diff options
| author | Tim Blechmann <tim@klingt.org> | 2016-02-29 19:47:57 +0800 |
|---|---|---|
| committer | Tim Blechmann <tim@klingt.org> | 2016-03-01 09:20:31 +0000 |
| commit | c2530c7d2005ec734cc310d9122b0bf135120444 (patch) | |
| tree | 92545409312830468148c86fa8b5b53825b5569a /src | |
| parent | d7d4a3ecfc9da82c04c3a217fdfee0324f4ad9fa (diff) | |
Windows QPA: QWindowsWindow - always treat WM_ERASEBKGND as handled
under certain conditions, a WM_ERASEBKGND message is sent, to a window
without update region. in this case we declare the message as 'handled'
to avoid flickering.
Task-number: QTBUG-48235
Change-Id: I2ed27e020db4b54ec93a445cb219de00f38a62fd
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/plugins/platforms/windows/qwindowswindow.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/plugins/platforms/windows/qwindowswindow.cpp b/src/plugins/platforms/windows/qwindowswindow.cpp index c0892feabe..e640d38241 100644 --- a/src/plugins/platforms/windows/qwindowswindow.cpp +++ b/src/plugins/platforms/windows/qwindowswindow.cpp @@ -1559,11 +1559,11 @@ void QWindowsWindow::releaseDC() bool QWindowsWindow::handleWmPaint(HWND hwnd, UINT message, WPARAM, LPARAM) { + if (message == WM_ERASEBKGND) // Backing store - ignored. + return true; // Ignore invalid update bounding rectangles if (!GetUpdateRect(m_data.hwnd, 0, FALSE)) return false; - if (message == WM_ERASEBKGND) // Backing store - ignored. - return true; PAINTSTRUCT ps; // Observed painting problems with Aero style disabled (QTBUG-7865). |