ttdt_message_accept(library call)										 ttdt_message_accept(library call)

NAME

       ttdt_message_accept -- accept a contract to handle a ToolTalk request

SYNOPSIS

       #include <Tt/tttk.h>
       Tt_pattern *ttdt_message_accept(
       Tt_message contract,
       Ttdt_contract_cb cb,
       Widget shell,
       void *clientdata,
       int accept,
       int sendStatus);

DESCRIPTION

       The ttdt_message_accept function registers in the default session for TT_HANDLER-addressed requests:

	  1. Get_Geometry, Set_Geometry, Get_Iconified, Set_Iconified, Get_Mapped, Set_Mapped, Raise, Lower, Get_XInfo

	  2. Pause, Resume

	  3. Quit, Get_Status

       If  the	shell argument is not NULL, the ToolTalk service handles messages in (1) transparently; otherwise, it treats them like messages in
       (3).

       If shell is non- NULL and cb is NULL, then the ToolTalk service handles messages in (2) transparently by passing shell and the  appropriate
       boolean value to XtSetSensitive(3). If cb is NULL, then the ToolTalk service treats messages in (2) like (3).

       If cb is not NULL, ttdt_message_accept passes messages in (3) to the cb callback; otherwise it fails with TT_DESKTOP_ENOTSUP.

       If  accept is True, ttdt_message_accept calls tt_message_accept(3) with a contract argument.  If contract has a returned value from tt_mes-
       sage_status of TT_WRN_START_MESSAGE, it is the message that caused the tool to be started.  The tool should join any  scopes  it  wants	to
       serve  before  accepting  contract,  so that it will receive any other messages already dispatched to its ptype.  Otherwise, those messages
       will cause other instances of the ptype to be started.  If that is in fact desired (for example, because the tool can only service one mes-
       sage at a time), then the tool should undeclare its ptype while it is busy.

       If sendStatus is True, ttdt_message_accept sends a Status notice to the requester, using the arguments (if any) passed to ttdt_open.

RETURN VALUE

       Upon  successful completion, the ttdt_message_accept function returns a null-terminated array of Tt_pattern, and associates this array with
       contract; otherwise, it returns an error pointer.  The application can use tt_ptr_error(3) to extract one of the following Tt_status values
       from the returned handle:

       TT_ERR_NOMP
		 The ttsession(1) process is not running and the ToolTalk service cannot restart it.

       TT_ERR_POINTER
		 The pointer passed does not point to an object of the correct type for this operation.

       TT_ERR_UNIMP
		 The  ttsession(1)  for  the  default  session	is  of	a  version  that  does	not  support  tt_message_accept.  If contract is a
		 TT_WRN_START_MESSAGE, messages to the tool's ptype will remain blocked until contract is rejected, replied to, or failed.

APPLICATION USAGE

       The ttdt_message_accept function is what a tool calls when it wants to accept responsibility for handling (that is, failing or rejecting) a
       request.

       If  contract  is  destroyed by tttk_message_destroy(3), then the patterns will also be destroyed.  Otherwise, the caller is responsible for
       iterating over the array and destroying each pattern.

EXAMPLES

       See ttdt_session_join(3) for an example of a Ttdt_contract_cb callback that can be used with ttdt_message_accept.

SEE ALSO

       Tt/tttk.h - Tttttk(5), ttdt_open(3), ttmedia_ptype_declare(3), tt_ptype_declare(3), ttdt_session_join(3), ttdt_file_join(3), tt_ptype_unde-
       clare(3), XtSetSensitive(3).

														 ttdt_message_accept(library call)