KBD_READEVENT

Return the next keyboard event.

Read raw keyboard events from the keyboard and put them in the data area of the iORequest. If there are no pending keyboard events, this command will not be satisfied, but if there are some events, but not as many as can fill IO_LENGTH, the request will be satisfied with those currently available.

io_Message

mn_ReplyPort set if quick I/O is not possible

io_Device

preset by the call to OpenDevice

io_Command

KBD_READEVENT

io_Flags

IOB_QUICK set if quick I/O is possible

io_Length

the size of the io_Data area in bytes: there are sizeof(inputEvent) bytes per input event.

io_Data

a buffer area to fill with input events. The fields of the input event are:

ie_NextEvent

links the events returned

ie_Class

is IECLASS_RAWKEY

ie_Code

contains the next key up/down reports

ie_Qualifier

only the shift and numeric pad bits are set

ie_SubClass

is not used, and set to zero

ie_X

is not used, and set to zero

ie_Y

is not used, and set to zero

ie_TimeStamp

is not used, and set to zero

This function sets the error field in the IORequest, and fills the IORequest with the next keyboard events (but not partial events).