QueryTraceProcessingHandle function (evntrace.h)

Retrieves information about an ETW trace processing session opened by OpenTrace.

Syntax

ETW_APP_DECLSPEC_DEPRECATED ULONG WMIAPI QueryTraceProcessingHandle(
 [in] PROCESSTRACE_HANDLE ProcessingHandle,
 [in] ETW_PROCESS_HANDLE_INFO_TYPE InformationClass,
 [in, optional] PVOID InBuffer,
 [in] ULONG InBufferSize,
 [out, optional] PVOID OutBuffer,
 [in] ULONG OutBufferSize,
 [out] PULONG ReturnLength
);

Parameters

[in] ProcessingHandle

A valid handle created with OpenTrace that the data should be queried from.

[in] InformationClass

An ETW_PROCESS_HANDLE_INFO_TYPE value that specifies what kind of operation will be done on the handle.

[in, optional] InBuffer

Reserved for future use. May be null.

[in] InBufferSize

Size in bytes of the InBuffer.

[out, optional] OutBuffer

Buffer provided by the caller to receive output data.

[in] OutBufferSize

Size in bytes of OutBuffer.

[out] ReturnLength

The size in bytes of the data that the API wrote into OutBuffer. Used for variable length returns.

Return value

If the function succeeds, the return value is ERROR_SUCCESS.

If the function fails, the return value is one of the system error codes.

Requirements