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WinCE中基于Media Player的多媒体开发 |
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时间: 2005-12-07 来自：天极开发 |
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使用旧版本的WMP控件
如果你使用的手持设备没有WMP10，那事情还没有完。你仍然还可以使用WMP OCX版本8来为你的Pocket PC编程，虽然提供的功能特性少，好在也可以基本满足需要。我创建了一个简单的工程来展示它如何在MFC环境下工作。下面的代码段证明了它和ATL方式一样简单：
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
} |
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