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<td width=160 style='width:120.0pt;background:#330099;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:Verdana;
color:white'> <nobr><b>Windows Management Instrumentation SDK Sample</b></span>
<o:p></o:p></p>
</td>
</tr>
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<p class=MsoPlainText><br>
<strong><span style='font-size:13.5pt;font-family:Verdana'>DiskPerfWbem</span></strong><br
style='mso-special-character:line-break'>
<![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'>
<![endif]></p>
<p class=MsoPlainText><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho"'>The DiskPerfWbem sample surfaces disk performance information
produced by the DiskPerf driver using WMI. The driver produces disk partition performance
instrumentation data and exposes this data through a WMI interface.<span
style="mso-spacerun: yes">� </span>The information provided includes statistics
such as number of bytes read and written, number of read and write operations
performed and the time these operations took to complete.<span
style="mso-spacerun: yes">� </span>The DiskPerf driver is included as a sample
on the Windows 2000 Professional Beta 3 DDK and is also standard as part of the
Windows 2000 Professional Beta 3 operating system installation.<o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText><b><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho"'>NOTE</span></b><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho"'>:<span style="mso-spacerun: yes">� </span>The DiskPerf sample driver
was also present in the Windows 2000 Beta 2 DDK. While the DiskPerfWbem sample
application may also work with Windows 2000 Beta 2 and the Windows 2000 Beta 2
DDK version of the driver, it is highly recommended that Windows 2000 Beta 3
and the Windows 2000 Beta 3 DDK version of the driver be used.<o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText><strong><span style='font-size:12.0pt;mso-bidi-font-size:
10.0pt;font-family:Verdana;font-weight:normal'>Getting Started with the
DiskPerfWbem Sample<o:p></o:p></span></strong></p>
<p class=MsoPlainText><span style='font-size:12.0pt;mso-bidi-font-size:10.0pt;
font-family:Verdana;mso-fareast-font-family:"MS Mincho"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho"'>To use this sample, the following steps are required:<o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-family:Verdana;
mso-fareast-font-family:"MS Mincho"'>1)<span style='font:7.0pt "Times New Roman"'>
</span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho"'>Install Windows 2000 Professional Beta 3 operating system.<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"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-family:Verdana;
mso-fareast-font-family:"MS Mincho"'>2)<span style='font:7.0pt "Times New Roman"'>
</span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho"'>Install the WMI SDK for Windows 2000 Professional Beta 3.<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"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-family:Verdana;
mso-fareast-font-family:"MS Mincho"'>3)<span style='font:7.0pt "Times New Roman"'>
</span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho"'>Compile the sample application provided here, using the WMI SDK to
produce dpwbem.exe.<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"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-family:Verdana;
mso-fareast-font-family:"MS Mincho"'>4)<span style='font:7.0pt "Times New Roman"'>
</span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho"'>If desired, the DiskPerf driver in the Windows 2000 Professional
Beta 3 DDK can replace the one from the operating system install.<span
style="mso-spacerun: yes">� </span>To do so, compile the DiskPerf driver in the
DDK substitute it for the standard driver.<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"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-family:Verdana;
mso-fareast-font-family:"MS Mincho"'>5)<span style='font:7.0pt "Times New Roman"'>
</span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho"'>Open Device Manager.<span style="mso-spacerun: yes">�
</span>Select Disk Drives and view properties via the Action menu.<span
style="mso-spacerun: yes">� </span>Choose the �Advanced� tab and check the
�Enable Disk Performance Counters� option.<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"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2;
tab-stops:list .5in'><![if !supportLists]><span style='font-family:Verdana;
mso-fareast-font-family:"MS Mincho";mso-bidi-font-family:"Times New Roman"'>6)<span
style='font:7.0pt "Times New Roman"'> </span></span><![endif]><span
style='font-family:Verdana;mso-fareast-font-family:"MS Mincho"'>Restart Windows
2000 Professional and run dpwbem.exe. You should now see instrumentation data
produced by the DiskPerf driver visible via the WMI application.</span><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=MsoNormal style='tab-stops:list .5in'><![if !supportEmptyParas]> <![endif]><o:p></o:p></p>
<p class=MsoNormal style='tab-stops:list .5in'><strong><span style='font-family:
