Tracing

Tracing is acheived with the Inflight Trace Recorder. Tracing can be added to Driver.cpp using TraceLog. Example:

TraceEvents(TRACE_LEVEL_ERROR, TRACE_DRIVER , "WdfDriverCreate failed, %!STATUS!", ntStatus);

Note that the file which includes TraceEvents must have the appropriate flags set in the .vcxproj:

<ClCompile Include="Driver.cpp">
<WppEnabled>true</WppEnabled>
<WppRecorderEnabled>true</WppRecorderEnabled>
<WppPreprocessorDefinitions>WPP_MACRO_USE_KM_VERSION_FOR_UM=1</WppPreprocessorDefinitions>
</ClCompile>

In order to view the logs, use the TraceView tool included in the windows SDK. For example it might be located here:

C:\wdk\Program Files\Windows Kits\10\Tools\10.0.22621.0\x64\traceview.exe

Once TraceView is running:

1. File -> Create New Log Session
2. Select "PDB (Debug Information) File" and click "...".
3. (Must build the solution first). Select IddSampleDriver.pdb file (located in x64/Debug/IddSampleDriver.pdb)
4. Click OK.
5. click Next >
6. Click Finish

Now the drivers log events will appear in the window.