ttdt_subcontract_manage(3) — Subroutines
CDE
NAME
ttdt_subcontract_manage − manage an outstanding request
SYNOPSIS
#include <tttk.h> Tt_pattern ∗ttdt_subcontract_manage(Tt_message subcontract,
Ttdt_contract_cb cb,
Widget shell,
void ∗clientdata);
DESCRIPTION
The ttdt_subcontract_manage function allows a requester to manage the standard Desktop interactions with the tool that is handling the request. The ttdt_subcontract_manage function registers in the default session for TT_HANDLER- addressed requests Get_Geometry and Get_XInfo, and Status notices.
If shell is not NULL, the ToolTalk service handles the Get_Geometry and Get_XInfo notices transparently; otherwise, it passes them to cb. The Status notice is always passed to the callback.
See ttdt_session_join(3) for a description of a Ttdt_contract_cb callback.
If subcontract is destroyed by tttk_message_destroy, then the patterns will also be destroyed; otherwise, the caller is responsible for iterating over the array and destroying each pattern.
RETURN VALUE
Upon successful completion, the ttdt_subcontract_manage function returns a null-terminated array of Tt_pattern, and associates this array with subcontract; 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_DESKTOP_EINVAL
Both the shell and cb arguments were NULL.
TT_ERR_NOMEM
There is insufficient memory available to perform the function.
TT_ERR_NOMP
The ttsession(1) process is not running and the ToolTalk service cannot restart it.
TT_ERR_POINTER
The subcontract argument was not a valid Tt_message.
TT_ERR_PROCID
The specified process identifier is out of date or invalid.