Verdana;font-weight:normal'>General Notes<o:p></o:p></span></strong></p>
<p class=MsoNormal style='tab-stops:list .5in'><strong><span style='font-family:
Verdana;font-weight:normal'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></strong></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"'>Things
to remember when you're building your own WMI client application:<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"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.25in;text-indent:-.25in;mso-list:
l0 level1 lfo4;tab-stops:list .25in .5in'><![if !supportLists]><span
style='font-family:"Times New Roman";mso-fareast-font-family:"MS Mincho"'>1.<span
style='font:7.0pt "Times New Roman"'>
</span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho";mso-bidi-font-family:"Times New Roman"'>If you want your client to
run on NT and non-DCOM versions of Windows 95, manually load the ole32.dll and
see if CoInitializeSecurity() exists. This routine won�t exist on Windows 95
installations that don�t have DCOM installed separately. If this routine
doesn't exist, the asynchronous routines in this sample won�t work because of
mismatched security level problems. The synchronous techniques will still work.<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"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.25in;text-indent:-.25in;mso-list:
l0 level1 lfo4;tab-stops:list .25in .5in'><![if !supportLists]><span
style='font-family:"Times New Roman";mso-fareast-font-family:"MS Mincho"'>2.<span
style='font:7.0pt "Times New Roman"'>
</span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho";mso-bidi-font-family:"Times New Roman"'>If you don�t care about
non-DCOM versions of Windows 95, you can define<span style="mso-spacerun:
yes">� </span>_WIN32_DCOM so that CoInitializeSecurity() is available for
implicit linking. Don't use _WIN32_WINNT to get this prototype since it won't
compile under the Windows 95/98 operating systems.<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"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.25in;text-indent:-.25in;mso-list:
l0 level1 lfo4;tab-stops:list .25in .5in'><![if !supportLists]><span
style='font-family:"Times New Roman";mso-fareast-font-family:"MS Mincho"'>3.<span
style='font:7.0pt "Times New Roman"'>
</span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho";mso-bidi-font-family:"Times New Roman"'>In any case, the
CoInitializeSecurity() call (in InitInstance()) is required to work around a
security problem when WMI trying to call a Sink object but won't identify
itself. The CoInitializeSecurity() call turns off the authentication
requirement. <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"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.25in;text-indent:-.25in;mso-list:
l0 level1 lfo4;tab-stops:list .25in .5in'><![if !supportLists]><span
style='font-family:"Times New Roman";mso-fareast-font-family:"MS Mincho"'>4.<span
style='font:7.0pt "Times New Roman"'>
</span></span><![endif]><span style='font-family:Verdana;mso-fareast-font-family:
"MS Mincho";mso-bidi-font-family:"Times New Roman"'>WMI interfaces are defined
in wbemcli.h and wbemprov.h found in the wmi\include directory.<span
style="mso-spacerun: yes">� </span>You may #include both these files by
including just wbemidl.h located in the same directory.<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"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.25in;text-indent:-.25in;mso-list:
l0 level1 lfo4;tab-stops:list .25in .5in'><![if !supportLists]><span
style='font-family:"Times New Roman";mso-fareast-font-family:"MS Mincho"'>5.<span
style='font:7.0pt "Times New Roman"'>
</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"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.25in;text-indent:-.25in;mso-list:
l0 level1 lfo4;tab-stops:list .25in .5in'><![if !supportLists]><span
style='font-family:"Times New Roman";mso-fareast-font-family:"MS Mincho"'>6.<span
style='font:7.0pt "Times New Roman"'>
</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"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.25in;text-indent:-.25in;mso-list:
l0 level1 lfo4;tab-stops:list .25in .5in'><![if !supportLists]><span
style='font-family:"Times New Roman";mso-fareast-font-family:"MS Mincho"'>7.<span
style='font:7.0pt "Times New Roman"'>
</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"'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></p>
<p class=MsoPlainText style='margin-left:.25in;text-indent:-.25in;mso-list:
l0 level1 lfo4;tab-stops:list .25in .5in'><![if !supportLists]><span
style='font-family:"Times New Roman";mso-fareast-font-family:"MS Mincho"'>8.<span
style='font:7.0pt "Times New Roman"'>
</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 VC vars. In
VC++ 5.0, it is VCVARS32.BAT.<o:p></o:p></span></p>
<p class=MsoNormal style='tab-stops:list .5in'><br>
<span style='font-family:Arial'><a
href="http://www.microsoft.com/misc/CPYRIGHT.HTM"><b>� 1998-1999 Microsoft
Corporation. All rights reserved.</b></a></span></p>
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