p1->music_len = 0;music_p1->cur_seek = 0;music_p1->pre = music_p;music_p1->next = NULL;}home_p->music_count++;if (_findnext(fd, &file) != 0) {break;}}if (_chdir(home_p->dir.main_dir)) {//返回主目录DEBUG("change main-dir error!\n");return;}}/*********** 显示标题 ***********/void show_title(){settextstyle(48, 28, "黑体");settextcolor(LIGHTBLUE);setbkmode(TRANSPARENT);outtextxy(LCD_WIDTH / 2 - 160, 30, "Music-Player");}/*************** 显示歌名***************/void show_song_name(home_t* home_p){music_t* music_p = NULL;settextstyle(32, 24, "黑体");settextcolor(YELLOW);setbkmode(TRANSPARENT);if (home_p->music == NULL) {return;}music_p = (music_t*)home_p->music;while (1) {if (home_p->current_music_index == music_p->music_index) {outtextxy((LCD_WIDTH/3)+90, LCD_HEIGH / 3, music_p->name);break;}if (music_p->next != NULL) {music_p = music_p->next;}else {break;}}}/*************显示歌曲进度 ************/void show_music_time_schedule(home_t* home_p){music_t* music_p = NULL;char min[8], sec[8];char time_point[] = ":";char show_buff[20];settextstyle(28, 20, "楷体");settextcolor(GREEN);setfillcolor(RED);//填充色setbkmode(TRANSPARENT);if (home_p->music == NULL) {return;}music_p = (music_t*)home_p->music;while (1) {if (home_p->current_music_index == music_p->music_index) {_itoa_s((music_p->music_len / 1000 / 60), min, 10); //分钟_itoa_s((music_p->music_len / 1000 % 60), sec, 10); //秒钟snprintf(show_buff,strlen(min)+1,min);snprintf(&show_buff[strlen(show_buff)], strlen(time_point) + 1, time_point);snprintf(&show_buff[strlen(show_buff)], strlen(sec) + 1, sec);outtextxy(1010,650, show_buff);fillrectangle(420,660, 1000,670);if (home_p->play_state == 1) {setfillcolor(GREEN);status_music_position_Cmd(music_p);//获取当前歌曲进度music_seek[1] = music_p->cur_seek / 1000 ;music_seek[2] = music_p->music_len / 1000;music_seek[0] = 420 + (580 * music_seek[1] / music_seek[2]);fillrectangle(420, 660, music_seek[0], 670);}else {setfillcolor(GREEN);fillrectangle(420, 660, music_seek[0], 670);}break;}if (music_p->next != NULL) {music_p = music_p->next;}else {break;}}}/**********获取背景文件************/void get_bk_image_file(home_t* home_p, const char* img){intptr_t fd;//文件头struct _finddata_t file;image_t* image_p = NULL;image_t* image_p1 = NULL;if (_chdir(home_p->dir.bk_image_dir)) {DEBUG("change bk-img-dir error!\n");return;}fd = _findfirst(img, &file);if (fd dir.main_dir)) {//返回主目录DEBUG("change main-dir error!\n");}return;}while (1){if (home_p->bk == NULL) {home_p->bk = (image_t *)malloc(sizeof(image_t));if (home_p->bk == NULL) {exit(-1);}snprintf(home_p->bk->image_name, strlen(file.name) + 1, file.name);home_p->bk->image_index = 1;home_p->bk->pre = NULL;home_p->bk->next = NULL;DEBUG("%s,index:%d\n", home_p->bk->image_name, home_p->bk->image_index);}else {image_p = (image_t*)home_p->bk;while (image_p->next != NULL) {image_p = image_p->next;}image_p1 = (image_t *)malloc(sizeof(image_t));if (image_p1 == NULL) {exit(-1);}image_p->next = image_p1;snprintf(image_p1->image_name, strlen(file.name) + 1, file.name);image_p1->image_index = image_p->image_index + 1;image_p1->pre = image_p;image_p1->next = NULL;DEBUG("%s,index:%d\n", image_p1->image_name,image_p1->image_index);}if (_findnext(fd, &file) != 0) {break;}}if (_chdir(home_p->dir.main_dir)) {//返回主目录DEBUG("change main-dir error!