wavplaydlg.cpp

来自「《Visual C++视频技术方案宝典》配套光盘」· C++ 代码 · 共 208 行

// WAVPlayDlg.cpp : implementation file
//

#include "stdafx.h"
#include "WAVPlay.h"
#include "WAVPlayDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class 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()

/////////////////////////////////////////////////////////////////////////////
// CWAVPlayDlg dialog

CWAVPlayDlg::CWAVPlayDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CWAVPlayDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CWAVPlayDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDI_ICON1);
}

void CWAVPlayDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CWAVPlayDlg)
	DDX_Control(pDX, IDC_PATH, m_Path);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CWAVPlayDlg, CDialog)
	//{{AFX_MSG_MAP(CWAVPlayDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_OPEN, OnOpen)
	ON_BN_CLICKED(IDC_PLAY, OnPlay)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CWAVPlayDlg message handlers

BOOL CWAVPlayDlg::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
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CWAVPlayDlg::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 CWAVPlayDlg::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 CWAVPlayDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CWAVPlayDlg::OnOpen() 
{
	// TODO: Add your control notification handler code here
	CFileDialog dlg(TRUE,"文件","*.wav",OFN_HIDEREADONLY,
		"声音文件(*.wav)|*.wav||",NULL);
	if(dlg.DoModal()==IDOK)
	{
        strName = dlg.GetPathName();
		m_Path.SetWindowText(strName);
	}
}

void CWAVPlayDlg::OnPlay() 
{
	// TODO: Add your control notification handler code here
	MCIDEVICEID m_nDeviceID;
	MCIDEVICEID m_nElementID;
	MCI_OPEN_PARMS mciOpenParms;

	mciOpenParms.lpstrDeviceType=(LPSTR)MCI_DEVTYPE_WAVEFORM_AUDIO;
	mciSendCommand(NULL,MCI_OPEN,MCI_OPEN_TYPE | MCI_OPEN_TYPE_ID
		| MCI_WAIT,(DWORD)(LPVOID)&mciOpenParms);
	m_nDeviceID=mciOpenParms.wDeviceID;

	MCI_OPEN_PARMS mciOpen;
	memset(&mciOpen,0,sizeof(MCI_OPEN_PARMS));
	mciOpen.lpstrElementName = strName;
	mciSendCommand(m_nDeviceID,MCI_OPEN,MCI_OPEN_ELEMENT,(DWORD)(LPVOID)&mciOpen);
	m_nElementID=mciOpen.wDeviceID;

	MCI_PLAY_PARMS mciPlay;
	mciPlay.dwCallback=(DWORD)this->GetSafeHwnd();
	mciSendCommand(m_nElementID,MCI_PLAY,MCI_NOTIFY,(DWORD)(LPVOID)&mciPlay);
}