MACROMEDIA FLASH 8-USING FLASH, Руководство пользователя, Страница: 539 / 678

Starting a print job 539
Starting a print job
Calling the
PrintJob.start()
method prompts Flash Player to spool the print job to the
user’s operating system and also prompts the user’s operating system print dialog box to
appear.
If the user selects an option in the print dialog box to begin printing, the
PrintJob.start(
)
method returns a value of
true
. (The value is
false
if the user cancels the print job, in which
case the script should call only
delete
). If successful, the
PrintJob.start()
method sets
values for the
paperHeight
,
paperWidth
,
pageHeight
,
pageWidth
, and
orientation
properties.
Depending on the user’s operating system, an additional dialog box might appear until
spooling is complete and the function
PrintJob.send
is called: Calls to
PrintJob.addPage()
and
PrintJob.send()
should be made expeditiously. If ten seconds
elapse between the
PrintJob.start()
function call and the
PrintJob.send()
function
call, which sends the print job to the printer, Flash Player effectively calls
PrintJob.send()
,
causing any pages that are added using
PrintJob.addPage()
to be printed and spooling to
stop.
When a new print job is constructed, the
PrintJob()
properties are initialized to 0. When
PrintJob.start()
is called, after the user selects the print option in the operating system
print dialog box, Flash Player retrieves the print settings from the operating system. The
PrintJob.start()
function populates the following properties:
Property Type Unit Notes
PrintJob.paperHeight
number points Overall paper height.
PrintJob.paperWidth
number points Overall paper width
PrintJob.pageHeight
number points Height of actual printable area on the
page; does not include any user-set
margins
PrintJob.pageWidth
number points Width of actual printable area on the
page; does not include any user-set
margins
PrintJob.orientation
string n/a Portrait or landscape orientation
NO
T
E
A point is a print unit of measurement that is equal in size to one pixel, a screen unit of
measure. For more information about unit equivalencies, see
“About scaling”
on page 541 .