From c9f375f4e3d90e1296d8159f98f003c7570f902f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Morten=20Johan=20S=C3=B8rvig?= Date: Tue, 25 Sep 2018 13:37:20 +0200 Subject: Document QScreen::grabWindow high-DPI behavior MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change-Id: Ib32510ff30e907365e64921fda14e686a495c77c Reviewed-by: Tor Arne Vestbø --- src/gui/kernel/qscreen.cpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/gui/kernel/qscreen.cpp b/src/gui/kernel/qscreen.cpp index 0ff439abea..f208eb02be 100644 --- a/src/gui/kernel/qscreen.cpp +++ b/src/gui/kernel/qscreen.cpp @@ -701,6 +701,11 @@ void QScreenPrivate::updatePrimaryOrientation() border of the window. If \a height is negative, the function copies everything to the bottom of the window. + The offset and size arguments are specified in device independent + pixels. The returned pixmap may be larger than the requested size + when grabbing from a high-DPI screen. Call QPixmap::devicePixelRatio() + to determine if this is the case. + The window system identifier (\c WId) can be retrieved using the QWidget::winId() function. The rationale for using a window identifier and not a QWidget, is to enable grabbing of windows -- cgit v1.2.3