EVT_USBPM_EVENT_CALLBACK callback function (usbpmapi.h)
Sends notifications about hub arrival/removal and connector state changes.
Syntax
EVT_USBPM_EVENT_CALLBACK EvtUsbpmEventCallback;
void EvtUsbpmEventCallback(
[In] PUSBPM_EVENT_CALLBACK_PARAMS Params
)
{...}
Parameters
[In] Params
A pointer to the caller-supplied USBPM_EVENT_CALLBACK_PARAMS structure that the client driver fills with event-specific data.
Return value
None
Remarks
The client driver registers its implementation of this callback function by setting the appropriate member of USBPM_CLIENT_CONFIG and then calling UsbPm_Register. Policy Manager can invoke the client driver's implementation before [UsbPm_Register] returns.
To stop Policy Manager from invoking the callback function, the client driver must call UsbPm_Deregister.
Callback function calls are serialized. Only one call is active at a time.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10, version 1809 |
| Minimum KMDF version | 1.27 |
| Minimum UMDF version | 2.27 |
| Header | usbpmapi.h |