Skip to content

Adjust high DPI scaling handling for Qt 6 to avoid deprecation warning #116

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Sep 23, 2025
Merged

Adjust high DPI scaling handling for Qt 6 to avoid deprecation warning #116

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
93cbcb7
Adjust high DPI scaling handling for Qt 6 to avoid deprecation warning
hmaarrfk Sep 20, 2025
6bfd548
Delete rendercanvas/fastapi.py
hmaarrfk Sep 23, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 5 additions & 1 deletion rendercanvas/qt.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -159,7 +159,11 @@ def enable_hidpi():
except Exception:
pass # fail on non-windows
try:
QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling, True)
# https://doc.qt.io/qtforpython-6/faq/porting_from2.html#class-function-deprecations
# > High DPI is by default enabled in Qt 6 and cannot be turned off.
dpi_scaling_not_deprecated = qt_version_info[0] < 6
if dpi_scaling_not_deprecated:
QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling, True)
except Exception:
pass # fail on older Qt's

Expand Down