Hello guys, I was just trying to compile the sample APO with WDK 5112. I got below result. Is there someone who did good job for this? No errors and got a wanted driver? I have followed the instruction following with the APO API, but no luck. C:\temp\Download\samples\sysfx\APO>build -cZ BUILD: Compile and Link for x86 BUILD: Start time: Fri May 05 16:35:24 2006 BUILD: Examining c:\temp\download\samples\sysfx\apo directory for files to compi le. BUILD: Elapsed time [0:00:00.030] BUILD: Building generated files in c:\temp\download\samples\sysfx\apo directory Running MIDL on - swapapointerface.idl errors in directory c:\temp\download\samples\sysfx\apo midl : error MIDL1001 : cannot open input file audioenginebaseapo.idl Running MIDL on - swapapodll.idl midl : error MIDL1001 : cannot open input file audioenginebaseapo.idl BUILD: Elapsed time [0:00:02.944] BUILD: Elapsed time [0:00:02.944] BUILD: Elapsed time [0:00:02.954] BUILD: Compiling c:\temp\download\samples\sysfx\apo directory Running MIDL on - swapapointerface.idl midl : error MIDL1001 : cannot open input file audioenginebaseapo.idl Running MIDL on - swapapodll.idl midl : error MIDL1001 : cannot open input file audioenginebaseapo.idl Compiling - swapapodll.rc swapapodll.rc(19) : error RC2135 : file not found: SwapAPODll.tlb Compiling - swapapogfx.cpp c:\winddk\5112\inc\copied_atlmfc\atlcore.h(182) : error C3861: '__analysis_assum e': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(1093) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(1169) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(2781) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5199) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5205) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5211) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5228) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5237) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5248) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5350) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5361) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5379) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5398) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5419) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5467) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5498) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5549) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5556) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5573) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5579) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5585) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5591) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5597) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5610) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5633) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5648) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlbase.h(5656) : error C3861: '__analysis_assu me': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlcom.h(175) : error C3861: '__analysis_assume ': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlcom.h(181) : error C3861: '__analysis_assume ': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlcom.h(197) : error C3861: '__analysis_assume ': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlcom.h(230) : error C3861: '__analysis_assume ': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlcom.h(236) : error C3861: '__analysis_assume ': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlcom.h(252) : error C3861: '__analysis_assume ': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlcom.h(285) : error C3861: '__analysis_assume ': identifier not found c:\winddk\5112\inc\copied_atlmfc\atlcom.h(291) : error C3861: '__analysis_assume ': identifier not found .................. link : error LNK1181: cannot open input file 'objchk_wlh_x86_vh\i386\swapapodll. res' BUILD: Elapsed time [0:00:12.418] BUILD: Compile errors: not linking c:\temp\download\samples\sysfx\apo directory BUILD: Elapsed time [0:00:12.428] BUILD: Elapsed time [0:00:12.428] BUILD: Finish time: Fri May 05 16:35:36 2006 BUILD: Done 7 files compiled - 237 Errors 1 library built - 1 Error ******************************* IMPORTANT MESSAGE ****************************** This transmission may contain information that is privileged, confidential and/or exempt from disclosure under applicable law. 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