451 lines
17 KiB
HTML
451 lines
17 KiB
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<title>WMI SDK Sample - Decoupled Event Provider</title>
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<div class=Section1>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:Verdana;
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color:white'> <nobr><b>Windows Management Instrumentation SDK Sample</b></span>
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<o:p></o:p></p>
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</td>
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</tr>
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<p class=MsoPlainText><br>
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<strong><span style='font-size:13.5pt;font-family:Verdana;mso-bidi-font-family:
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"Courier New"'>Decoupled Event Provider</span></strong><br
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style='mso-special-character:line-break'>
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<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
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<![endif]><span style='font-family:Verdana'><o:p></o:p></span></p>
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<p class=MsoPlainText><span style='font-family:Verdana'>The
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Decoupled event provider sample code creates an event provider for
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WMI.<span style='mso-spacerun:yes'><EFBFBD> </span>An event provider allows event
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instances to be forwarded based on some change in state of a dynamic data
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source. The event provider is called when a client request requires information
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relevant to that particular provider. The event provider is a decoupled
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provider. A decoupled provider 'decouples' the lifetime of the hosting process
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from the liftetime of the wmi service, this is distinct from existing 'coupled'
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providers that are launched by the WMI service through the com activation
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mechanism. Typically an application or server process is launched and services
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requests relating to a particular application domain, e.g. database server,
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mail server, etc. A decoupled provider registers it's ability to handle
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provider requests, associated with the application domain, during the startup
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procedure for the application or service; whilst the application or service is
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not running or registered WMI will not attempt to satisfy client requests
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associated with the provider. </span></p>
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<p class=MsoPlainText> </p>
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<p class=MsoPlainText><span style='font-family:Verdana'>The sample provider
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supports a single event class 'SampleEvent ', that forwards a simple event
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instance. </span></p>
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<p class=MsoPlainText> </p>
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<p class=MsoPlainText><span style='font-size:12.0pt;mso-bidi-font-size:10.0pt;
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font-family:Verdana'>Building the Provider EXE</span></p>
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<p class=MsoPlainText> </p>
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<p class=MsoPlainText><span style='font-family:Verdana'>The EXE can be
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built using Microsoft
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Visual C++.<span style='mso-spacerun:yes'><EFBFBD> </span><o:p></o:p></span></p>
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<p class=MsoPlainText><span style='font-family:Verdana'> <o:p></o:p></span></p>
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<p class=MsoPlainText style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2;
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tab-stops:list .5in'><![if !supportLists]><span style='font-family:Verdana;
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mso-fareast-font-family:Verdana;mso-bidi-font-family:Verdana'><span
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style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'>
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</span></span></span><![endif]><span style='font-family:Verdana'>Select File +
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Open Workspace<o:p></o:p></span></p>
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<p class=MsoPlainText style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2;
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tab-stops:list .5in'><![if !supportLists]><span style='font-family:Verdana;
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mso-fareast-font-family:Verdana;mso-bidi-font-family:Verdana'><span
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style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'>
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</span></span></span><![endif]><span style='font-family:Verdana'>Select the
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SdkSample.DSP file<o:p></o:p></span></p>
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<p class=MsoPlainText style='tab-stops:list .5in'> </p>
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<p class=MsoPlainText style='tab-stops:list .5in'> </p>
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<p class=MsoPlainText style='tab-stops:list .5in'><span style='font-size:12.0pt;
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mso-bidi-font-size:10.0pt;font-family:Verdana'>Registering the event Class and
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provider<o:p></o:p></span></p>
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||
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<p class=MsoPlainText style='tab-stops:list .5in'> </p>
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||
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<p class=MsoPlainText style='tab-stops:list .5in'><span style='font-family:
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Verdana'><o:p> </o:p></span></p>
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||
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<p class=MsoNormal><span style='font-family:Verdana;color:windowtext'>You must
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||
also compile the MOF in order to make the WMI CIMOM aware of the class.<span
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||
style='mso-spacerun:yes'><EFBFBD> </span>From the command line in the sample
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||
installation directory, type the following:</span><span style='color:windowtext'>
