接口

描述

IWMPCore

WMP对象模型的根接口。你可以由此获取其他接口的指针并且通过它访问其他空间的基本特性。

IWMPControls

允许一个应用程序访问Windows Media Player控件；如它的播放，停止和暂停按钮。

IWMPError

提供错误信息。

IWMPEvents

把由Windows Media Player控件产生的事件提供给一个可以反馈的嵌入式程序。

IWMPMedia，IWMPMediaCollection

管理媒体项的属性。

IWMPNetwork

设置和获取Windows Media Player所使用的网络连接

IWMPPlayer

控制Windows Media Player空间的用户接口的行为。

IWMPPlaylist,
IWMPPlaylistArray,
IWMPPlaylistCollection

播放列表操作。

IWMPSettings

设置或者获取Windows Media Player的设置。

LRESULT CWMPHost::OnCreate(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
　AtlAxWinInit();
　CComPtr＜IAxWinHostWindow＞ spHost;
　CComPtr＜IConnectionPointContainer＞ spConnectionContainer;
　CComWMPEventDispatch *pEventListener = NULL;
　CComPtr＜IWMPEvents＞ spEventListener;
　HRESULT hr;
　RECT rcClient;
　m_dwAdviseCookie = 0;
　...
　// 创建窗口
　GetClientRect(&rcClient);
　m_wndView.Create(m_hWnd, rcClient, NULL, WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS);
　if (NULL == m_wndView.m_hWnd) goto FAILURE;
　// 在窗口中装载OCX
　hr = m_wndView.QueryHost(&spHost);
　if (FAILMSG(hr)) goto FAILURE;
　hr = spHost-＞CreateControl(CComBSTR(_T("WMPlayer.OCX")), m_wndView, 0);
　if (FAILMSG(hr)) goto FAILURE;
　hr = m_wndView.QueryControl(&m_spWMPPlayer);
　if (FAILMSG(hr)) goto FAILURE;
　// 开始监听事件
　hr = CComWMPEventDispatch::CreateInstance(&pEventListener);
　spEventListener = pEventListener;
　if (FAILMSG(hr)) goto FAILURE;
　hr = m_spWMPPlayer-＞QueryInterface(__uuidof(IConnectionPointContainer), (void**)&spConnectionContainer); if (FAILMSG(hr)) goto FAILURE;
　// 看OCX 是否支持IWMPEvents接口
　hr = spConnectionContainer-＞FindConnectionPoint(__uuidof(IWMPEvents), &m_spConnectionPoint);
　if (FAILMSG(hr)) goto FAILURE;
　hr = m_spConnectionPoint-＞Advise(spEventListener, &m_dwAdviseCookie);
　if (FAILMSG(hr)) goto FAILURE;
　return 0;FAILURE: ::PostQuitMessage(0);
　return 0;
}

<!--[if !vml]--><!--[endif]-->

LRESULT CWMPHost::OnFileOpen(WORD wNotifyCode, WORD wID, HWND hWndCtl, BOOL& bHandled)
{
　CFileOpenDlg dlgOpen;
　HRESULT hr;
　if (dlgOpen.DoModal(m_hWnd) == IDOK)
　{
　　hr = m_spWMPPlayer-＞put_URL(dlgOpen.m_bstrName);
　　if (FAILMSG(hr))
　　　return 0;
　}
　return 0;
}

