如何调用: // DSDemoDlg.cpp : implementation file //#include "stdafx.h" #include "DSDemo.h" #include "DSDemoDlg.h"#ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif///////////////////////////////////////////////////////////////////////////// // CAboutDlg dialog used for App Aboutclass CAboutDlg : public CDialog { public: CAboutDlg();// Dialog Data //{{AFX_DATA(CAboutDlg) enum { IDD = IDD_ABOUTBOX }; //}}AFX_DATA // ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CAboutDlg) protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support //}}AFX_VIRTUAL// Implementation protected: //{{AFX_MSG(CAboutDlg) //}}AFX_MSG DECLARE_MESSAGE_MAP() };CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) { //{{AFX_DATA_INIT(CAboutDlg) //}}AFX_DATA_INIT }void CAboutDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CAboutDlg) //}}AFX_DATA_MAP }BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) //{{AFX_MSG_MAP(CAboutDlg) // No message handlers //}}AFX_MSG_MAP END_MESSAGE_MAP()///////////////////////////////////////////////////////////////////////////// // CDSDemoDlg dialogCDSDemoDlg::CDSDemoDlg(CWnd* pParent /*=NULL*/) : CDialog(CDSDemoDlg::IDD, pParent) { //{{AFX_DATA_INIT(CDSDemoDlg) //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); }void CDSDemoDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CDSDemoDlg) DDX_Control(pDX, ID_EFFECTVOLUME, m_SliderEffectVolume); DDX_Control(pDX, ID_BKVOLUME, m_SliderBKVolume); //}}AFX_DATA_MAP }BEGIN_MESSAGE_MAP(CDSDemoDlg, CDialog) //{{AFX_MSG_MAP(CDSDemoDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_NOTIFY(NM_RELEASEDCAPTURE, ID_BKVOLUME, OnReleasedcaptureBkvolume) ON_NOTIFY(NM_RELEASEDCAPTURE, ID_EFFECTVOLUME, OnReleasedcaptureEffectvolume) ON_BN_CLICKED(IDC_EFFECT, OnEffect) ON_BN_CLICKED(IDC_PLAYBKMUSIC, OnPlaybkmusic) ON_WM_CLOSE() //}}AFX_MSG_MAP END_MESSAGE_MAP()///////////////////////////////////////////////////////////////////////////// // CDSDemoDlg message handlersBOOL CDSDemoDlg::OnInitDialog() { CDialog::OnInitDialog(); // Add "About..." menu item to system menu. // IDM_ABOUTBOX must be in the system command range. ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); ASSERT(IDM_ABOUTBOX < 0xF000); CMenu* pSysMenu = GetSystemMenu(FALSE); if (pSysMenu != NULL) { CString strAboutMenu; strAboutMenu.LoadString(IDS_ABOUTBOX); if (!strAboutMenu.IsEmpty()) { pSysMenu->AppendMenu(MF_SEPARATOR); pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); } } // Set the icon for this dialog. The framework does this automatically // when the application's main window is not a dialog SetIcon(m_hIcon, TRUE); // Set big icon SetIcon(m_hIcon, FALSE); // Set small icon
