05/13/2020,09:28

開啟OPENGL，網路上下載WAV音檔，"放在Freeglut->bin"

可以同時放不只一個音檔，可以做出一段音樂喔!

加上鍵盤，彈奏一手鋼琴曲
#include <windows.h>
#include <mmsystem.h>
#include <GL/glut.h>
void display()
{


}
void keyboard(unsigned char key, int x,int y)
{
    if(key=='1')PlaySoundA("do.wav",NULL,SND_SYNC);
    if(key=='2')PlaySoundA("re.wav",NULL,SND_SYNC);
    if(key=='3')PlaySoundA("mi.wav",NULL,SND_SYNC);
    if(key=='4')PlaySoundA("fa.wav",NULL,SND_SYNC);
    if(key=='5')PlaySoundA("so.wav",NULL,SND_SYNC);
}
int main(int argc,char**argv)
{
    glutInit(&argc,argv);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("Week12 sound");

    glutDisplayFunc(display);
    glutKeyboardFunc(keyboard);

    glutMainLoop();
}


播放mp3。
#include <windows.h>
#include <mmsystem.h>
#include <GL/glut.h>
#include "CMP3_MCI.h"
CMP3_MCI mp3;
void display()
{


}
void keyboard(unsigned char key, int x,int y)
{
    if(key=='1')PlaySoundA("do.wav",NULL,SND_SYNC);
    if(key=='2')PlaySoundA("re.wav",NULL,SND_SYNC);
    if(key=='3')PlaySoundA("mi.wav",NULL,SND_SYNC);
    if(key=='4')PlaySoundA("fa.wav",NULL,SND_SYNC);
    if(key=='5')PlaySoundA("so.wav",NULL,SND_SYNC);
}
int main(int argc,char**argv)
{
    mp3.Load("Music.mp3");
    mp3.Play();
    glutInit(&argc,argv);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("Week12 sound");

    glutDisplayFunc(display);
    glutKeyboardFunc(keyboard);

    glutMainLoop();
}

最終版本:
#include <windows.h>
#include <mmsystem.h>
#include <GL/glut.h>
#include "CMP3_MCI.h" /// TODO3: 雙引號,在專案同一個目錄裡
CMP3_MCI mp3;///ex. int a; TODO3: 宣告一個物件變數,叫 mp3
CMP3_MCI Do, Re, Mi, Fa, So; ///TODO4: 有5個物件變數

float ballX=0, ballY=0, dx=0.05, dy=0.03;///ballX會加上dx, ballY會加上dy
void display()
{///想法: 可不可以做個小遊戲....有個球,會動來來動
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();///TODO6: 備份
        glTranslatef(ballX, ballY, 0);///TODO6: 移到ballX,ballY
        glutSolidSphere(0.1, 30,30);///TODO6:圓球
    glPopMatrix();///TODO6:還原
    glutSwapBuffers();
}
void timer(int t)///TODO6: timer
{
    glutTimerFunc(50, timer, t+1);///TODO6: 用timer
    ballX+=dx; ballY+=dy;///TODO6: 球會動
    if(ballX>=1){
        Do.Play(); dx= -dx;
    }
    if(ballX<=-1){
        Re.Play(); dx= -dx;
    }
    if(ballY>=1){
        Mi.Play(); dy= -dy;
    }
    if(ballY<=-1){
        Fa.Play(); dy= -dy;
    }
    glutPostRedisplay();///TODO6: 重畫畫面
}
void mouse(int button, int state, int x, int y)///TODO6: mouse會有槍聲
{
    if(state==GLUT_DOWN) PlaySoundA("shot.wav", NULL, SND_ASYNC);
}
void keyboard(unsigned char key, int x, int y)
{                                 //不要同步,不等結束,繼續
    if(key=='1') Do.Play();///TODO4 PlaySoundA("do.wav",NULL,SND_ASYNC);
    if(key=='2') Re.Play();///TODO4//PlaySoundA("re.wav",NULL,SND_ASYNC);
    if(key=='3') Mi.Play();///TODO4//PlaySoundA("mi.wav",NULL,SND_ASYNC);
    if(key=='4') Fa.Play();///TODO4//PlaySoundA("fa.wav",NULL,SND_ASYNC);
    if(key=='5') So.Play();///TODO4//PlaySoundA("so.wav",NULL,SND_ASYNC);
}///TODO4: 上面的程式, 現在可以有合弦 (ex. Do+Mi+So => 只會有個音出來...)
int main(int argc, char**argv)
{
    Do.Load("do.wav"); Re.Load("re.wav"); Mi.Load("mi.wav");
    Fa.Load("fa.wav"); So.Load("so.wav");///TODO4: 5個物件變數 設好檔案
    mp3.Load("music.mp3");///TODO3:
    ///mp3.Play();///TODO3:
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE |GLUT_DEPTH);
    glutCreateWindow("week12 sound");
    glutDisplayFunc(display);
    glutKeyboardFunc(keyboard);///TODO2:鍵盤有函式
    glutTimerFunc(50, timer, 0);///TODO6
    glutMouseFunc(mouse);///TODO6
    glutMainLoop();
}