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Re: How to block background redrawing in my own widget [message #47012 is a reply to message #47007]

Fri, 28 October 2016 14:01

Zbych
Messages: 326
Registered: July 2009

Senior Member

Thanks for explanation.

Right now I override State(int reason) function from Ctrl and when size or position is changed I call Layout function to set everything:
https://github.com/ultimatepp/mirror/blob/master/bazaar/Chro miumBrowser/ChromiumBrowser.cpp

Windows code responsible for chrome position and size looks like this (flickering visible):

		CefWindowHandle hwnd = handler->GetBrowser()->GetHost()->GetWindowHandle();
		HDWP hdwp = BeginDeferWindowPos(1);
		hdwp = DeferWindowPos(hdwp, hwnd, nullptr, r.left, r.top, r.Width(), r.Height(), SWP_NOZORDER);
		EndDeferWindowPos(hdwp);

Or second version (flickering visible):

		SetWindowPos(hwnd, NULL, r.left, r.top, r.GetWidth(), r.GetHeight(), SWP_NOZORDER);

In third version I disabled it completely, so chrome doesn't change its size when I resize application window, but flickering is still visible.
The funny thing is, that with X11 backend flickering is not visible.

[Updated on: Fri, 28 October 2016 14:28]

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