DirectWrite: CreateFontFaceFromHDC() failed

[hjroyal]

1. Environment :

• OS: [Windows11]
• backend: [PyQt5 5.11.5]
• magicgui version [0.8.3]
• python 3.11.5

2. Problem: I followed the tutorial on the official website and tried to run the following example code to get an error.

DirectWrite: CreateFontFaceFromHDC() failed (指示输入文件 (例如字体文件) 中的错误。) for QFontDef(Family="MS Sans Serif", pointsize=12, pixelsize=16, styleHint=5, weight=400, stretch=100, hintingPreference=0) LOGFONT("MS Sans Serif", lfWidth=0, lfHeight=-16) dpi=96

# test.py

import matplotlib.pyplot as plt
import numpy as np
from matplotlib.backends.backend_qt5agg import FigureCanvas

from magicgui import magicgui

x = np.linspace(0, 5, 256)
y = np.linspace(0, 5, 256)[:, np.newaxis]
data = np.sin(x) ** 10 + np.cos(10 + y * x) * np.cos(x)

mpl_fig = plt.figure()
ax = mpl_fig.add_subplot(111)
(line,) = ax.plot(data[123])  # linescan through the middle of the image

@magicgui(position={"widget_type": "Slider", "max": 255}, auto_call=True)
def f(position: int):
    """Function demonstrating magicgui combined with matplotlib."""
    line.set_ydata(data[position])
    line.figure.canvas.draw()

# rather than using the Container.append (`f.append`) ...
# grab the native layout and add the QWidget to it
f.native.layout().addWidget(FigureCanvas(mpl_fig))

f.show(run=True)

3. Actions: pip install magicgui pip install PyQt5 run test.py

[tlambert03]

hi @hjroyal, it's hard to tell what this issue is. is this a bug report? if so, please tell me what code you ran to get this error, and if that DirectWrite line is an exception you received, please give the full traceback

[hjroyal]

Yes. Thank you for your reply. I updated my question and I guess it's a Windows 11 problem.

[tlambert03]

thank you. Ultimately, this is likely to be a broader Qt problem for you, and not a magicgui issue. However, if you can give me the full error message, including the traceback (i.e. NOT just the bit including DirectWrite: CreateFontFaceFromHDC() ... but rather the entire error message, including file names and line numbers) I might be help a bit more

[hanjinliu]

@hjroyal I think it's a windows x Qt issue. It's not an error but a log output by Qt at C++ level.

[tlambert03]

It's not an error but a log output by Qt at C++ level.

ahh, is that true @hjroyal? Does the example otherwise work? You're just seeing this printed to your console?