// TODO: Add extra initialization here //设置音量范围 m_SliderBKVolume.SetRange(0,100); m_SliderEffectVolume.SetRange(0,100); //初始时的音量均设成最大值 m_SliderBKVolume.SetPos(100); m_SliderEffectVolume.SetPos(100); //选中播放背景音乐复选框 ((CButton*)GetDlgItem(IDC_PLAYBKMUSIC))->SetCheck(1); //初始化DirectSound对象 if(!InitializeDirectSound(*AfxGetMainWnd())) { AfxMessageBox("初始化DirectSound失败!",MB_OK); CDialog::OnOK(); return TRUE ; } //创建声音缓冲区 m_lpBkGrdDSBuffer=new CDSBuffer("bk.wav",TRUE,m_lpDS); m_lpYinXiaoDSBuffer=new CDSBuffer("effect.wav",FALSE,m_lpDS); //播放背景音乐 m_lpBkGrdDSBuffer->PlaySound(); return TRUE; // return TRUE unless you set the focus to a control }void CDSDemoDlg::OnSysCommand(UINT nID, LPARAM lParam) { if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgAbout.DoModal(); } else { CDialog::OnSysCommand(nID, lParam); } }// If you add a minimize button to your dialog, you will need the code below // to draw the icon. For MFC applications using the document/view model, // this is automatically done for you by the framework.void CDSDemoDlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // device context for painting SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); // Center icon in client rectangle int cxIcon = GetSystemMetrics(SM_CXICON); int cyIcon = GetSystemMetrics(SM_CYICON); CRect rect; GetClientRect(&rect); int x = (rect.Width() - cxIcon + 1) / 2; int y = (rect.Height() - cyIcon + 1) / 2; // Draw the icon dc.DrawIcon(x, y, m_hIcon); } else { CDialog::OnPaint(); } }// The system calls this to obtain the cursor to display while the user drags // the minimized window. HCURSOR CDSDemoDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; }BOOL CDSDemoDlg::InitializeDirectSound(HWND hWnd) { // 创建背景音乐和音效DirectSound对象 if (DS_OK != DirectSoundCreate(NULL, &m_lpDS, NULL)) { ::MessageBox(NULL,"创建DirectSound对象失败\n找不到可利用的声音设备",NULL,MB_OK); return FALSE; } // 设置协作级别 if (DS_OK != m_lpDS->SetCooperativeLevel(hWnd, DSSCL_NORMAL)) { ::MessageBox(NULL,"设置协作级别失败",NULL,MB_OK); return FALSE; } return TRUE; }void CDSDemoDlg::ClearDSBuffer() { m_lpBkGrdDSBuffer->StopSound(); m_lpYinXiaoDSBuffer->StopSound(); if (m_lpBkGrdDSBuffer) delete m_lpBkGrdDSBuffer; if (m_lpYinXiaoDSBuffer) delete m_lpYinXiaoDSBuffer; }void CDSDemoDlg::OnReleasedcaptureBkvolume(NMHDR* pNMHDR, LRESULT* pResult) { int nPos = m_SliderBKVolume.GetPos(); m_lpBkGrdDSBuffer->SetVolume(nPos);
先给类,看看:
// DSBuffer.h : Definition of CDSBuffer class
//#if !defined(AFX_DSBUFFER_H__7517D749_96E3_11D2_BBF3_9EB4940D843C__INCLUDED_)
#define AFX_DSBUFFER_H__7517D749_96E3_11D2_BBF3_9EB4940D843C__INCLUDED_#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000#include <mmsystem.h>
#include <dsound.h>//设置如下两个全局变量控制音量:
extern int m_nBkGrdVolume; //用于控制背景音乐音量大小
extern int m_nYinXiaoVolume; //用于控制音效音量大小//wav文件头格式
struct WaveHeader
{
BYTE RIFF[4]; // "RIFF"
DWORD dwSize; // Size of data to follow
BYTE WAVE[4]; // "WAVE"
BYTE fmt_[4]; // "fmt "
DWORD dw16; // 16
WORD wOne_0; // 1
WORD wChnls; // Number of Channels
DWORD dwSRate; // Sample Rate
DWORD BytesPerSec; // Sample Rate
WORD wBlkAlign; // 1
WORD BitsPerSample; // Sample size
BYTE DATA[4]; // "DATA"
