| 术语 | pdhgetrawcounterarray |
| 释义 | PdhGetRawCounterArray 语法： C++ PDH_STATUS PdhGetRawCounterArray( __in PDH_HCOUNTER hCounter, __inout LPDWORD lpdwBufferSize, __out LPDWORD lpdwItemCount, __out PPDH_RAW_COUNTER_ITEM ItemBuffer ); PdhGetRawCounterArray功能 从指定的计数器返回值数组的原料。使用此功能时，您要检索的一个计数器，包含一个实例名称通配符原始计数器值。 参数 hCounter [in] 在柜台办理，其目前的原料，例如价值要检索。该PdhAddCounter函数返回此句柄。 lpdwBufferSize [ in , out ] 的大小ItemBuffer缓冲区，以字节为单位。如果零输入，该函数返回PDH_MORE_DATA，并设置此参数所需的缓冲区大小。如果缓冲区比所需的大小，功能设置此参数的时候，往往有人使用的缓冲区的实际大小。如果在输入指定的大小是大于零，但比所需的大小少，您不应该依靠返回的大小重新分配缓冲区。 lpdwItemCount [out] 数在ItemBuffer缓冲区原始计数器值。 ItemBuffer [out] 来电分配的缓冲区，它接收的PDH_RAW_COUNTER_ITEM结构的数组，该结构包含原始实例计数器值。设置为NULL，如果lpdwBufferSize是零。 返回值 如果函数成功，它返回ERROR_SUCCESS。 如果函数失败，返回值是一个系统错误代码或一种PDH错误代码。以下是可能的值。 返回codeDescription PDH_MORE_DATAThe ItemBuffer缓冲区不够大，无法包含对象的名称。这个返回值，预计如果lpdwBufferSize是在输入为零。如果在输入指定的大小是大于零，但比所需的大小少，您不应该依靠返回的大小重新分配缓冲区。 PDH_INVALID_ARGUMENTA参数无效或格式不正确。例如，在某些版本中您可以收到此错误如果在输入指定的大小是大于零但小于所需的大小。 PDH_INVALID_HANDLEThe计数器句柄无效。 备注 您应该调用这个函数两次，第一次获得所需的缓冲区大小(设置ItemBuffer为NULL和lpdwBufferSize为0)，和第二次获取数据。 该计数器的数据被锁定为通话时间，以PdhGetRawCounterArray，防止在呼叫处理的任何变化。 要求： 最低支持：client－Windows 2000专业版 最低支持server－Windows 2000服务器 HeaderPdh.h LibraryPdh.lib DLLPdh.dll Unicode和ANSI namesPdhGetRawCounterArrayW(Unicode)和PdhGetRawCounterArrayA(ANSI)的 参见 PdhGetFormattedCounterValue PdhGetFormattedCounterArray PdhCalculateCounterFromRawValue PDH_RAW_COUNTER_ITEM 如果有任何问题和意见，请发送给微软(wsddocfb@microsoft.com) 生成日期：2009年7月23日 ＝＝英文原文＝＝PdhGetRawCounterArray Function Returns an array of raw values from the specified counter. Use this function when you want to retrieve the raw counter values of a counter that contains a wildcard character for the instance name. Syntax C++ PDH_STATUS PdhGetRawCounterArray( __in PDH_HCOUNTER hCounter, __inout LPDWORD lpdwBufferSize, __out LPDWORD lpdwItemCount, __out PPDH_RAW_COUNTER_ITEM ItemBuffer ); Parameters hCounter [in] Handle of the counter for whose current raw instance values you want to retrieve. The PdhAddCounter function returns this handle. lpdwBufferSize [in, out] Size of the ItemBuffer buffer, in bytes. If zero on input, the function returns PDH_MORE_DATA and sets this parameter to the required buffer size. If the buffer is larger than the required size, the function sets this parameter to the actual size of the buffer that was used. If the specified size on input is greater than zero but less than the required size, you should not rely on the returned size to reallocate the buffer. lpdwItemCount [out] Number of raw counter values in the ItemBuffer buffer. ItemBuffer [out] Caller-allocated buffer that receives the array of PDH_RAW_COUNTER_ITEM structures; the structures contain the raw instance counter values. Set to NULL if lpdwBufferSize is zero. Return Value If the function succeeds, it returns ERROR_SUCCESS. If the function fails, the return value is a system error code or a PDH error code . The following are possible values. Return codeDescription PDH_MORE_DATAThe ItemBuffer buffer is not large enough to contain the object name. This return value is expected if lpdwBufferSize is zero on input. If the specified size on input is greater than zero but less than the required size, you should not rely on the returned size to reallocate the buffer. PDH_INVALID_ARGUMENTA parameter is not valid or is incorrectly formatted. For example, on some releases you could receive this error if the specified size on input is greater than zero but less than the required size. PDH_INVALID_HANDLEThe counter handle is not valid. Remarks You should call this function twice, the first time to get the required buffer size (set ItemBuffer to NULL and lpdwBufferSize to 0), and the second time to get the data. The data for the counter is locked for the duration of the call to PdhGetRawCounterArray to prevent any changes during processing of the call. Requirements Minimum supported clientWindows 2000 Professional Minimum supported serverWindows 2000 Server HeaderPdh.h LibraryPdh.lib DLLPdh.dll Unicode and ANSI namesPdhGetRawCounterArrayW (Unicode) and PdhGetRawCounterArrayA (ANSI) See Also PdhGetFormattedCounterValue PdhGetFormattedCounterArray PdhCalculateCounterFromRawValue PDH_RAW_COUNTER_ITEM Send comments about this topic to Microsoft Build date: 7/23/2009 ＝＝原始网址＝＝http://msdn.microsoft.com/en-us/library/aa372642(VS.85).aspx\n |
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