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Crash when accessing wx.stc.StyledTextCtrl.DropTarget.Data #2043

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komoto48g opened this issue Dec 4, 2021 · 5 comments · May be fixed by #2365
Open

Crash when accessing wx.stc.StyledTextCtrl.DropTarget.Data #2043

komoto48g opened this issue Dec 4, 2021 · 5 comments · May be fixed by #2365

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@komoto48g
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Operating system: Windows 10
wxPython version & source: 4.1.1 (pypi)
Python version & source: 3.8.6

Description of the problem: This bug is the direct cause of the previously opened issue #1959
Accessing the Data of wx.stc.StyledTextCtrl.DropTarget property will crash, but other properties are no problem.
I will raise this as a new issue and close #1959.

Code Example (click to expand) 
import wx
import wx.stc

app = wx.App()
frm = wx.Frame(None)
text = wx.stc.StyledTextCtrl(frm)
print("text.DropTarget =", text.DropTarget)
print("text.DropTarget.Data =", text.DropTarget.Data) # crash here
print("done")
@komoto48g komoto48g mentioned this issue Dec 4, 2021
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@swt2c
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swt2c commented Dec 4, 2021

Hmm. Possibly Windows-specific? I don't see on Linux. Does this happen on 4.0.7 for you also?

@komoto48g
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Thank you for checking this issue. This occurs also for wx 4.0.7 on Windows 10.
Seems like a Windows-specific DnD (shell extension) problem...

@swt2c
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swt2c commented Dec 5, 2021

Can you get a stacktrace for the crash?

@komoto48g
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komoto48g commented Dec 6, 2021 •
edited

No, unfortunately.
The error occurs inside the built-in method DropTarget.GetData or Data.
EDIT
When launched using switch python -Xdev -Xtracemalloc, it shows the message as follows:

Windows fatal exception: access violation

@RobinD42
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This issue has been mentioned on Discuss wxPython. There might be relevant details there:

https://discuss.wxpython.org/t/disabling-drag-and-drop-in-a-richtextctrl/35795/2

komoto48g added a commit to komoto48g/Phoenix that referenced this issue Dec 4, 2022
@komoto48g
Don't watch DropTarget
3f80bee 
    Windows bug fix
    wxWidgets#2043
@komoto48g komoto48g mentioned this issue Dec 4, 2022
Closed
komoto48g added a commit to komoto48g/Phoenix that referenced this issue Mar 22, 2023
@komoto48g
Don't watch DropTarget
1563d3e 
    Windows bug fix
    wxWidgets#2043
@komoto48g komoto48g linked a pull request Mar 22, 2023 that will close this issue
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Don't crush pie filling komoto48g/Phoenix
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@RobinD42 @swt2c @komoto48g