DWORD dwDSize; // Number of Samples
};class CDSBuffer : public CObject
{
// Attribute
protected:
LPDIRECTSOUNDBUFFER m_lpDSBuffer; // 声音缓冲区对象public:
CDSBuffer();
CDSBuffer(const char* FileName,BOOL m_bBackGroundMusic,LPDIRECTSOUND lpDS,DWORD dwFlags = DSBCAPS_CTRLVOLUME );
~CDSBuffer();public:
BOOL PlaySound(BOOL bContinue=FALSE); //播放声音
BOOL StopSound(); //停止播放
BOOL CreateSoundBuffer(LPDIRECTSOUND lpDS, DWORD dwFlags, DWORD dwBufSize, DWORD dwFreq, DWORD dwBitsPerSample, DWORD dwBlkAlign, BOOL bStereo);
BOOL ReadData(FILE* pFile, DWORD dwSize, DWORD dwPos);
BOOL IsValid();
LPDIRECTSOUNDBUFFER GetBuffer() { return m_lpDSBuffer;}
void SetVolume(int percent=50); //设置音量
void VolumeDown(int percent=10); //音量增大(percent为百分数,范围为
void VolumeUp(int percent=10); //音量减小 1~100)
private:
BOOL m_bBkGrdMusic; //是否是背景音乐,TRUE为是
};
#endif // !defined(AFX_DSBUFFER_H__7517D749_96E3_11D2_BBF3_9EB4940D843C__INCLUDED_)
///////////////////////////////////////////////////////////////////////////
// DSBuffer.cpp : Implementation of CDSBuffer class
//
#include "DSBuffer.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif//设置如下两个全局变量控制音量:
//用于控制背景音乐音量大小
int m_nBkGrdVolume = DSBVOLUME_MAX;
//用于控制音效音量大小
int m_nYinXiaoVolume= DSBVOLUME_MAX-DSBVOLUME_MIN ; /////////////////////////////////////////////////////////////////////////////
// CDSBufferCDSBuffer::CDSBuffer()
{
// 复位声音缓冲区
m_lpDSBuffer = NULL;
}CDSBuffer::CDSBuffer(const char *FileName,BOOL m_bBackGroundMusic,LPDIRECTSOUND lpDS, DWORD dwFlags)
{
//判断是否用于背景音乐
//若m_bBackGroundMusic为TRUE,则该音乐用于背景音乐
//若m_bBackGroundMusic为FALSE,则该音乐用于音效
m_bBkGrdMusic=m_bBackGroundMusic; // 复位声音缓冲区
m_lpDSBuffer = NULL; // 打开wave文件
FILE* pFile = fopen(FileName, "rb");
if(!pFile)
return; // 把相关信息读入Wave header
WaveHeader wavHdr;
if (fread(&wavHdr, sizeof(wavHdr), 1, pFile) != 1)
{
fclose(pFile);
return;
} // 所需的数据区的大小
DWORD dwSize = wavHdr.dwDSize; // 是否是一个立体声声音文件?
BOOL bStereo = wavHdr.wChnls > 1 ? true : false; // 为这个wave文件创建声音缓冲区
if(CreateSoundBuffer(lpDS, dwFlags, dwSize, wavHdr.dwSRate, wavHdr.BitsPerSample, wavHdr.wBlkAlign, bStereo))
{
// 从wave文件中读入声音数据
if (!ReadData(pFile, dwSize, sizeof(wavHdr)))
MessageBox(NULL,"读入声音数据出错",NULL,MB_OK);
} fclose(pFile);
}
CDSBuffer::~CDSBuffer()
{
StopSound();
if(m_lpDSBuffer)
{
m_lpDSBuffer->Release();
}
}
BOOL CDSBuffer::CreateSoundBuffer(LPDIRECTSOUND lpDS, DWORD dwFlags, DWORD dwBufSize, DWORD dwFreq, DWORD dwBitsPerSample, DWORD dwBlkAlign, BOOL bStereo)
{
PCMWAVEFORMAT pcmwf;
DSBUFFERDESC dsbdesc; // 设置wave format结构.
memset( &pcmwf, 0, sizeof(PCMWAVEFORMAT) );
pcmwf.wf.wFormatTag = WAVE_FORMAT_PCM;
pcmwf.wf.nChannels = bStereo ? 2 : 1;
pcmwf.wf.nSamplesPerSec = dwFreq;
pcmwf.wf.nBlockAlign = (WORD)dwBlkAlign;
pcmwf.wf.nAvgBytesPerSec = pcmwf.wf.nSamplesPerSec * pcmwf.wf.nBlockAlign;
pcmwf.wBitsPerSample = (WORD)dwBitsPerSample; // 设置DSBUFFERDESC结构
memset(&dsbdesc, 0, sizeof(DSBUFFERDESC)); // Zero it out.
