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author | Liang Qi <liang.qi@qt.io> | 2019-01-28 19:30:32 +0000 |
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committer | The Qt Project <gerrit-noreply@qt-project.org> | 2019-01-28 19:30:32 +0000 |
commit | e3621dd6bd32a64e602ae87711c24d6aae2989b5 (patch) | |
tree | c4539c9aa6b1a4b9a4e88ef5caef4bd3e29c7b41 /src/gui/kernel/qhighdpiscaling.cpp | |
parent | 71cd5a6f3643a5369b883d0e36478693de6db024 (diff) | |
parent | 980567b3a32b2e2f00c86f2d627cd82b5230dd0f (diff) |
Merge "Merge remote-tracking branch 'origin/5.12' into dev" into refs/staging/dev
Diffstat (limited to 'src/gui/kernel/qhighdpiscaling.cpp')
-rw-r--r-- | src/gui/kernel/qhighdpiscaling.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/gui/kernel/qhighdpiscaling.cpp b/src/gui/kernel/qhighdpiscaling.cpp index a455aa639d..22e46e0851 100644 --- a/src/gui/kernel/qhighdpiscaling.cpp +++ b/src/gui/kernel/qhighdpiscaling.cpp @@ -313,9 +313,12 @@ void QHighDpiScaling::updateHighDpiScaling() } m_active = m_globalScalingActive || m_screenFactorSet || m_pixelDensityScalingActive; - QPlatformScreen *primaryScreen = QGuiApplication::primaryScreen()->handle(); - qreal sf = screenSubfactor(primaryScreen); - QDpi primaryDpi = primaryScreen->logicalDpi(); + QScreen *primaryScreen = QGuiApplication::primaryScreen(); + if (!primaryScreen) + return; + QPlatformScreen *platformScreen = primaryScreen->handle(); + qreal sf = screenSubfactor(platformScreen); + QDpi primaryDpi = platformScreen->logicalDpi(); m_logicalDpi = QDpi(primaryDpi.first / sf, primaryDpi.second / sf); } |