wavdevwn.cpp

西安电子科技大学王亚民教授所著《组态软件设计与开发》附带的源代码07章

// wavdevwn.cpp : implementation file
//

#include "stdafx.h"
#include "waves.h"
#include "wave.h"

#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CWaveDevWnd

CWaveDevWnd::CWaveDevWnd()
{
    m_pWaveOutDevice = NULL;
}

CWaveDevWnd::~CWaveDevWnd()
{
}

BEGIN_MESSAGE_MAP(CWaveDevWnd, CWnd)
    //{{AFX_MSG_MAP(CWavDevWnd)
    ON_MESSAGE(MM_WOM_DONE, OnWomDone)
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

BOOL CWaveDevWnd::Create(CWaveOutDevice* pDev)
{
    if (!CreateEx(0,
                  AfxRegisterWndClass(0),
                  "Wave Wnd",
                  WS_POPUP,
                  0,
                  0,
                  0,
                  0,
                  NULL,
                  NULL)) {
        TRACE("Failed to create wave notification window");
        return FALSE;
    }
    m_pWaveOutDevice = pDev;
    return TRUE;
}

/////////////////////////////////////////////////////////////////////////////
// CWavDevWnd message handlers

LRESULT CWaveDevWnd::OnWomDone(WPARAM w, LPARAM l)
{
    ASSERT(l);
    WAVEHDR* phdr = (WAVEHDR*) l;
    CWave* pWave = (CWave*)(phdr->dwUser);
    ASSERT(pWave->IsKindOf(RUNTIME_CLASS(CWave)));
    CWaveOutDevice* pOutDev = pWave->GetOutDevice();
    ASSERT(pOutDev);
    pOutDev->WaveOutDone(pWave, phdr);
    return 0;
}