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：

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：

生日快乐歌曲

// 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]);       }   } 

小酒窝

// 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;}