VC 用发音函数Beep()播放简谱音乐

Win32 API中有个非常有意思的发音函数Beep()，可以用它在扬声器上播放简单的音调，如果按简谱来设置播放的内容，就可以播放一些简单的音乐了。

函数原型：

[cpp] view plain copy

1. BOOL WINAPI Beep(  
2.   __in          DWORD dwFreq,  
3.   __in          DWORD dwDuration  
4. );  

函数说明：

第一个参数表示频率，用Hz为单位，可以在0x25到0x7FFF之间。

第二个参数表示持续的时间，以毫秒为单位。

 

与这个函数类似的是：

BOOL WINAPI MessageBeep(

  __in          UINT uType

);

这个函数使用要广泛的多。相当多的程序在MessageBox()之前都会调用MessageBeep()来发出一些提示音（实际上是播放系统音乐文件）。

可供选择的参数有：

MB_ICONASTERISK
0x00000040L

   SystemAsterisk

MB_ICONEXCLAMATION
0x00000030L

   SystemExclamation

MB_ICONHAND
0x00000010L

   SystemHand 警告音

MB_ICONQUESTION
0x00000020L

   SystemQuestion

MB_OK
0x00000000L

   SystemDefault

 

 

 

再附上本人收藏的几个用Beep()播放音乐的程序，虽然音质无法与音频文件媲美，但做个小小的娱乐还是可以的：

[cpp] view plain copy

1. // 播放  生日快乐  
2. #include <windows.h>  
3. void main(void)    
4. {    
5.     unsigned FREQUENCY[] = {392,392,440,392,523,494,    
6.               392,392,440,392,587,523,    
7.               392,392,784,659,523,494,440,    
8.               689,689,523,587,523};    
9.    
10.     unsigned DELAY[] = {375,125,500,500,500,1000,    
11.               375,125,500,500,500,1000,    
12.               375,125,500,500,500,500,1000,    
13.               375,125,500,500,500,1000};    
14.     int i;    
15.     for (i = 0; i < 25; i++)    
16.     {    
17.               Beep(FREQUENCY[i], DELAY[i]);    
18.     }    
19. }   
20.    
21.    
22. // 播放  小酒窝  
23. #include<iostream.h>  
24. #include<windows.h>  
25.    
26. enum fy{  
27.        d1 = 262,  
28.        d1_ = 277,  
29.        d2 = 294,  
30.        d2_ = 311,  
31.        d3 = 330,  
32.        d4 = 349,  
33.        d5 = 392,  
34.        d5_= 415,  
35.        d6 = 440,  
36.        d6_= 466,  
37.        d7 = 494,  
38.        z1 = 523,  
39.        z1_ = 554,  
40.        z2 = 578,  
41.        z2_ = 622,  
42.        z3 = 659,  
43.        z4 = 698,  
44.        z4_ = 740,  
45.        z5 = 784,  
46.        z5_ = 831,  
47.        z6 = 880,  
48.        z6_ = 932,  
49.        z7 = 988,  
50.        g1 = 1046,  
51.        g1_ = 1109,  
52.        g2 = 1175,  
53.        g2_ = 1245,  
54.        g3 = 1318,  
55.        g4 = 1397,  
56.        g4_ = 1480,  
57.        g5 = 1568,  
58.        g5_ = 1661,  
59.        g6 = 1760,  
60.        g6_ = 1865,  
61.        g7 = 1976,  
62.        yaya = 0  
63. };  
64.    
65. struct yf  
66. {  
67.        enum fy s;  
68.        int t;  
69. };  
70.    
71. int main()  
72. {  
73.        int n = 0;  
74.    
75.        struct yf a[1000]={{z3,125},{z3,50},{z4,100},{z3,50},{z2,50}, //5  
76.        {z2,125},{z2,50},{z5,100},{z2,50},{z1,50}, //10  
77.        {z1,125},{z1,50},{z6,100},{z5,100},    //14  
78.        {z3,125},{z4,25},{z3,25},{z2,100},{z2,100}, //19  
79.        {z3,125},{z3,50},{z4,100},{z5,50},{z3,50}, //24  
80.        {z5,125},{z5,50},{g2,100},{z7,50},{g1,50}, //29  
81.        {g1,200},{g1,50},{z7,50},{z6,50},{z7,50}, //34  
82.        {g1,125},{z7,50},{g1,200},      //37  
83.        {g1,50},{z7,50},{g1,50},{z7,50},{g1,100},{z3,50},{z5,50}, //44  
84.        {z5,250},{z6,50},{z7,50},      //47  
85.        {g1,50},{z7,50},{g1,50},{z7,50},{g1,100},{g2,100},{g3,100}, //54  
86.        {g3,300},{z6,50},{z7,50},   //57  
87.        {g1,50},{z7,50},{g1,50},{z7,50},{g1,100},{g3,100}, //63  
88.        {z7,50},{z6,50},{z7,50},{z6,50},{z7,50},{z5,50},{z5,50},{g1,50}, //71  
89.        {g1,200},{g3,75},{g4,25},{g4,50},{g3,50}, //76  
90.        {g2,200},{yaya,50},{z5,50},{g1,50},{g2,50}, //81  
91.        {g3,50},{g1,50},{g1,50},{z5,50},{z5,100},{z5,50},{g3,50}, //88  
92.        {g2,50},{g3,50},{g2,50},{g1,50},{z5,50},{z5,50},{z6,50},{z7,50}, //96  
93.        {g1,50},{z6,50},{z6,50},{z3,50},{z3,100},{yaya,50},{z7,50}, //103  
94.        {g1,50},{z7,50},{g1,50},{g2,50},{z6,50},{z5,50},{z5,100}, //110  
95.        {z6,100},{z5,50},{z6,50},{z7,100},{g3,50},{g4,50}, //116  
96.        {g3,50},{g4,50},{g3,50},{g2,50},{g2,50},{g1,100},{z5,50}, //123  
97.        {z5,50},{z4,50},{z4,50},{g1,50},{g1,50},{g3,50},{g3,50},{g1,50}, //131  
98.        {g2,200},{yaya,50},{z5,50},{g1,50},{g2,50}, //136  
99.        {g3,50},{g1,50},{g1,50},{z5,50},{z5,100},{z5,50},{g3,50}, //143  
100.        {g2,50},{g3,50},{g2,50},{g1,50},{z5,50},{z5,50},{z6,50},{z7,50}, //151  
101.        {g1,50},{z6,50},{z6,50},{z3,50},{z3,100},{z3,50},{z7,50}, //158  
102.        {g1,50},{z7,50},{g1,50},{g2,50},{z6,50},{z5,50},{z5,100}, //165  
103.        {z6,50},{z7,50},{g1,50},{g2,100},{g3,50},{g4,50}, //171  
104.        {g3,50},{g4,50},{g2,50},{g1,50},{g2,50},{g1,50},{g1,100}, //178  
105.        {g2,50},{g1,50},{g2,50},{z6,50},{g1,100},{g2,50},{g1,50}, //185  
106.        {g1,400},   //186  
107.        {g2,50},{g1,50},{g2,50},{z6,50},{z7,100},{z7,50},{g1,50}, //193  
108.        {g1,400},   //194  
109.        };  
110.    
111.        struct yf *atop;  
112.        atop = a;  
113.        n = 194;  
114.    
115.        while(n--)  
116.        {  
117.               Beep(atop->s,atop->t*5);  
118.               atop++;  
119.        }  
120.        return 0;  
121. }