tt_message_receive(library call) tt_message_receive(library call)
NAME
tt_message_receive -- receive a message
SYNOPSIS
#include <Tt/tt_c.h>
Tt_message tt_message_receive(void)
DESCRIPTION
The tt_message_receive function returns a handle for the next message queued to be delivered to the process and also runs any message or
pattern callbacks applicable to the queued message.
If the return value of tt_message_status(3) for this message is TT_WRN_START_MESSAGE, the ToolTalk service started the process to deliver
the queued message; the process must reply to this message. If the return value of tt_message_receive is zero, no message is available.
RETURN VALUE
Upon successful completion, the tt_message_receive function returns the handle for the message object. The application can use
tt_ptr_error(3) to extract one of the following Tt_status values from the returned handle:
TT_OK The operation completed successfully.
TT_ERR_NOMP
The ttsession(1) process is not running and the ToolTalk service cannot restart it.
APPLICATION USAGE
A zero value can occur if a message or pattern callback processes the message. It can also occur if the interval is too long between the
time the file descriptor became active and the tt_message_receive call was made. In the latter case, the ToolTalk service will time out
and offer the message to another process.
The application should use tt_free(3) to free any data stored in the address returned by the ToolTalk API.
SEE ALSO
Tt/tt_c.h - Tttt_c(5), tt_ptr_error(3), tt_free(3).
tt_message_receive(library call)
