How to distinguish paint events

[naruto_9w]

Hi all,

When i override the paintEvent of QWebView which inherts QWidget, i found that the paintEvent was consecutively called twice before the widget is shown on screen.
So my question is how to distinguish these two events, anybody help? Thanks!

Btw, i found the first event drawing the background, while the second rendering DOM elements of the webpage, using the same paintEvent.

[wysota]

Why would you want to distinguish those paint events?

[naruto_9w]

Why would you want to distinguish those paint events?

I wanna get the DOM painting and call *setMask* method in the second paint event to create a web view with transparent background on screen.

The story is told in this thread (http://www.qtcentre.org/forum/f-qt-programming-2/t-qwebview-transparent-problem-18037.html). Thanks!

[wysota]

Don't do that. PaintEvent is for painting and painting only. If you need to do anything else, do it elsewhere (in showEvent() maybe?).

[naruto_9w]

Don't do that. PaintEvent is for painting and painting only. If you need to do anything else, do it elsewhere (in showEvent() maybe?).

I know that is a not elegant way, but how to catch the exact painting contents of webpage if do not hack the paint event, showEvent is invoked before these two paint event, and *frame->render(...)* is called in paintEvent, but during my step-by-step debugging, i tried in vain to find the reason why paintEvent are called twice from the call stack, any hints for that? Thanks.

[wysota]

I know that is a not elegant way, but how to catch the exact painting contents of webpage if do not hack the paint event
By calling QWidget::render().

[Uwe]

I didn't read everything carefully, but isn't handling QEvent::PolishRequest the intended way to initialize your content.

Uwe