📄 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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<TD align=right><A href="http://www.csdn.net/">CSDN</A> - <A
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<TD align=middle bgColor=#003399 height=10><FONT
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<TD><B> 在中Visual Studio .NET
2003利用DirectShow播放媒体文件(五)</B> sunjin007（原作）
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<TD align=middle bgColor=#003399><FONT color=#ffffff>关键字</FONT></TD>
<TD width=500> DirectShow DirectX .NET
2003</TD></TR>
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<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT
size=3>浏览、播放、暂停、关闭四按钮的相应事件响应函数如下：</FONT></SPAN></P>
<TABLE border=1 cellPadding=0 cellSpacing=0 class=MsoTableGrid
style="BORDER-BOTTOM: medium none; BORDER-COLLAPSE: collapse; BORDER-LEFT: medium none; BORDER-RIGHT: medium none; BORDER-TOP: medium none; mso-border-alt: solid windowtext .5pt; mso-yfti-tbllook: 480; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid windowtext; mso-border-insidev: .5pt solid windowtext">
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style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes">
<TD
style="BACKGROUND-COLOR: transparent; BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; PADDING-TOP: 0cm; WIDTH: 426.1pt; mso-border-alt: solid windowtext .5pt"
vAlign=top width=568>
<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="COLOR: blue; FONT-FAMILY: 新宋体; FONT-SIZE: 10pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 0pt">void</SPAN></B><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">
CPlayWndDlg::OnBnClickedBrowseButton()<?xml:namespace prefix =
o ns = "urn:schemas-microsoft-com:office:office"
/><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></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"> </SPAN>CFileDialog
dlgFile(TRUE, NULL,<SPAN style="mso-tab-count: 1">
</SPAN>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: 2">
</SPAN>OFN_HIDEREADONLY |
OFN_OVERWRITEPROMPT,<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">
</SPAN>"Movie Files (*.avi;*.mpg;*.mpeg)
|\<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">
</SPAN>*.avi;*.mpg;*.mpeg |\<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">
</SPAN>Audio Files (*.wav;*mp3;*.mpa;*.mpu;*.au)
|\<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">
</SPAN>*.wav;*.mp3;*.mpa;*.mpu;*.au
|\<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">
</SPAN><?xml:namespace prefix = st1 ns =
"urn:schemas-microsoft-com:office:smarttags" /><st1:place
w:st="on">Midi</st1:place> Files (*.mid;*.midi;*.rmi)
|\<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">
</SPAN>*.mid;*.midi;*.rmi| | ", <SPAN
style="COLOR: blue">this</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> </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"> </SPAN><SPAN
style="COLOR: blue">if</SPAN>(dlgFile.DoModal() ==
IDOK)<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">
</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">
</SPAN>m_strMediaFile<SPAN style="mso-spacerun: yes">
</SPAN>= dlgFile.GetPathName();<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">
</SPAN>GetDlgItem(IDC_MEDIAFILE_EDIT)->SetWindowText(m_strMediaFile);<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">
</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: 1"> </SPAN><SPAN
style="COLOR: blue">else<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: 2">
</SPAN><SPAN
style="COLOR: blue">return</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> </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">
</SPAN>CoCreateInstance(CLSID_FilterGraph, NULL,
CLSCTX_INPROC, IID_IGraphBuilder, (<SPAN
style="COLOR: blue">void</SPAN>
**)&m_pGraph);<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"> </SPAN>HRESULT hr
= m_pGraph->RenderFile(CA2W(m_strMediaFile),
NULL);<o:p></o:p></SPAN></B></P>
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