C语言实现音乐播放器的示例代码

//
// 编译该范例前，请把 music.mp3 放在项目文件夹中
// 把 music.mp3 和编译的 exe 放在一起
// 编译环境：VC6~VC2019 + EasyX_20210115
//
#include <graphics.h>
#include <coNIO.h>
#include<string.h>
// 引用 windows Multimedia api
#pragma comment(lib, "Winmm.lib")
 
void ZT();       // 暂停
void BF1();      // 播放1
void BF2();      // 播放2
void BF3();      // 播放3
void menu();    // 总得
void locate(int a, int b, int c, int d, int e, LPCTSTR text);
void locate(int a, int b, int c, int d, int e, LPCTSTR text, COLORREF color);
int Return();
 
int main()
{
  initgraph(640, 480);
 
  while (1)
  {
    int A=Return();    // 鼠标选择;
    switch (A)
    {
    case 0:ZT();break;
    case 1:BF1();break;
    case 2:BF2();break;
    case 3:BF3();break;
    }
  }
  closegraph();
  return 0;
}
 
void ZT()      // 暂停
{
  mciSendString(_T("stop mymusic"), NULL, 0, NULL);
  mciSendString(_T("close mymusic"), NULL, 0, NULL);
}
void BF1()      // 播放1
{
  mciSendString(_T("open 1.mp3 alias mymusic"), NULL, 0, NULL);
  // 播放音乐
  mciSendString(_T("play mymusic"), NULL, 0, NULL);
}
void BF2()      // 播放2
{
  mciSendString(_T("open 2.mp3 alias mymusic"), NULL, 0, NULL);
  // 播放音乐
  mciSendString(_T("play mymusic"), NULL, 0, NULL);
}
void BF3()      // 播放3
{
  mciSendString(_T("open 1.mp3 alias mymusic"), NULL, 0, NULL);
  // 播放音乐
  mciSendString(_T("play mymusic"), NULL, 0, NULL);
}
 
int Return()
{
  menu();
  MOUSEMSG m1;
  //BeginBatchDraw();
  while (1)
  {
    m1 = GetMouseMsg();
    switch (m1.uMsg)
    {
    case WM_MOUSEMOVE:
      menu();
      if (m1.x >= 220 && m1.x <= 420 && m1.y >= 100 && m1.y <= 130)
      {
        menu();
        locate(220, 100, 420, 130, 30, _T("暂停/结束"), RED);
        break;
      }
 
      if (m1.x >= 220 && m1.x <= 420 && m1.y >= 130 && m1.y <= 160)
      {
        menu();
        locate(220, 130, 420, 160, 30, _T("播放音乐1"), RED);
        break;
      }
 
      if (m1.x >= 220 && m1.x <= 420 && m1.y >= 160 && m1.y <= 190)
      {
        menu();
        locate(220, 160, 420, 190, 30, _T("播放音乐2"), RED);
      }
      if (m1.x >= 220 && m1.x <= 420 && m1.y >= 190 && m1.y <= 220)
      {
        menu();
        locate(220, 190, 420, 220, 30, _T("播放音乐3"), RED);
      }
      
    }
 
    if (m1.x >= 220 && m1.x <= 420 && m1.y >= 100 && m1.y <= 130)
    {
      locate(220, 100, 420, 130, 30, _T("暂停/结束"), RED);
      if (m1.uMsg == WM_LBUTTONDOWN)
      {
        return 0;
      }
    }
 
    if (m1.x >= 220 && m1.x <= 420 && m1.y >= 130 && m1.y <= 160)
    {
      if (m1.uMsg == WM_LBUTTONDOWN)
      {
        return 1;      // 
      }
    }
    if (m1.x >= 220 && m1.x <= 420 && m1.y >= 160 && m1.y <= 190)
    {
      if (m1.uMsg == WM_LBUTTONDOWN)
      {
        return 2;
      }
    }
    if (m1.x >= 220 && m1.x <= 420 && m1.y >= 190 && m1.y <= 220)
    {
      if (m1.uMsg == WM_LBUTTONDOWN)
      {
        return 3;
      }
    }
  }
 
}
 
void locate(int a, int b, int c, int d, int e, LPCTSTR text, COLORREF color)
{
  HCURSOR hcur = LoadCursor(NULL, IDC_CROSS);      // 加载系统预置的鼠标样式
  HWND hwnd = GetHWnd();                // 获取绘图窗口句柄
  SetClassLongPtr(hwnd, GCLP_HCURSOR, (long)hcur);  // 设置窗口类的鼠标样式
  setlinecolor(color);
  roundrect(a, b, c, d, e, e);
  settextcolor(color);
  settextstyle(20, 0, _T("黑体"));
  setbkmode(TRANSPARENT);
  char arr[50] = "按钮";
  RECT r = { a, b, c, d };
  drawtext(text, &r, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
}
 
void locate(int a, int b, int c, int d, int e, LPCTSTR text)
{
  setlinecolor(WHITE);
  roundrect(a, b, c, d, e, e);
  settextcolor(YELLOW);
  settextstyle(20, 0, _T("黑体"));
  setbkmode(TRANSPARENT);
  char arr[50] = "按钮";
  RECT r = { a, b, c, d };
  drawtext(text, &r, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
}
void menu()
{
  HCURSOR hcur = LoadCursor(NULL, IDC_ARROW);      // 加载系统预置的鼠标样式
  HWND hwnd = GetHWnd();                // 获取绘图窗口句柄
  SetClassLongPtr(hwnd, GCLP_HCURSOR, (long)hcur);  // 设置窗口类的鼠标样式
  locate(220, 100, 420, 130, 30, _T("暂停/结束"));
  locate(220, 130, 420, 160, 30, _T("播放音乐1"));
  locate(220, 160, 420, 190, 30, _T("播放音乐2"));
  locate(220, 190, 420, 220, 30, _T("播放音乐3"));
}