dsbdesc.dwSize = sizeof(DSBUFFERDESC);
dsbdesc.dwFlags = dwFlags;
dsbdesc.dwBufferBytes = dwBufSize;
dsbdesc.lpwfxFormat = (LPWAVEFORMATEX)&pcmwf; if (DS_OK != lpDS->CreateSoundBuffer(&dsbdesc, &m_lpDSBuffer, NULL))
{
MessageBox(NULL,"创建声音缓冲区失败",NULL,MB_OK);
return FALSE;
} return TRUE;
}
BOOL CDSBuffer::ReadData(FILE* pFile, DWORD dwSize, DWORD dwPos)
{
// 定位到文件中的正确位置
if (dwPos != 0xffffffff)
{
if (fseek(pFile, dwPos, SEEK_SET) != 0)
{
return FALSE;
}
} // 锁定缓冲区数据
LPVOID pData1;
DWORD dwData1Size;
LPVOID pData2;
DWORD dwData2Size;
HRESULT rval; rval = m_lpDSBuffer->Lock(0, dwSize, &pData1, &dwData1Size, &pData2, &dwData2Size, DSBLOCK_FROMWRITECURSOR);
if (rval != DS_OK)
{
return FALSE;
} // 读取数据
if (dwData1Size > 0)
{
if (fread(pData1, dwData1Size, 1, pFile) != 1)
{
return FALSE;
}
} if (dwData2Size > 0)
{
if (fread(pData2, dwData2Size, 1, pFile) != 1)
{
return FALSE;
}
} // 解除锁定
rval = m_lpDSBuffer->Unlock(pData1, dwData1Size, pData2, dwData2Size);
if (rval != DS_OK)
{
return FALSE;
} return TRUE;
}//入口参数:bContinue,控制调用StopSound后是否接着原来的播放点播放
// bContinue为TRUE时接着原来点播放,为FALSE时从头播放
// 默认bContinue为FALSE
BOOL CDSBuffer::PlaySound(BOOL bContinue)
{
if(m_lpDSBuffer) // 确认声音缓冲区有效
{
DWORD dwStatus;
if (DS_OK != m_lpDSBuffer->GetStatus(&dwStatus))
{
MessageBox(NULL,"获取DirectSound缓冲区状态失败!",NULL,MB_OK);
return FALSE;
} if((dwStatus & DSBSTATUS_PLAYING) != DSBSTATUS_PLAYING)
{
if (m_bBkGrdMusic) //是背景音乐则循环播放
{
//设置播放位置
if (!bContinue)
m_lpDSBuffer->SetCurrentPosition(0); if (DS_OK != m_lpDSBuffer->Play(0, 0, DSBPLAY_LOOPING)) // Play the sound
{
return FALSE;
}
}
else //是音效则播放一次停止
{
//设置播放位置
if (!bContinue)
m_lpDSBuffer->SetCurrentPosition(0); if (DS_OK != m_lpDSBuffer->Play(0, 0, 0)) // Play the sound
{
MessageBox(NULL,"不能播放声音缓冲区对象",NULL,MB_OK);
return FALSE;
}
}
}
} return TRUE;
}BOOL CDSBuffer::StopSound()
{
if(m_lpDSBuffer) // 确认声音缓冲区有效
{
DWORD dwStatus;
if (DS_OK != m_lpDSBuffer->GetStatus(&dwStatus))
{
return FALSE;
} if ((dwStatus & DSBSTATUS_PLAYING) == DSBSTATUS_PLAYING)
{
if (DS_OK != m_lpDSBuffer->Stop()) // Stop the sound
{
return FALSE;
} }
}
return TRUE;
}
BOOL CDSBuffer::IsValid()
{
if (m_lpDSBuffer)
return TRUE;
else
return FALSE;
}//------------音量控制部分---------------
//SetVolume:设置音量
//入口参数为百分数(0~100)
void CDSBuffer::SetVolume(int percent)
{
int nVolume;
if (percent<=0)
nVolume=DSBVOLUME_MIN;
else if (percent>=100)
nVolume=DSBVOLUME_MAX;
else
nVolume=DSBVOLUME_MIN+(DSBVOLUME_MAX-DSBVOLUME_MIN)*percent/100;
GetBuffer()->SetVolume(nVolume);
}//以下两个函数用于控制音量大小
//入口参数为百分数(0~100)
void CDSBuffer::VolumeDown(int percent)
{
if (percent<=0 )
percent=1;
if (percent>=100)
percent=100;
if(m_bBkGrdMusic) //如果是背景音乐,则设置背景音乐音量
{
if (m_nBkGrdVolume<=DSBVOLUME_MIN)
{
m_nBkGrdVolume=DSBVOLUME_MIN;
