<![CDATA[QListView ignoring ScrollPerPixel on Sierra, High Sierra (Qt-5.12.0)]]>Hi there!

This simple pyqt example demonstrates the problem:

import time

app = QApplication(sys.argv)

w = QListView()
m = QStringListModel()
m.setStringList([str(time.time()) for i in range(1000)])
w.setModel(m)
w.setVerticalScrollMode(QAbstractItemView.ScrollPerPixel)
w.show()

app.exec_()
]]>https://forum.qt.io/topic/99791/qlistview-ignoring-scrollperpixel-on-sierra-high-sierra-qt-5-12-0RSS for NodeSun, 19 Apr 2026 19:07:33 GMTSun, 17 Feb 2019 18:46:39 GMT60<![CDATA[Reply to QListView ignoring ScrollPerPixel on Sierra, High Sierra (Qt-5.12.0) on Fri, 22 Feb 2019 00:05:02 GMT]]>@patrickkidd Turns out this is only doing this when macOS is a parallels guest OS, even for Mojave. Strange.

I wonder what this could be?

]]>https://forum.qt.io/post/513189https://forum.qt.io/post/513189Fri, 22 Feb 2019 00:05:02 GMT<![CDATA[Reply to QListView ignoring ScrollPerPixel on Sierra, High Sierra (Qt-5.12.0) on Thu, 21 Feb 2019 22:29:44 GMT]]>It looks like all QScrollAreas ignore ScrollPerPixel on Sierra. How is this possible?

]]>https://forum.qt.io/post/513178https://forum.qt.io/post/513178Thu, 21 Feb 2019 22:29:44 GMT<![CDATA[Reply to QListView ignoring ScrollPerPixel on Sierra, High Sierra (Qt-5.12.0) on Sun, 17 Feb 2019 19:46:54 GMT]]>gotcha. not sure about MAC compatibility.

]]>https://forum.qt.io/post/512059https://forum.qt.io/post/512059Sun, 17 Feb 2019 19:46:54 GMT<![CDATA[Reply to QListView ignoring ScrollPerPixel on Sierra, High Sierra (Qt-5.12.0) on Sun, 17 Feb 2019 19:42:54 GMT]]>@Kent-Dorfman You are running linux. The report is that it doesn't work on Sierra, High Sierra. It works fine on Mojave, for example.

]]>https://forum.qt.io/post/512058https://forum.qt.io/post/512058Sun, 17 Feb 2019 19:42:54 GMT<![CDATA[Reply to QListView ignoring ScrollPerPixel on Sierra, High Sierra (Qt-5.12.0) on Sun, 17 Feb 2019 19:41:40 GMT]]>at least on 5.11 partial (pixel specific) scrolling does seem to work.

just ran it and behaved as expected.

Fedora29 linux
Qt 5.11

]]>https://forum.qt.io/post/512057https://forum.qt.io/post/512057Sun, 17 Feb 2019 19:41:40 GMT<![CDATA[Reply to QListView ignoring ScrollPerPixel on Sierra, High Sierra (Qt-5.12.0) on Sun, 17 Feb 2019 19:36:48 GMT]]>Thank you. Here is all of it:

import sys, time

from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *

app = QApplication(sys.argv)

w = QListView()
m = QStringListModel()
m.setStringList([str(time.time()) for i in range(1000)])
w.setModel(m)
w.setVerticalScrollMode(QAbstractItemView.ScrollPerPixel)
w.show()

app.exec_()
]]>https://forum.qt.io/post/512056https://forum.qt.io/post/512056Sun, 17 Feb 2019 19:36:48 GMT<![CDATA[Reply to QListView ignoring ScrollPerPixel on Sierra, High Sierra (Qt-5.12.0) on Sun, 17 Feb 2019 19:35:19 GMT]]>No it doesn't. Where are your imports for the Qt framework? I've become a lot more demanding lately of examples incuding the necessary imports, instead of assuming folks know where all the components come from. It saves the respondent time, so think of it as a courtesy.

TIA

]]>https://forum.qt.io/post/512055https://forum.qt.io/post/512055Sun, 17 Feb 2019 19:35:19 GMT