QT5: An error occurs when moving the mouse over the edit box.

[hwf1324]

Steps to reproduce:

1. Create a virtual environment for Python and install PyQt5 using pip.
2. Run the demo code.
3. With mouse tracking turned on, move the mouse over the blank area in the edit box.

Demo Code:

import sys

from PyQt5.QtWidgets import (
    QApplication,
    QFormLayout,
    QLineEdit,
    QTextEdit,
    QPlainTextEdit,
    QWidget,
)

app = QApplication([])
window = QWidget()
window.setWindowTitle("Text Editor")

layout = QFormLayout()
layout.addRow("LineEdit:", QLineEdit())
layout.addRow("TextEdit:", QTextEdit())
layout.addRow("PlainTextEdit:", QPlainTextEdit())
window.setLayout(layout)

window.show()
sys.exit(app.exec())

Actual behavior:

Error in the log.

Expected behavior:

No errors.

NVDA logs, crash dumps and other attachments:

ERROR - eventHandler.executeEvent (19:51:39.831) - MainThread (6672):
error executing event: mouseMove on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionUIA object at 0x05D30330> with extra args of {'x': 1589, 'y': 1549}
Traceback (most recent call last):
  File "eventHandler.pyc", line 353, in executeEvent
  File "eventHandler.pyc", line 119, in __init__
  File "eventHandler.pyc", line 128, in next
  File "NVDAObjects\__init__.pyc", line 1293, in event_mouseMove
  File "api.pyc", line 275, in setReviewPosition
  File "NVDAObjects\UIA\__init__.pyc", line 1086, in copy
  File "NVDAObjects\UIA\__init__.pyc", line 527, in __init__
ValueError: Unknown position None

System configuration

NVDA installed/portable/running from source:

install

NVDA version:

alpha-35291,e2d464f5 (2025.1.0.35291)

Windows version:

Windows 11 24H2

Name and version of other software in use when reproducing the issue:

QT5

Other information about your system:

Other questions

Does the issue still occur after restarting your computer?

Yes

Have you tried any other versions of NVDA? If so, please report their behaviors.

Yes

If NVDA add-ons are disabled, is your problem still occurring?

Yes

Does the issue still occur after you run the COM Registration Fixing Tool in NVDA's tools menu?

Yes

[SaschaCowley]

@hwf1324 what is the user impact of this issue? That is, does NVDA fail to report what is under the mouse?

[hwf1324]

what is the user impact of this issue?

When this error occurs, the review cursor will not follow the mouse