Type: info
Title: SystemWindow::EnableSaveBackground changes behaviour
Posted by: [EMAIL PROTECTED]
Affected: vcl
TaskId: i88865
<http://www.openoffice.org/issues/show_bug.cgi?id=88865>
Effective from: CWS aquavcl07
*Summary*
--------
SystemWindow::EnableSaveBackground is system dependent now
*Description*
-------------
SystemWindow::EnableSaveBackground enables a vcl mechanism where a
system window when shown saves the window contents of the parent it
will overlap. When the SystemWindow gets hidden again the parent
window content gets restored from the saved buffer. This behaviour is
e.g. enabled for help text windows, menus and dropdown lists.
On Mac windows are drawn from a background buffer anyway, so saving
and restoring it unto itself will not help. Therefore
EnableSaveBackground now changes meaning from "save the background of
this window" to "save the background of this window if appropriate on
the current platform".
Since outside vcl there are no customers for this function (except the
long since deceased sip module), this change is FYI only.
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