diff options
Diffstat (limited to 'src/gui/kernel/qwindow.cpp')
| -rw-r--r-- | src/gui/kernel/qwindow.cpp | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/src/gui/kernel/qwindow.cpp b/src/gui/kernel/qwindow.cpp index 18e8bcf99c..23e783fcb4 100644 --- a/src/gui/kernel/qwindow.cpp +++ b/src/gui/kernel/qwindow.cpp @@ -2175,11 +2175,14 @@ void QWindowPrivate::deliverUpdateRequest() Schedules a QEvent::UpdateRequest event to be delivered to this window. The event is delivered in sync with the display vsync on platforms - where this is possible. When driving animations, this function should - be called once after drawing has completed. - - Calling this function multiple times will result in a single event - being delivered to the window. + where this is possible. Otherwise, the event is delivered after a + delay of 5 ms. The additional time is there to give the event loop + a bit of idle time to gather system events, and can be overridden + using the QT_QPA_UPDATE_IDLE_TIME environment variable. + + When driving animations, this function should be called once after drawing + has completed. Calling this function multiple times will result in a single + event being delivered to the window. Subclasses of QWindow should reimplement event(), intercept the event and call the application's rendering code, then call the base class |