VC 用发音函数Beep()播放简谱音乐

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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：

BOOL WINAPI Beep(  __in          DWORD dwFreq,  __in          DWORD dwDuration);

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：

// 播放  生日快乐#include <windows.h>void main(void)  {      unsigned FREQUENCY[] = {392,392,440,392,523,494,                392,392,440,392,587,523,                392,392,784,659,523,494,440,                689,689,523,587,523};       unsigned DELAY[] = {375,125,500,500,500,1000,                375,125,500,500,500,1000,                375,125,500,500,500,500,1000,                375,125,500,500,500,1000};      int i;      for (i = 0; i < 25; i++)      {                Beep(FREQUENCY[i], DELAY[i]);      }  }   // 播放  小酒窝#include<iostream.h>#include<windows.h> enum fy{       d1 = 262,       d1_ = 277,       d2 = 294,       d2_ = 311,       d3 = 330,       d4 = 349,       d5 = 392,       d5_= 415,       d6 = 440,       d6_= 466,       d7 = 494,       z1 = 523,       z1_ = 554,       z2 = 578,       z2_ = 622,       z3 = 659,       z4 = 698,       z4_ = 740,       z5 = 784,       z5_ = 831,       z6 = 880,       z6_ = 932,       z7 = 988,       g1 = 1046,       g1_ = 1109,       g2 = 1175,       g2_ = 1245,       g3 = 1318,       g4 = 1397,       g4_ = 1480,       g5 = 1568,       g5_ = 1661,       g6 = 1760,       g6_ = 1865,       g7 = 1976,       yaya = 0}; struct yf{       enum fy s;       int t;}; int main(){       int n = 0;        struct yf a[1000]={{z3,125},{z3,50},{z4,100},{z3,50},{z2,50}, //5       {z2,125},{z2,50},{z5,100},{z2,50},{z1,50}, //10       {z1,125},{z1,50},{z6,100},{z5,100},    //14       {z3,125},{z4,25},{z3,25},{z2,100},{z2,100}, //19       {z3,125},{z3,50},{z4,100},{z5,50},{z3,50}, //24       {z5,125},{z5,50},{g2,100},{z7,50},{g1,50}, //29       {g1,200},{g1,50},{z7,50},{z6,50},{z7,50}, //34       {g1,125},{z7,50},{g1,200},      //37       {g1,50},{z7,50},{g1,50},{z7,50},{g1,100},{z3,50},{z5,50}, //44       {z5,250},{z6,50},{z7,50},      //47       {g1,50},{z7,50},{g1,50},{z7,50},{g1,100},{g2,100},{g3,100}, //54       {g3,300},{z6,50},{z7,50},   //57       {g1,50},{z7,50},{g1,50},{z7,50},{g1,100},{g3,100}, //63       {z7,50},{z6,50},{z7,50},{z6,50},{z7,50},{z5,50},{z5,50},{g1,50}, //71       {g1,200},{g3,75},{g4,25},{g4,50},{g3,50}, //76       {g2,200},{yaya,50},{z5,50},{g1,50},{g2,50}, //81       {g3,50},{g1,50},{g1,50},{z5,50},{z5,100},{z5,50},{g3,50}, //88       {g2,50},{g3,50},{g2,50},{g1,50},{z5,50},{z5,50},{z6,50},{z7,50}, //96       {g1,50},{z6,50},{z6,50},{z3,50},{z3,100},{yaya,50},{z7,50}, //103       {g1,50},{z7,50},{g1,50},{g2,50},{z6,50},{z5,50},{z5,100}, //110       {z6,100},{z5,50},{z6,50},{z7,100},{g3,50},{g4,50}, //116       {g3,50},{g4,50},{g3,50},{g2,50},{g2,50},{g1,100},{z5,50}, //123       {z5,50},{z4,50},{z4,50},{g1,50},{g1,50},{g3,50},{g3,50},{g1,50}, //131       {g2,200},{yaya,50},{z5,50},{g1,50},{g2,50}, //136       {g3,50},{g1,50},{g1,50},{z5,50},{z5,100},{z5,50},{g3,50}, //143       {g2,50},{g3,50},{g2,50},{g1,50},{z5,50},{z5,50},{z6,50},{z7,50}, //151       {g1,50},{z6,50},{z6,50},{z3,50},{z3,100},{z3,50},{z7,50}, //158       {g1,50},{z7,50},{g1,50},{g2,50},{z6,50},{z5,50},{z5,100}, //165       {z6,50},{z7,50},{g1,50},{g2,100},{g3,50},{g4,50}, //171       {g3,50},{g4,50},{g2,50},{g1,50},{g2,50},{g1,50},{g1,100}, //178       {g2,50},{g1,50},{g2,50},{z6,50},{g1,100},{g2,50},{g1,50}, //185       {g1,400},   //186       {g2,50},{g1,50},{g2,50},{z6,50},{z7,100},{z7,50},{g1,50}, //193       {g1,400},   //194       };        struct yf *atop;       atop = a;       n = 194;        while(n--)       {              Beep(atop->s,atop->t*5);              atop++;       }       return 0;}

http://www.cnblogs.com/morewindows/archive/2011/08/15/2139544.html

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