WDC_CallKerPlug()

DWORD DLLCALLCONV WDC_CallKerPlug	(	_In_ WDC_DEVICE_HANDLE	hDev,
		_In_ DWORD	dwMsg,
		_Inout_ PVOID	pData,
		_Outptr_ PDWORD	pdwResult
	)

Sends a message from a user-mode application to a Kernel PlugIn driver.

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Send Kernel PlugIn messages

The function passes a message ID from the application to the Kernel PlugIn's KP_Call function, which should be implemented to handle the specified message ID, and returns the result from the Kernel PlugIn to the user-mode application.

Parameters

[in]	hDev	Handle to a WDC device, returned by WDC_xxxDeviceOpen()
[in]	dwMsg	A message ID to pass to the Kernel PlugIn driver (specifically to KP_Call)
[in,out]	pData	Pointer to data to pass between the Kernel PlugIn driver and the user-mode application
[out]	pdwResult	Result returned by the Kernel PlugIn driver (KP_Call) for the operation performed in the kernel as a result of the message that was sent

Returns

Returns WD_STATUS_SUCCESS (0) on success, or an appropriate error code otherwise