Windows ThreadPool APIs

The ThreadPool APIs are pretty cool, but the docs are confusing at first blush and the sample code is horrible (just one sample, and suffers from kitchen-sink syndrome). But fear not! MSDN lets users comment, so I did :-) Repro'd here for posterity:

The sample is rather big and sprawling, making it hard to understand w/o knowing most of the API surface. To just execute a simple block of work, it's actually pretty simple:

#include <windows.h>
#include <stdio.h>

void NTAPI MyWorkCallback(PTP_CALLBACK_INSTANCE instance, void * context, PTP_WORK work)
{

printf("Hello %s", context);

}

int main()
{

TP_WORK * work = CreateThreadpoolWork(MyWorkCallback, "world", NULL);
if (work == NULL)

printf("Error %d in CreateThreadpoolWork", GetLastError());

else {

SubmitThreadpoolWork(work);
WaitForThreadpoolWorkCallbacks(work, FALSE);
CloseThreadpoolWork(work);

}

}

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