\n");return;}}/********** 加载背景 **********/void load_img(home_t* home_p){char img_dir[MAX_PATH];size_t len = 0;image_t* img = NULL;img = home_p->bk;while (1) {if (home_p->current_bk_index == img->image_index) {len = strlen(home_p->dir.bk_image_dir);snprintf(img_dir, len + 1, home_p->dir.bk_image_dir);snprintf(&img_dir[len], strlen(img->image_name)+ 1, img->image_name);DEBUG("load-bk-img:%s\n", img_dir);loadimage(&home_p->home_img, img_dir);//加载背景图片putimage(0, 0, &home_p->home_img);break;}if (img->next != NULL) {img = img->next;}else {break;}} }void load_bk_zuo_icon(home_t* home_p, const char* icon_name, int x, int y){char icon_dir[MAX_PATH];size_t len = 0;if (icon_name == NULL) {return;}len = strlen(home_p->dir.icon_image_dir);snprintf(icon_dir, len + 1, home_p->dir.icon_image_dir);snprintf(&icon_dir[len], strlen(icon_name) + 1, icon_name);DEBUG("load-icon:%s\n", icon_dir);loadimage(&home_p->icon.bk_zuo_icon, icon_dir); putimage(x, y, &home_p->icon.bk_zuo_icon);}void load_bk_you_icon(home_t* home_p, const char* icon_name, int x, int y){char icon_dir[MAX_PATH];size_t len = 0;if (icon_name == NULL) {return;}len = strlen(home_p->dir.icon_image_dir);snprintf(icon_dir, len + 1, home_p->dir.icon_image_dir);snprintf(&icon_dir[len], strlen(icon_name) + 1, icon_name);DEBUG("load-icon:%s\n", icon_dir);loadimage(&home_p->icon.bk_you_icon, icon_dir);putimage(x, y, &home_p->icon.bk_you_icon);}void load_play_pause_icon(home_t* home_p,const char* icon_name,int x,int y){char icon_dir[MAX_PATH];size_t len = 0;if (icon_name == NULL) {return;}len = strlen(home_p->dir.icon_image_dir);snprintf(icon_dir, len + 1, home_p->dir.icon_image_dir);snprintf(&icon_dir[len], strlen(icon_name) + 1, icon_name);DEBUG("load-icon:%s\n", icon_dir);loadimage(&home_p->icon.play_pause_icon, icon_dir);//加载play-iconputimage(x, y, &home_p->icon.play_pause_icon);}void load_previous_icon(home_t* home_p, const char* icon_name, int x, int y){char icon_dir[MAX_PATH];size_t len = 0;if (icon_name == NULL) {return;}len = strlen(home_p->dir.icon_image_dir);snprintf(icon_dir, len + 1, home_p->dir.icon_image_dir);snprintf(&icon_dir[len], strlen(icon_name) + 1, icon_name);DEBUG("load-icon:%s\n", icon_dir);loadimage(&home_p->icon.previous_icon, icon_dir);putimage(x, y, &home_p->icon.previous_icon);}void load_next_icon(home_t* home_p, const char* icon_name, int x, int y){char icon_dir[MAX_PATH];size_t len = 0;if (icon_name == NULL) {return;}len = strlen(home_p->dir.icon_image_dir);snprintf(icon_dir, len + 1, home_p->dir.icon_image_dir);snprintf(&icon_dir[len], strlen(icon_name) + 1, icon_name);DEBUG("load-icon:%s\n", icon_dir);loadimage(&home_p->icon.next_icon, icon_dir);putimage(x, y, &home_p->icon.next_icon);}void load_fast_jin_icon(home_t* home_p, const char* icon_name, int x, int y){char icon_dir[MAX_PATH];size_t len = 0;if (icon_name == NULL) {return;}len = strlen(home_p->dir.icon_image_dir);snprintf(icon_dir, len + 1, home_p->dir.icon_image_dir);snprintf(&icon_dir[len], strlen(icon_name) + 