USB-I/O Interface Adapter GPIO-24. Programmer's Reference Manual.
2.2.1. GPIO_SendCommand()
GPIO_RESULT GPIO_GetEvent( HGPIO hDevice, GPIO_EVENT* pEvent );
The GPIO_GetEvent() function checks an event queue for an event or response sent by specified GPIO-24 adapter.
During DLL initialization you can choose how the library should notify your application when GPIO-24 adapter sends events or responses.
Parameters:
- hDevice
Handle to the GPIO-24 adapter. If the device handle is specified, an event queue will be checked for an event from the particular device. Use HGPIO_DLL_NOTIFICATION constant to obtain events sent by DLL. Use HGPIO_ALL_DEVICES constant to get the eldest event, sent either by any open device or by DLL.
- pEvent
Pointer to GPIO_EVENT structure to be filled with event details.
Return values:
- GPIO_S_SUCCESS
Function call succeeded.
- GPIO_E_EVENT_ABSENT
There are no new events.
- GPIO_E_HANDLE
Invalid device handle has been provided.
- GPIO_E_FAIL
Failed to read event.
- GPIO_E_NOT_INITIALIZED
Library has not been initialized.
