UPSInit - NtDoc
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// upssvc.h
DWORD UPSInit();
View the official Windows Driver Kit DDI referenceNo description available.
The UPSInit function initializes a UPS minidriver, opens communication to the UPS unit, updates the registry, and causes the minidriver to start monitoring the UPS unit.
The UPSInit function returns one of the following DWORD values:
| Return code | Description |
|---|---|
| UPS_INITOK | No errors were encountered during initialization. |
| UPS_INITREGISTRYERROR | An error occurred while accessing the registry. |
| UPS_INITCOMMOPENERROR | An error occurred while opening the COM port. |
| UPS_INITCOMMSETUPERROR | An error occurred while setting up the COM port. |
| UPS_INITUNKNOWNERROR | An unidentified error occurred. |
The UPSInit function is the first function exported by a UPS minidriver that is called by the UPS service. The function must complete all initialization operations for the minidriver, including the following:
If the UPSInit function returns a value other than UPS_INITOK, the UPS service immediately calls the UPSStop function.