1, icon_name);DEBUG("load-icon:%s\n", icon_dir);loadimage(&home_p->icon.fast_jin_icon, icon_dir);putimage(x, y, &home_p->icon.fast_jin_icon);}void load_fast_tui_icon(home_t* home_p, const char* icon_name, int x, int y){char icon_dir[MAX_PATH];size_t len = 0;if (icon_name == NULL) {return;}len = strlen(home_p->dir.icon_image_dir);snprintf(icon_dir, len + 1, home_p->dir.icon_image_dir);snprintf(&icon_dir[len], strlen(icon_name) + 1, icon_name);DEBUG("load-icon:%s\n", icon_dir);loadimage(&home_p->icon.fast_tui_icon, icon_dir);putimage(x, y, &home_p->icon.fast_tui_icon);}void load_vol_up_icon(home_t* home_p, const char* icon_name, int x, int y){char icon_dir[MAX_PATH];size_t len = 0;if (icon_name == NULL) {return;}len = strlen(home_p->dir.icon_image_dir);snprintf(icon_dir, len + 1, home_p->dir.icon_image_dir);snprintf(&icon_dir[len], strlen(icon_name) + 1, icon_name);DEBUG("load-icon:%s\n", icon_dir);loadimage(&home_p->icon.vol_up_icon, icon_dir);putimage(x, y, &home_p->icon.vol_up_icon);}void load_vol_down_icon(home_t* home_p, const char* icon_name, int x, int y){char icon_dir[MAX_PATH];size_t len = 0;if (icon_name == NULL) {return;}len = strlen(home_p->dir.icon_image_dir);snprintf(icon_dir, len + 1, home_p->dir.icon_image_dir);snprintf(&icon_dir[len], strlen(icon_name) + 1, icon_name);DEBUG("load-icon:%s\n", icon_dir);loadimage(&home_p->icon.vol_down_icon, icon_dir);putimage(x, y, &home_p->icon.vol_down_icon);}void load_play_way_icon(home_t* home_p, const char* icon_name, int x, int y){char icon_dir[MAX_PATH];size_t len = 0;if (icon_name == NULL) {return;}len = strlen(home_p->dir.icon_image_dir);snprintf(icon_dir, len + 1, home_p->dir.icon_image_dir);snprintf(&icon_dir[len], strlen(icon_name) + 1, icon_name);DEBUG("load-icon:%s\n", icon_dir);loadimage(&home_p->icon.play_way_icon, icon_dir);putimage(x, y, &home_p->icon.play_way_icon);}void load_all_icons(home_t* home_p){if (home_p->play_state == 0 || home_p->play_state == 2|| home_p->play_state == 3) {load_play_pause_icon(home_p,"play.png", PLAY_PAUSE_COORD_X, PLAY_PAUSE_COORD_Y);}else if(home_p->play_state == 1) {load_play_pause_icon(home_p, "pause.png", PLAY_PAUSE_COORD_X, PLAY_PAUSE_COORD_Y);} load_previous_icon(home_p, "previous.png", PREVIOUS_COORD_X, PREVIOUS_COORD_Y);load_next_icon(home_p, "next.png", NEXT_COORD_X, NEXT_COORD_Y);if (home_p->is_repeat == false) {load_play_way_icon(home_p, "random.png", PLAY_WAY_COORD_X, PLAY_WAY_COORD_Y);}else {load_play_way_icon(home_p, "repeat.png", PLAY_WAY_COORD_X, PLAY_WAY_COORD_Y);}load_fast_jin_icon(home_p, "fast_jin.png", FAST_JIN_COORD_X, FAST_JIN_COORD_Y);load_fast_tui_icon(home_p, "fast_tui.png", FAST_TUI_COORD_X, FAST_TUI_COORD_Y);load_vol_up_icon(home_p, "vol_up.png", VOL_UP_COORD_X, VOL_UP_COORD_Y);load_vol_down_icon(home_p, "vol_down.png", VOL_DOWN_COORD_X, VOL_DOWN_COORD_Y);load_bk_zuo_icon(home_p, "bk_zuo.png", BK_ZUO_COORD_X, BK_ZUO_COORD_Y);load_bk_you_icon(home_p, "bk_you.png", BK_YOU_COORD_X, BK_YOU_COORD_Y);}/************* 上一张背景 ************/void previous_bk_img(home_t* home_p){image_t* image_p = NULL;if (home_p->bk == NULL) {return;}if (home_p->current_bk_index == 1) {return;}image_p = (image_t *)home_p->bk;while (1) {if (home_p->current_bk_index == image_p->image_index) {home_p->current_bk_index = image_p->pre->image_index;image_p = image_p->pre;update_ui(home_p);break;}if (image_p->next != NULL) {image_p = image_p->next;}else {break;}} }/************* 下一张背景 ************/void next_bk_img(home_t* home_p){image_t* image_p = NULL;if (home_p->bk == NULL) {return;}image_p = (image_t*)home_p->bk;while (image_p->next != NULL) {if (home_p->current_bk_index == image_p->image_index) {home_p->current_bk_index = image_p->next->image_index;image_p = image_p->next;update_ui(home_p);break;}image_p = image_p->next;}}/***********打开设备**********/void open_music_Cmd(music_t* music_p){size_t name_len = 0;char cmd_buff[128] = "open ./mp3/";name_len = strlen(music_p->name)+1;snprintf(&cmd_buff[strlen(cmd_buff)], name_len, music_p->name);DEBUG("%s\n",cmd_buff);mciSendString(cmd_buff, NULL, 0, NULL);}/***********关闭设备**********/void close_music_Cmd(music_t* music_p){size_t name_len = 0;char cmd_buff[128] = "close ./mp3/";name_len = strlen(music_p->name) + 1;snprintf(&cmd_buff[strlen(cmd_buff)], name_len, music_p->name);DEBUG("%s\n", cmd_buff);mciSendString(cmd_buff, NULL, 0, NULL);}/***********开始播放**********/void play_music_Cmd(music_t *music_p){size_t name_len = 0;char cmd_buff[128] = "play ./mp3/";name_len = strlen(music_p->name)+1;snprintf(&cmd_buff[strlen(cmd_buff)], name_len, music_p->name);DEBUG("%s\n", cmd_buff);mciSendString(cmd_buff, NULL, 0, NULL);}/***********结束播放**********/void stop_music_Cmd(music_t* music_p){size_t name_len = 0;char cmd_buff[128] = "stop ./mp3/";name_len = strlen(music_p->name) + 1;snprintf(&cmd_buff[strlen(cmd_buff)], name_len, music_p->name);DEBUG("%s\n", cmd_buff);mciSendString(cmd_buff, NULL, 0, NULL);}/***********暂停播放**********/void pause_music_Cmd(music_t* music_p){size_t name_len = 0;char cmd_buff[128] = "pause ./mp3/";name_len = strlen(music_p->name)+1;snprintf(&cmd_buff[strlen(cmd_buff)], name_len, music_p->name);DEBUG("%s\n", cmd_buff);mciSendString(cmd_buff, NULL, 0, NULL);}/***********继续播放**********/void resume_music_Cmd(music_t* music_p){size_t name_len = 0;char cmd_buff[128] = "resume ./mp3/";name_len = strlen(music_p->name)+1;snprintf(&cmd_buff[strlen(cmd_buff)], name_len, music_p->name);DEBUG("%s\n", cmd_buff);mciSendString(cmd_buff, NULL, 0, NULL);}/************ 循环播放 ************/void repeat_music_Cmd(music_t* music_p){char cmd_buff[128] = "play ./mp3/";char repeat_buff[] = " repeat";char status_buff[64];snprintf(&cmd_buff[strlen(cmd_buff)], strlen(music_p->name) + 1, music_p->name);snprintf(&cmd_buff[strlen(cmd_buff)], strlen(repeat_buff) + 1, repeat_buff);DEBUG("cmd:%s\n", cmd_buff);mciSendString(cmd_buff, status_buff, 64, NULL);}/**********获取音乐长度 ************/void status_music_len_Cmd(music_t* music_p){char cmd_buff[128] = "status ./mp3/";char len_buff[] = " length";char status_buff[64];snprintf(&cmd_buff[strlen(cmd_buff)], strlen(music_p->name)+1, music_p->name);snprintf(&cmd_buff[strlen(cmd_buff)], strlen(len_buff) + 1, len_buff);DEBUG("status:%s\n", cmd_buff);mciSendString(cmd_buff, status_buff,64, NULL);music_p->music_len = atoi(status_buff);DEBUG("music_len:%d\n", music_p->music_len);}/**********获取音乐当前位置 ************/void status_music_position_Cmd(music_t* music_p){char cmd_buff[128] = "status ./mp3/";char addr_buff[] = " position";char status_buff[64];snprintf(&cmd_buff[strlen(cmd_buff)], strlen(music_p->name) + 1, music_p->name);snprintf(&cmd_buff[strlen(cmd_buff)], strlen(addr_buff) + 1, addr_buff);DEBUG("status:%s\n", cmd_buff);mciSendString(cmd_buff, status_buff, 64, NULL);music_p->cur_seek = atoi(status_buff);DEBUG("music_cur_addr:%d\n", music_p->cur_seek);}/********** 查询工作模式 *************/void status_music_mode_Cmd(music_t* music_p,char *sta_buff){char cmd_buff[128] = "status ./mp3/";char mode_buff[] = " mode";snprintf(&cmd_buff[strlen(cmd_buff)], strlen(music_p->name) + 1, music_p->name);snprintf(&cmd_buff[strlen(cmd_buff)], strlen(mode_buff) + 1, mode_buff);DEBUG("status:%s\n", cmd_buff);mciSendString(cmd_buff, sta_buff, 32, NULL);DEBUG("music_mode:%s\n", sta_buff);}/********** 移动音乐播放位置 ***********/void seek_music_Cmd(music_t* music_p,long int addr){size_t name_len = 0;char temp[10];char cmd_buff[128] = "seek./mp3/";char addr_buff[10] = " to ";long int postion = 0;status_music_position_Cmd(music_p);addr = music_p->cur_seek + addr;if (addr > music_p->music_len || addr name) + 1;snprintf(&cmd_buff[strlen(cmd_buff)], name_len, music_p->name);snprintf(&cmd_buff[strlen(cmd_buff)], strlen(addr_buff)+ 1, addr_buff);snprintf(&cmd_buff[strlen(cmd_buff)], strlen(temp)+ 1, temp);DEBUG("seek cmd:%s\n", cmd_buff);mciSendString(cmd_buff, NULL, 0, NULL);}/***********音乐音量 ************/void volume_music_Cmd(music_t* music_p,int vol){size_t name_len = 0;char cmd_buff[MAX_PATH] = "setaudio ./mp3/";char vol_buff[20] = " volume to ";char temp[6];_itoa_s(vol,temp,10);DEBUG("temp:%s\n", temp);snprintf(&vol_buff[strlen(vol_buff)],strlen(temp)+1,temp);DEBUG("temp1:%s\n", vol_buff);name_len = strlen(music_p->name);snprintf(&cmd_buff[strlen(cmd_buff)], name_len+1, music_p->name);snprintf(&cmd_buff[strlen(cmd_buff)], strlen(vol_buff) + 1, vol_buff);DEBUG("%s\n", cmd_buff);mciSendString(cmd_buff, NULL, 0, NULL);}/**********设置音量***********/void set_music_vol(home_t* home_p){music_t* music_p = NULL;if (home_p->music == NULL) {return;}music_p = (music_t*)home_p->music;while (1) {if (home_p->current_music_index == music_p->music_index) {volume_music_Cmd(music_p, home_p->music_vol);break;}if (music_p->next != NULL) {music_p = music_p->next;}else {break;}}}/*********** 移动音频播放位置**********/void set_seek_music(home_t* home_p,long int addr){music_t* music_p = NULL;if (home_p->music == NULL){return;}music_p = (music_t*)home_p->music;while (1) {if (home_p->current_music_index == music_p->music_index) {pause_music_Cmd(music_p);seek_music_Cmd(music_p,addr);if (home_p->is_repeat) {repeat_music_Cmd(music_p);}else {play_music_Cmd(music_p);}break;}if (music_p->next != NULL) {music_p = music_p->next;}else {break;}} }/************* 上一首 *************/void previous_music(home_t* home_p){music_t *music_p = NULL;if (home_p->music == NULL) {return;}if (home_p->current_music_index == 1) {return;}music_p = (music_t *)home_p->music;while (1) {if (home_p->current_music_index == music_p->music_index) {home_p->current_music_index = music_p->pre->music_index;close_music_Cmd(music_p);music_p = music_p->pre;open_music_Cmd(music_p);if (home_p->is_repeat == true) {repeat_music_Cmd(music_p);}else {play_music_Cmd(music_p);}if (music_p->music_len == 0) {status_music_len_Cmd(music_p);}set_music_vol(home_p);home_p->play_state = 1;load_play_pause_icon(home_p, "pause.png", PLAY_PAUSE_COORD_X, PLAY_PAUSE_COORD_Y);break;}if (music_p->next != NULL) {music_p = music_p->next;}else {break;}}}/************* 下一首 *************/void next_music(home_t* home_p){music_t* music_p = NULL;if (home_p->music == NULL) {return;}music_p = (music_t*)home_p->music;while (music_p->next != NULL) {if (home_p->current_music_index == music_p->music_index) {home_p->current_music_index = music_p->next->music_index;close_music_Cmd(music_p);music_p = music_p->next;open_music_Cmd(music_p);if (home_p->is_repeat == true) {repeat_music_Cmd(music_p);}else {play_music_Cmd(music_p);}if (music_p->music_len == 0) {status_music_len_Cmd(music_p);}set_music_vol(home_p);home_p->play_state = 1;load_play_pause_icon(home_p, "pause.png", PLAY_PAUSE_COORD_X, PLAY_PAUSE_COORD_Y);break;}music_p = music_p->next;}}/********** 播放暂停 **********/void play_pause_music(home_t* home_p){music_t* music_p = NULL;if (home_p->music == NULL) {return;}music_p = (music_t*)home_p->music;while (1) {if (home_p->current_music_index == music_p->music_index) {if (home_p->play_state == 1) {pause_music_Cmd(music_p);load_play_pause_icon(home_p, "play.png", PLAY_PAUSE_COORD_X, PLAY_PAUSE_COORD_Y);home_p->play_state = false;}else if (home_p->play_state == 2) {close_music_Cmd(music_p);open_music_Cmd(music_p);if (home_p->is_repeat) {repeat_music_Cmd(music_p);}else {play_music_Cmd(music_p);}load_play_pause_icon(home_p, "pause.png", PLAY_PAUSE_COORD_X, PLAY_PAUSE_COORD_Y);home_p->play_state = 1;}else if(home_p->play_state == 3) {resume_music_Cmd(music_p);if (music_p->music_len == 0) {status_music_len_Cmd(music_p);}load_play_pause_icon(home_p, "pause.png", PLAY_PAUSE_COORD_X, PLAY_PAUSE_COORD_Y);home_p->play_state = 1;}break;}if (music_p->next != NULL) {music_p = music_p->next;}else {break;}}}/************* 设置循环 *************/void set_repeat_music(home_t* home_p){music_t* music_p = NULL;if (home_p->music == NULL) {return;}music_p = (music_t*)home_p->music;while (1) {if (home_p->current_music_index == music_p->music_index) {if (home_p->is_repeat == true) {home_p->is_repeat = false;}else {home_p->is_repeat = true;//repeat_music_Cmd(music_p);}update_ui(home_p);break;}if (music_p->next != NULL) {music_p = music_p->next;}else {break;}}}/*********** 获取工作模式***********/void get_music_mode(home_t* home_p){char mode[32] = "";music_t* music_p = NULL;if (home_p->music == NULL) {return;}music_p = (music_t*)home_p->music;while (1) {if (home_p->current_music_index == music_p->music_index) {status_music_mode_Cmd(music_p,mode);if (strcmp(mode, "playing") == 0) {home_p->play_state = 1;}else if (strcmp(mode, "stopped") == 0) {if ((home_p->current_music_index != home_p->music_count)&&(home_p->is_repeat == false)&&(home_p->play_state != 0)) {next_music(home_p);home_p->play_state = 1;}else {home_p->play_state = 2;}}else if (strcmp(mode, "paused") == 