HP Remote Graphics Software (RGS) Uživatelský manuál stáhnout pdf (Strana 86)

DWORD dwCurrentCount;

DWORD dwNewIndex;

int waitedFor;

// This function will monitor the log for the specified number of

// seconds. If seconds is less than zero, we will wait forever.

for (waitedFor = 0; seconds < 0 || waitedFor < seconds; )

{

HANDLE h;

// Open, read status of log, close event log =========================

if ((h = OpenEventLog(eventServer, eventSource)) == NULL)

{

... report error status here ...

return;

}

// If an event is added, either the start or count will change.

// Get the start and count. Microsoft does not specify what

// reasons these functions could fail, so we cannot ensure

// success. Check the return value.

if (GetOldestEventLogRecord(h, &dwCurrentStart) == false ||

GetNumberOfEventLogRecords(h, &dwCurrentCount) == false)

{

CloseEventLog(h);

... report error - unable to obtain event logs ...

return;

}

if (CloseEventLog(h) == false)

{

... report error status here ...

return;

}

// Determine state of log change =====================================

// Compute the index of the last event. If the count is zero, then

// there are no events and the index is 0.

if (dwCurrentCount == 0)

{

74 Chapter 8 Advanced RGS features

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HP Remote Graphics Software (RGS) Uživatelský manuál Strana 86