GetBuffer()->SetVolume(m_nBkGrdVolume);
return;
}
m_nBkGrdVolume-=(DSBVOLUME_MAX-DSBVOLUME_MIN)/percent;
if (m_nBkGrdVolume<=DSBVOLUME_MIN)
m_nBkGrdVolume=DSBVOLUME_MIN;
GetBuffer()->SetVolume(m_nBkGrdVolume);
}
else //是音效,则设置音效音量
{
if (m_nYinXiaoVolume<=DSBVOLUME_MIN)
{
m_nYinXiaoVolume=DSBVOLUME_MIN;
GetBuffer()->SetVolume(m_nYinXiaoVolume);
return;
}
m_nYinXiaoVolume-=(DSBVOLUME_MAX-DSBVOLUME_MIN)/percent;
if (m_nYinXiaoVolume<=DSBVOLUME_MIN)
m_nYinXiaoVolume=DSBVOLUME_MIN;
GetBuffer()->SetVolume(m_nYinXiaoVolume);
}}void CDSBuffer::VolumeUp(int percent)
{
if (percent<=0 )
percent=1;
if (percent>=100)
percent=100;
if (m_bBkGrdMusic) //如果是背景音乐,则设置背景音乐音量
{
if (m_nBkGrdVolume>=DSBVOLUME_MAX)
{
m_nBkGrdVolume=DSBVOLUME_MAX;
GetBuffer()->SetVolume(m_nBkGrdVolume);
return;
}
m_nBkGrdVolume+=(DSBVOLUME_MAX-DSBVOLUME_MIN)/10;
if (m_nBkGrdVolume>=DSBVOLUME_MAX)
m_nBkGrdVolume=DSBVOLUME_MAX;
GetBuffer()->SetVolume(m_nBkGrdVolume);
}
else //是音效,则设置音效音量
{
if (m_nYinXiaoVolume>=DSBVOLUME_MAX)
{
m_nYinXiaoVolume=DSBVOLUME_MAX;
GetBuffer()->SetVolume(m_nYinXiaoVolume);
return;
}
m_nYinXiaoVolume+=(DSBVOLUME_MAX-DSBVOLUME_MIN)/10;
if (m_nYinXiaoVolume>=DSBVOLUME_MAX)
m_nYinXiaoVolume=DSBVOLUME_MAX;
GetBuffer()->SetVolume(m_nYinXiaoVolume);
}
}
// DSDemoDlg.cpp : implementation file
//#include "stdafx.h"
#include "DSDemo.h"
#include "DSDemoDlg.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App Aboutclass CAboutDlg : public CDialog
{
public:
CAboutDlg();// Dialog Data
//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
//}}AFX_DATA // ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CAboutDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL// Implementation
protected:
//{{AFX_MSG(CAboutDlg)
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
//{{AFX_DATA_INIT(CAboutDlg)
//}}AFX_DATA_INIT
}void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAboutDlg)
//}}AFX_DATA_MAP
}BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// CDSDemoDlg dialogCDSDemoDlg::CDSDemoDlg(CWnd* pParent /*=NULL*/)
: CDialog(CDSDemoDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CDSDemoDlg)
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}void CDSDemoDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CDSDemoDlg)
DDX_Control(pDX, ID_EFFECTVOLUME, m_SliderEffectVolume);
DDX_Control(pDX, ID_BKVOLUME, m_SliderBKVolume);
//}}AFX_DATA_MAP
}BEGIN_MESSAGE_MAP(CDSDemoDlg, CDialog)
//{{AFX_MSG_MAP(CDSDemoDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_NOTIFY(NM_RELEASEDCAPTURE, ID_BKVOLUME, OnReleasedcaptureBkvolume)
ON_NOTIFY(NM_RELEASEDCAPTURE, ID_EFFECTVOLUME, OnReleasedcaptureEffectvolume)
ON_BN_CLICKED(IDC_EFFECT, OnEffect)
ON_BN_CLICKED(IDC_PLAYBKMUSIC, OnPlaybkmusic)
