QueryBusTime routine
The QueryBusTime function gets the current 32-bit USB frame number.
Syntax
NTSTATUS QueryBusTime( _In_ PVOID BusContext, _Out_opt_ PULONG CurrentFrame );
Parameters
- BusContext [in]
-
Handle returned in the BusContext member of the USB_BUS_INTERFACE_USBDI_V0 structure by an IRP_MN_QUERY_INTERFACE request.
- CurrentFrame [out, optional]
-
Receives the current USB frame number.
Return value
Returns STATUS_SUCCESS on success, and the appropriate error code on failure.
Remarks
This routine replaces the USBD_QueryBusTime library function provided by usbd.sys.
The function definition that is provided on this reference page is an example function whose parameters are just placeholder names. The actual prototype of the function is declared in usbbusif.h as follows:
typedef NTSTATUS
(USB_BUSIFFN *PUSB_BUSIFFN_QUERY_BUS_TIME) (
IN PVOID,
IN PULONG
);
Requirements
|
Header |
|
|---|---|
|
Library |
|
|
IRQL | < = DISPATCH_LEVEL |
See also
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Build date: 12/5/2013
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