mcimsgrecorddlg.cpp

来自「《Visual C++视频技术方案宝典》配套光盘」· C++ 代码 · 共 287 行

// MCIMsgRecordDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MCIMsgRecord.h"
#include "MCIMsgRecordDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#include <MMSystem.h>
#pragma comment(lib, "winmm.lib")
/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CMCIMsgRecordDlg dialog

CMCIMsgRecordDlg::CMCIMsgRecordDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMCIMsgRecordDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMCIMsgRecordDlg)
		// 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(IDR_MAINFRAME);
}

void CMCIMsgRecordDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMCIMsgRecordDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMCIMsgRecordDlg, CDialog)
	//{{AFX_MSG_MAP(CMCIMsgRecordDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_ADDPATH, OnAdd)
	ON_BN_CLICKED(IDC_BTRECORD, OnRecord)
	ON_BN_CLICKED(IDC_BTPLAY, OnPlay)
	ON_BN_CLICKED(IDC_SAVE, OnSave)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMCIMsgRecordDlg message handlers

BOOL CMCIMsgRecordDlg::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
	
	m_bReset=FALSE;
	GetDlgItem(IDC_PATH)->EnableWindow(false);
	GetDlgItem(IDC_BTRECORD)->EnableWindow(false);
	GetDlgItem(IDC_BTPLAY)->EnableWindow(false);
	GetDlgItem(IDC_SAVE)->EnableWindow(false);
	GetDlgItem(IDC_TIME)->SetWindowText("6");

	return TRUE;
}

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

void CMCIMsgRecordDlg::OnAdd() 
{
	CFileDialog file(false,NULL,NULL,NULL,"文件(*.wav)|*.wav||");
	if(file.DoModal()==IDOK)
	{
		CString strname=file.GetPathName();
		strname+=".wav";
		GetDlgItem(IDC_PATH)->SetWindowText(strname);
		GetDlgItem(IDC_BTRECORD)->EnableWindow(true);
	}
}

void CMCIMsgRecordDlg::OnRecord() 
{
	CString time;
	LPTSTR lpstrCommand=NULL;
	GetDlgItem(IDC_TIME)->GetWindowText(time);
	GetDlgItem(IDC_BTRECORD)->EnableWindow(false);
	if(atoi(time)>60)
	{
		MessageBox("可以录制60秒以内的内容");
		GetDlgItem(IDC_TIME)->SetWindowText("6");
		return;
	}
	MCI_OPEN_PARMS mciOpenParms;
    MCI_RECORD_PARMS mciRecordParms;
	
    mciOpenParms.lpstrDeviceType = "waveaudio";
    mciOpenParms.lpstrElementName = "";
    //打开录音设备
	if(mciSendCommand(0, MCI_OPEN,
        MCI_OPEN_ELEMENT | MCI_OPEN_TYPE, 
        (DWORD)(LPVOID) &mciOpenParms))
		{
			MessageBox("打开设备失败，设备将关闭");
			mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL);
			return;
		}
    wDeviceID = mciOpenParms.wDeviceID;
	//设置录制时间，毫秒为单位
    mciRecordParms.dwTo = atoi(time)*1000;
    if(mciSendCommand(wDeviceID, MCI_RECORD, 
        MCI_TO | MCI_WAIT, (DWORD)(LPVOID) &mciRecordParms))
		{
			MessageBox("录制失败，设备将关闭");
			mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL);
			return;
		}
	m_bReset=TRUE;
	//等待录音完成
	::Sleep(atoi(time)*1000);
	mciSendCommand(wDeviceID, MCI_STOP, 0, NULL);
	GetDlgItem(IDC_BTPLAY)->EnableWindow(true);
	GetDlgItem(IDC_SAVE)->EnableWindow(true);
	
}

void CMCIMsgRecordDlg::OnPlay() 
{
	if(m_bReset)
	{
		MCI_PLAY_PARMS mciPlayParms;
		mciPlayParms.dwFrom = 0L;
		//播放已录制的音频内容
		if(mciSendCommand(wDeviceID, MCI_PLAY,
		  MCI_FROM | MCI_WAIT, (DWORD)(LPVOID) &mciPlayParms))
			{
				MessageBox("录制失败，设备将关闭");
				mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL);  
			}
	}
}

void CMCIMsgRecordDlg::OnSave() 
{
	CString tmp;
	char buffer[128];
	GetDlgItem(IDC_PATH)->GetWindowText(tmp);
	DWORD dwReturn;
	MCI_SAVE_PARMS mciSaveParms;
	mciSaveParms.lpfilename=tmp;
    if(dwReturn=mciSendCommand(wDeviceID, MCI_SAVE,
        MCI_SAVE_FILE|MCI_WAIT,(DWORD)(LPVOID)&mciSaveParms))
    {
		mciGetErrorString(dwReturn, buffer, sizeof(buffer));
		::MessageBox(NULL,buffer,"MCI_SAVE",MB_OK);
        mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL);
		return;
    }
	GetDlgItem(IDC_PATH)->SetWindowText("");
	mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL);
	m_bReset=FALSE;
	GetDlgItem(IDC_BTPLAY)->EnableWindow(false);
	GetDlgItem(IDC_SAVE)->EnableWindow(false);
	GetDlgItem(IDC_BTRECORD)->EnableWindow(false);
}

BOOL CMCIMsgRecordDlg::DestroyWindow() 
{
	if(!m_bReset)
	{
		mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL);
	}
	return CDialog::DestroyWindow();
}