csdn_文档中心_在中visual studio _net 2003利用directshow播放媒体文件(五).htm

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                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; </SPAN><SPAN 
                  style="COLOR: blue">if</SPAN>(FAILED(hr))<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; 
                  </SPAN>{<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
                  </SPAN><SPAN style="COLOR: blue">char</SPAN> 
                  szMsg[200];<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
                  </SPAN>AMGetErrorText(hr, szMsg, <SPAN 
                  style="COLOR: blue">sizeof</SPAN>(szMsg));<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
                  </SPAN>AfxMessageBox(szMsg);<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; 
                  </SPAN>}<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><o:p>&nbsp;</o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; </SPAN><SPAN 
                  style="COLOR: green">//</SPAN></SPAN></B><B 
                  style="mso-bidi-font-weight: normal"><SPAN 
                  style="COLOR: green; FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt">指定父窗体<SPAN 
                  lang=EN-US><o:p></o:p></SPAN></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; 
                  </SPAN>IVideoWindow* pVidWin = NULL;<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; 
                  </SPAN>m_pGraph-&gt;QueryInterface(IID_IVideoWindow, (<SPAN 
                  style="COLOR: blue">void</SPAN> 
                  **)&amp;pVidWin);<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; 
                  </SPAN>pVidWin-&gt;put_Owner((OAHWND)m_hWnd);<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; 
                  </SPAN>pVidWin-&gt;put_WindowStyle(WS_CHILD | WS_CLIPSIBLINGS 
                  | WS_CLIPCHILDREN);<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><o:p>&nbsp;</o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; </SPAN>CRect 
                  rc;<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; 
                  </SPAN>GetDlgItem(IDC_VW_FRAME)-&gt;GetWindowRect(rc);<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; 
                  </SPAN>ScreenToClient(rc);<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; 
                  </SPAN>pVidWin-&gt;SetWindowPosition(rc.left, rc.top, 
                  rc.Width(), rc.Height());<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><o:p>&nbsp;</o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; </SPAN><SPAN 
                  style="COLOR: green">// </SPAN></SPAN></B><B 
                  style="mso-bidi-font-weight: normal"><SPAN 
                  style="COLOR: green; FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt">注意此处<SPAN 
                  lang=EN-US>Filter Graph Manager</SPAN>的事件以<SPAN 
                  lang=EN-US>WM_GRAPHNOTIFY</SPAN>发出<SPAN 
                  lang=EN-US>(</SPAN>用户定义的消息<SPAN 
                  lang=EN-US>).<o:p></o:p></SPAN></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; 
                  </SPAN>m_pGraph-&gt;QueryInterface(IID_IMediaEventEx, (<SPAN 
                  style="COLOR: blue">void</SPAN> 
                  **)&amp;m_pEvent);<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; 
                  </SPAN>m_pEvent-&gt;SetNotifyWindow((OAHWND)m_hWnd, 
                  WM_GRAPHNOTIFY, 0);<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><o:p>&nbsp;</o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; </SPAN><SPAN 
                  style="COLOR: green">// </SPAN></SPAN></B><B 
                  style="mso-bidi-font-weight: normal"><SPAN 
                  style="COLOR: green; FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt">设置<SPAN 
                  lang=EN-US>Seeking<o:p></o:p></SPAN></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><SPAN 
                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; 
                  </SPAN>m_pGraph-&gt;QueryInterface(IID_IMediaSeeking, (<SPAN 
                  style="COLOR: blue">void</SPAN> 
                  **)&amp;m_pMediaSeeking);<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><o:p>&nbsp;</o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><B 
                  style="mso-bidi-font-weight: normal"><SPAN lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt">}<o:p></o:p></SPAN></B></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><SPAN 
                  lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"><o:p>&nbsp;</o:p></SPAN></P>
                  <P align=left class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"><SPAN 
                  lang=EN-US 
                  style="COLOR: blue; FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt">void</SPAN><SPAN 
                  lang=EN-US 
                  style="FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt"> 
                  CPlayWndDlg::OnBnClickedPlayButton()<o:p></o:p></SPAN></P>