＜HTML＞
＜HEAD＞
＜/HEAD＞
＜BODY＞
＜OBJECT ID=wmpocx WIDTH=200 HEIGHT=150 CLASSID="clsid:6BF52A52-394A-11d3-B153-00C04F79FAA6" TYPE="application/x-oleobject" VIEWASTEXT＞
＜PARAM name="uimode" value="none"＞
＜/OBJECT＞＜BR＞
＜script for="wmpocx" event="PlayStateChange(NewState)" language="JScript"＞ClipPlayState(NewState);
＜/script＞
＜script for="wmpocx" event="Error()" language="JScript"＞StopPlayer();＜/script＞
＜p＞
＜a href=# OnClick='PlayClip("\storage card\webapp\glass.wmv", ImgVideoPlay, true)'＞
＜IMG id="ImgVideoPlay" src="bt_play.gif" border="0"＞
＜/a＞
Video＜br＞
＜a href=# OnClick='PlayClip("\storage card\webapp\jeanne.wma", ImgAudioPlay, false)'＞
＜IMG id="ImgAudioPlay" src="bt_play.gif" border="0"＞
＜/a＞ Audio＜br＞
Play state sequence＜br＞
＜input type="text" id="PlayStateSequence" width=30＞
＜SCRIPT language="JScript"＞
＜!--var CurrentPlayImage = null;
var bVideo = null;
var bWasBuffering = false;
function StopPlayer()
{
　wmpocx.controls.stop();
　wmpocx.close();
　if (CurrentPlayImage != null)
　{
　　CurrentPlayImage.src = "bt_play.gif";
　}
　bWasBufferring = false;
}
function ClipPlayState(NewState)
{
　PlayStateSequence.value = PlayStateSequence.value + NewState + " ";
　switch(NewState) {
　　case 1:
　　　// stopped
　　　if (bWasBuffering)
　　　{
　　　　bWasBufferring = false;
　　　　if (CurrentPlayImage != null)
　　　　{
　　　　　CurrentPlayImage.src = "bt_play.gif";
　　　　}
　　　}
　　　break;
　　case 6:
　　　// buffering
　　　bWasBufferring = true;
　　　if (CurrentPlayImage != null)
　　　{
　　　　CurrentPlayImage.src = "bt_load.gif";
　　　}
　　　break;
　　case 9:
　　　// transitioning
　　case 11:
　　　// reconnecting
　　　bWasBufferring = false;
　　　break;
　　case 3:
　　　// playing
　　　if (bWasBufferring)
　　　{
　　　　if (CurrentPlayImage != null)
　　　　{
　　　　　CurrentPlayImage.src = "bt_stop.gif";
　　　　}
　　　　if (bVideo)
　　　　{
　　　　　wmpocx.fullScreen = true;
　　　　}
　　　}
　　　break;
　　　　default:
　　}
　}
　function PlayClip(url, img, video)
　{
　　if (wmpocx.playState == 3 && bVideo != null && bVideo != video)
　　{
　　　return;
　　}
　　bVideo = video;
　　CurrentPlayImage = img;
　　if (wmpocx.playState == 3)
　　{
　　　StopPlayer();
　　}
　　else
　　{
　　　PlayStateSequence.value = "";
　　　if (CurrentPlayImage != null)
　　　{
　　　　CurrentPlayImage.src = "bt_load.gif";
　　　}
　　　wmpocx.URL = url;
　　}
　}
　--＞
　＜/SCRIPT＞
＜/BODY＞
＜/HTML＞

BOOL CWMP8SampleDlg::OnInitDialog()
{
　CDialog::OnInitDialog();
　// 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
　CenterWindow(GetDesktopWindow());
　// center to the hpc screen
　CRect rect;
　m_Panel.GetClientRect(&rect);
　if ( m_PlayerWnd.CreateControl(__uuidof(WMP),L"", WS_VISIBLE|WS_CHILD,rect, &m_Panel,AFX_IDW_PANE_FIRST) )
　{
　　LPUNKNOWN lpUnk = m_PlayerWnd.GetControlUnknown();
　　HRESULT hr = lpUnk-＞QueryInterface(__uuidof(IWMP),(void**) &m_spWMPPlayer);
　}
　else
　{
　　AfxMessageBox(L"Failed to create WMP control");
　　::PostQuitMessage(0);
　　return 0;
　}
　if ( m_spWMPPlayer )
　{
　　m_WMPEvents.m_pMainDlg = (CWMP8SampleDlg*)this;
　　CComPtr＜IConnectionPointContainer＞ spConnectionContainer;
　　HRESULT hr = m_spWMPPlayer-＞ QueryInterface( IID_IConnectionPointContainer, (void**)&spConnectionContainer );
　　if (SUCCEEDED(hr))
　　{
　　　hr = spConnectionContainer-＞ FindConnectionPoint( __uuidof(_IWMPEvents), &m_spConnectionPoint );
　　}
　　if (SUCCEEDED(hr)) { hr = m_spConnectionPoint-＞Advise((IDispatch*)&m_WMPEvents, &m_dwAdviseCookie );
　}
　else
　{
　　AfxMessageBox(L"Failed to get WMP control events");
　　::PostQuitMessage(0);
　　return 0;
　}
　if ( FAILED(SetupWMP()) )
　{
　　AfxMessageBox(L"Failed to setup WMP control");
　　::PostQuitMessage(0);
　　return 0;
　}
}
m_spWMPPlayer-＞Stop();
return TRUE;
// return TRUE unless you set the focus to a
// control
}