0) {home_p->play_state = 3;}break;}if (music_p->next != NULL) {music_p = music_p->next;}else {break;}}}/************* 鼠标点击坐标处理*************/void coord_handle(home_t* home_p, int x,int y){int coord_x = x, coord_y = y;if ((coord_x > PLAY_PAUSE_COORD_X) && (coord_x  PLAY_PAUSE_COORD_Y) && (coord_y  PREVIOUS_COORD_X) && (coord_x  PREVIOUS_COORD_Y) && (coord_y  NEXT_COORD_X) && (coord_x  NEXT_COORD_Y) && (coord_y  PLAY_WAY_COORD_X) && (coord_x  PLAY_WAY_COORD_Y) && (coord_y  VOL_UP_COORD_X) && (coord_x  VOL_UP_COORD_Y) && (coord_y music_vol music_vol += 50;}set_music_vol(home_p);}else if ((coord_x > VOL_DOWN_COORD_X) && (coord_x  VOL_DOWN_COORD_Y) && (coord_y music_vol > 0) {home_p->music_vol -= 50;}set_music_vol(home_p);}else if ((coord_x > FAST_JIN_COORD_X) && (coord_x  FAST_JIN_COORD_Y) && (coord_y  FAST_TUI_COORD_X) && (coord_x  FAST_TUI_COORD_Y) && (coord_y  BK_ZUO_COORD_X) && (coord_x  BK_ZUO_COORD_Y) && (coord_y  BK_YOU_COORD_X) && (coord_x  BK_YOU_COORD_Y) && (coord_y home_img = NULL;home_p->music= NULL;home_p->bk = NULL;home_p->music_vol = 800;home_p->play_state= 0;home_p->is_repeat = false;home_p->music_count = 0;home_p->current_bk_index= 1;home_p->current_music_index = 1;}/********* 初始化所有文件目录 ***********/void init_all_dir(home_t* home_p){get_main_dir(home_p);get_mp3_dir(home_p, "mp3\\\\");get_bk_image_dir(home_p, "images\\\\bk\\\\");get_icon_image_dir(home_p, "images\\\\icon\\\\");}/********** 初始化所有文件 ***********/void init_all_file(home_t *home_p){get_all_mp3_file(home_p, "*.mp3");get_bk_image_file(home_p, "*.jpg");}/************ 初始化播放器窗口 **********/void init_music_play_window(home_t* home_p,int width,int high){initgraph(width, high);// 初始化图形模式setbkcolor(WHITE);load_img(home_p);load_all_icons(home_p);show_title();}/********* 初始化播放器设置 ***********/void init_music_settings(home_t* home_p){if (home_p->music == NULL) {return;}open_music_Cmd(home_p->music);pause_music_Cmd(home_p->music);set_music_vol(home_p); status_music_position_Cmd(home_p->music);}/********* 更新界面 *********/void update_ui(home_t* home_p){BeginBatchDraw();cleardevice();load_img(home_p);load_all_icons(home_p);show_title();show_song_name(home_p);show_music_time_schedule(home_p);EndBatchDraw();}/*********** UI事件 **********/void ui_event(home_t* home_p){Sleep(5);if (timer_per == 1) {get_music_mode(home_p);update_ui(home_p);timer_per = 0;}}/**********windows定时器回调函数 **********/void WINAPI TimerCallback(UINT uTimerID, UINT uMsg, DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2){if (timer_per == 0) {timer_per = 1;}}int main(){home_t home_win;home_t* home_win_p = &home_win;int timer_id = 0; //定时器句柄init_data(home_win_p);init_all_dir(home_win_p);init_all_file(home_win_p); init_music_settings(home_win_p);init_music_play_window(home_win_p,LCD_WIDTH,LCD_HEIGH);timer_id = timeSetEvent(500,0, (LPTIMECALLBACK)TimerCallback, NULL, TIME_PERIODIC); //开启500ms的周期定时器if (timer_id == NULL) {DEBUG("Timer set error!\n");}while (1){mouse_event_thread(home_win_p); //鼠标事件ui_event(home_win_p); //UI更新}return 0;}

5 总结

学习过程中，我们需要养成遇到问题，就想各种办法去寻找答案的习惯，然后吸取精华，而不是轻易放弃，如果真的无法解决，那就把问题放一放，改天再看或许会有更新奇的思路。

我平时开发的一些原代码都会无条件的分享出来，如果觉得写的还不错的，希望可以点个关注，哪怕只是一个点赞，Haha……