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||
</span><span style='font-family:Verdana;color:windowtext'><o:p></o:p></span></p>
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||
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||
<blockquote style='margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
|
||
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||
<blockquote style='margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
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||
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<p class=MsoPlainText style='tab-stops:list .5in'><b><span style='font-family:
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Verdana'>MOFCOMP ProvReg.MOF</span></b><span style='font-family:Verdana'> <o:p></o:p></span></p>
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||
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||
</blockquote>
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||
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</blockquote>
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<p class=MsoPlainText style='tab-stops:list .5in'><span style='font-family:
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Verdana'>At this point, you can run the executable sdksample.exe in combination
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with the event consumer sample and here a beep as each event is received by the
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consumer.<o:p></o:p></span></p>
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<p class=MsoPlainText style='tab-stops:list .5in'> </p>
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||
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<p class=MsoNormal style='tab-stops:list .5in'><strong><span style='font-family:
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Verdana;font-weight:normal'>General Notes<o:p></o:p></span></strong></p>
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<p class=MsoNormal style='tab-stops:list .5in'><strong><span style='font-family:
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Verdana;font-weight:normal'> <o:p></o:p></span></strong></p>
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<p class=MsoPlainText style='tab-stops:list .5in'><span style='font-family:
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Verdana;mso-fareast-font-family:"MS Mincho";mso-bidi-font-family:"Times New Roman"'>Things
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||
to remember when you're building your own WMI provider:</span><span
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style='mso-fareast-font-family:"MS Mincho";mso-bidi-font-family:"Times New Roman"'><o:p></o:p></span></p>
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||
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<p class=MsoPlainText style='tab-stops:list .5in'><span style='font-family:
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Verdana;mso-fareast-font-family:"MS Mincho";mso-bidi-font-family:"Times New Roman"'> <o:p></o:p></span></p>
|
||
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||
<p class=MsoPlainText style='margin-left:.25in;text-indent:-.25in;mso-list:
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l2 level1 lfo6;tab-stops:list .25in .5in'><![if !supportLists]><span
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||
style='font-family:"Times New Roman"'><span style='mso-list:Ignore'>1.<span
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||
style='font:7.0pt "Times New Roman"'>
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||
</span></span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
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"MS Mincho";mso-bidi-font-family:"Times New Roman"'>WMI interfaces are defined
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in wbemcli.h and wbemprov.h found in the wmi\include directory.<span
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style='mso-spacerun:yes'><EFBFBD> </span>You may #include both these files by
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including just wbemidl.h located in the same directory.<o:p></o:p></span></p>
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|
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<p class=MsoPlainText style='tab-stops:list .5in'><span style='font-family:
|
||
Verdana;mso-fareast-font-family:"MS Mincho";mso-bidi-font-family:"Times New Roman"'> <o:p></o:p></span></p>
|
||
|
||
<p class=MsoPlainText style='margin-left:.25in;text-indent:-.25in;mso-list:
|
||
l2 level1 lfo6;tab-stops:list .25in .5in'><![if !supportLists]><span
|
||
style='font-family:"Times New Roman"'><span style='mso-list:Ignore'>2.<span
|
||
style='font:7.0pt "Times New Roman"'>
|
||
</span></span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
|
||
"MS Mincho";mso-bidi-font-family:"Times New Roman"'>WMI interface CLSIDs are defined
|
||
in wbemuuid.lib. If you get unresolved externals in interfaces and CLSIDs, this
|
||
is what is missing. <o:p></o:p></span></p>
|
||
|
||
<p class=MsoPlainText style='tab-stops:list .5in'><span style='font-family:
|
||
Verdana;mso-fareast-font-family:"MS Mincho";mso-bidi-font-family:"Times New Roman"'> <o:p></o:p></span></p>
|
||
|
||
<p class=MsoPlainText style='margin-left:.25in;text-indent:-.25in;mso-list:
|
||
l2 level1 lfo6;tab-stops:list .25in .5in'><![if !supportLists]><span
|
||
style='font-family:"Times New Roman"'><span style='mso-list:Ignore'>3.<span
|
||
style='font:7.0pt "Times New Roman"'>
|
||
</span></span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
|
||
"MS Mincho";mso-bidi-font-family:"Times New Roman"'>You'll need to link with
|
||
oleaut32.lib and ole32.lib to get the needed COM support.<o:p></o:p></span></p>
|
||
|
||
<p class=MsoPlainText style='tab-stops:list .5in'><span style='font-family:
|
||
Verdana;mso-fareast-font-family:"MS Mincho";mso-bidi-font-family:"Times New Roman"'> <o:p></o:p></span></p>
|
||
|
||
<p class=MsoPlainText style='margin-left:.25in;text-indent:-.25in;mso-list:
|
||
l2 level1 lfo6;tab-stops:list .25in .5in'><![if !supportLists]><span
|
||
style='font-family:"Times New Roman"'><span style='mso-list:Ignore'>4.<span
|
||
style='font:7.0pt "Times New Roman"'>
|
||
</span></span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
|
||
"MS Mincho";mso-bidi-font-family:"Times New Roman"'>In the Link|Output
|
||
settings, specify 'wWinMainCRTStartup' as the entry point. This is per the
|
||
Unicode programming instructions.<o:p></o:p></span></p>
|
||
|
||
<p class=MsoPlainText style='tab-stops:list .5in'><span style='font-family:
|
||
Verdana;mso-fareast-font-family:"MS Mincho";mso-bidi-font-family:"Times New Roman"'> <o:p></o:p></span></p>
|
||
|
||
<p class=MsoPlainText style='margin-left:.25in;text-indent:-.25in;mso-list:
|
||
l2 level1 lfo6;tab-stops:list .25in .5in'><![if !supportLists]><span
|
||
style='font-family:"Times New Roman"'><span style='mso-list:Ignore'>5.<span
|
||
style='font:7.0pt "Times New Roman"'>
|
||
</span></span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
|
||
"MS Mincho"'>If you're using the makefiles, don't forget to set the Visual C++
|
||
environment variables. This is done by running VCVARS32.BAT.<o:p></o:p></span></p>
|
||
|
||
<p class=MsoNormal style='tab-stops:list .5in'><br style='mso-special-character:
|
||
line-break'>
|
||
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
|
||
<![endif]></p>
|
||
|
||
</div>
|
||
|
||
</body>
|
||
|
||
</html>
|