ON_WM_CLOSE()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// CDSDemoDlg message handlersBOOL CDSDemoDlg::OnInitDialog()
{
CDialog::OnInitDialog(); // Add "About..." menu item to system menu. // IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000); CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
} // Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
// TODO: Add extra initialization here
//设置音量范围
m_SliderBKVolume.SetRange(0,100);
m_SliderEffectVolume.SetRange(0,100);
//初始时的音量均设成最大值
m_SliderBKVolume.SetPos(100);
m_SliderEffectVolume.SetPos(100);
//选中播放背景音乐复选框
((CButton*)GetDlgItem(IDC_PLAYBKMUSIC))->SetCheck(1); //初始化DirectSound对象
if(!InitializeDirectSound(*AfxGetMainWnd()))
{
AfxMessageBox("初始化DirectSound失败!",MB_OK);
CDialog::OnOK();
return TRUE ;
}
//创建声音缓冲区
m_lpBkGrdDSBuffer=new CDSBuffer("bk.wav",TRUE,m_lpDS);
m_lpYinXiaoDSBuffer=new CDSBuffer("effect.wav",FALSE,m_lpDS);
//播放背景音乐
m_lpBkGrdDSBuffer->PlaySound(); return TRUE; // return TRUE unless you set the focus to a control
}void CDSDemoDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.void CDSDemoDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); // Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2; // Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}// The system calls this to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CDSDemoDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}BOOL CDSDemoDlg::InitializeDirectSound(HWND hWnd)
{
// 创建背景音乐和音效DirectSound对象
if (DS_OK != DirectSoundCreate(NULL, &m_lpDS, NULL))
{
::MessageBox(NULL,"创建DirectSound对象失败\n找不到可利用的声音设备",NULL,MB_OK);
return FALSE;
} // 设置协作级别
if (DS_OK != m_lpDS->SetCooperativeLevel(hWnd, DSSCL_NORMAL))
{
::MessageBox(NULL,"设置协作级别失败",NULL,MB_OK);
return FALSE;
} return TRUE;
}void CDSDemoDlg::ClearDSBuffer()
{
m_lpBkGrdDSBuffer->StopSound();
m_lpYinXiaoDSBuffer->StopSound();
if (m_lpBkGrdDSBuffer)
delete m_lpBkGrdDSBuffer;
if (m_lpYinXiaoDSBuffer)
delete m_lpYinXiaoDSBuffer;
}void CDSDemoDlg::OnReleasedcaptureBkvolume(NMHDR* pNMHDR, LRESULT* pResult)
{
int nPos = m_SliderBKVolume.GetPos();
m_lpBkGrdDSBuffer->SetVolume(nPos);
*pResult = 0;
}void CDSDemoDlg::OnReleasedcaptureEffectvolume(NMHDR* pNMHDR, LRESULT* pResult)
{
int nPos = m_SliderEffectVolume.GetPos();
m_lpYinXiaoDSBuffer->SetVolume(nPos); *pResult = 0;
}void CDSDemoDlg::OnEffect()
{
m_lpYinXiaoDSBuffer->PlaySound();
}void CDSDemoDlg::OnPlaybkmusic()
{
CButton* pButton = (CButton*)GetDlgItem(IDC_PLAYBKMUSIC);
BOOL bFlag = (pButton->GetCheck() == 1);
if (bFlag) m_lpBkGrdDSBuffer->PlaySound();
else m_lpBkGrdDSBuffer->StopSound();
}
void CDSDemoDlg::OnClose()
{
// 删除声音缓冲区对象
ClearDSBuffer();
CDialog::OnClose();
}
//////////////////////////////////////////////////////////////我偷来的
不知道从Buffer中读取wave数据数据混音效果如何?