tttk_Xt_input_handler - Process ToolTalk events for Xt clients
#include <Tt/tttk.h> void tttk_Xt_input_handler(XtPointer procid, int *source, XtInputId *id);
tttk_Xt_input_handler(3) ToolTalk Functions tttk_Xt_input_handler(3) NAME tttk_Xt_input_handler - Process ToolTalk events for Xt clients SYNOPSIS #include <Tt/tttk.h> void tttk_Xt_input_handler(XtPointer procid, int *source, XtInputId *id); DESCRIPTION If procid is not NULL, tttk_Xt_input_handler() passes it to tt_default_procid_set(3). The tttk_Xt_input_handler() function then calls tt_message_receive(3), which retrieves the next message avail- able, if any, for the default procid. If tt_message_receive(3) returns TT_ERR_NOMP, then tttk_Xt_input_handler() closes the default procid with ttdt_close(3), and removes the input source *id with XtRemoveIn- put(3X) if id is not zero. If a message is available and tt_mes- sage_receive(3) returns it (indicating it was not consumed by any mes- sage or pattern callback), then the ToolTalk service passes the message to tttk_message_abandon(3). RETURN VALUE The tttk_Xt_input_handler() function returns no value. APPLICATION USAGE The application should use tttk_Xt_input_handler() as its Xt input han- dler unless some messages are expected not to be consumed by callbacks. (The only messages that absolutely cannot be intercepted and consumed by callbacks are those that match observe signatures in a ptype or otype.) EXAMPLES int myTtFd; char *myProcID; myProcID = ttdt_open(&myTtFd, "WhizzyCalc", "Acme", "1.0", 1); /* ... */ /* Process the message that started us, if any */ tttk_Xt_input_handler(myProcID, 0, 0); /* ... */ XtAppAddInput(myContext, myTtFd, (XtPointer)XtInputReadMask, tttk_Xt_input_handler, myProcID); ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+------------------+ |Availability | library/tooltalk | +---------------+------------------+ |Stability | Committed | +---------------+------------------+ SEE ALSO tttk(5), ttdt_close(3), tttk_message_abandon(3), tt_default_pro- cid_set(3), tt_message_receive(3), XtAppAddInput(3X), XtRemoveIn- put(3X). ToolTalk 1.3 1 March 1996 tttk_Xt_input_handler(3)