Autodocs
Devices:
gameport.device
GPD_ASKCTYPE
GPD_ASKTRIGGER
GPD_READEVENT
GPD_SETCTYPE
GPD_SETTRIGGER
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Docs » Autodocs » gameport.device » GPD_ASKTRIGGER
GPD_ASKTRIGGER -- Inquire the conditions for a game port report
This command inquires what conditions must be met by a game
port unit before a pending Read request will be satisfied.
These conditions, called triggers, are independent -- that
any one occurs is sufficient to queue a game port report to
the Read queue. These conditions are set by SetTrigger.
This command always executes immediately.
IO REQUEST
io_Message mn_ReplyPort set if quick I/O is not possible
io_Device preset by the call to OpenDevice
io_Unit preset by the call to OpenDevice
io_Command GPD_ASKTRIGGER
io_Flags IOB_QUICK set if quick I/O is possible
io_Length sizeof(gamePortTrigger)
io_Data a structure of type GamePortTrigger, which
has the following elements
gpt_Keys -
GPTB_DOWNKEYS set if button down transitions
trigger a report, and GPTB_UPKEYS set if button up
transitions trigger a report
gpt_Timeout -
a time which, if exceeded, triggers a report;
measured in vertical blank units (60/sec)
gpt_XDelta -
a distance in x which, if exceeded, triggers a
report
gpt_YDelta -
a distance in x which, if exceeded, triggers a
report
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