wxPython 4.1.1, InitBuffer() error

[univox360]

I find the following issues on python 3.6 with wxPython 4.1.1

Your basic slm code:

`
import slmpy

import time

import numpy as np

slm = slmpy.SLMdisplay()

resX, resY = slm.getSize()

X, Y = np.meshgrid(np.linspace(0, resX, resX), np.linspace(0, resY, resY))
testIMG = np.round((2 ** 8 - 1) * (0.5 + 0.5 * np.sin(2 * np.pi * X / 50))).astype('uint8')

slm.updateArray(testIMG)

slm.close()
`

Gives the following error:

C:\Users\labuser\Miniconda3\python.exe C:/Users/labuser/PycharmProjects/opticalcompute/slmtest.py
C:\Users\labuser\PycharmProjects\opticalcompute\slmPy-master\slmpy.py:40: wxPyDeprecationWarning: Call to deprecated item EmptyImage. Use :class:Image instead.
self.img = wx.EmptyImage(2,2)
Traceback (most recent call last):
File "C:\Users\labuser\PycharmProjects\opticalcompute\slmPy-master\slmpy.py", line 59, in UpdateImage
self.InitBuffer()
File "C:\Users\labuser\PycharmProjects\opticalcompute\slmPy-master\slmpy.py", line 50, in InitBuffer
self.clientSize = self.GetClientSize()
RuntimeError: wrapped C/C++ object of type SLMframe has been deleted
Process finished with exit code -1073741819 (0xC0000005)

Fixing the depcrecation issue wx.EmptyImage(2,2) -> wx.Image(2,2) in "slmpy.py" stil gives:

C:\Users\labuser\Miniconda3\python.exe C:/Users/labuser/PycharmProjects/opticalcompute/slmtest.py
Traceback (most recent call last):
File "C:\Users\labuser\PycharmProjects\opticalcompute\slmPy-master\slmpy.py", line 59, in UpdateImage
self.InitBuffer()
File "C:\Users\labuser\PycharmProjects\opticalcompute\slmPy-master\slmpy.py", line 52, in InitBuffer
dc = wx.ClientDC(self)
RuntimeError: wrapped C/C++ object of type SLMframe has been deleted

Process finished with exit code -1073741819 (0xC0000005)

I am not too experienced with python or wxPython, so maybe the solution is obvious. Thanks.

-Elliot

[wavefrontshaping]

Hi Elliot,

It seems that the deprecation warning has nothing to do with the actual error.
I have Python 3.8 and wxPython 4.1.1, I have the warning, but it sill works correctly without error.
I cannot reproduce the error on my computer but I will investigate.
Can you try on Python 3.8?

[wavefrontshaping]

OK, I pushed a modification, what does it do?

[univox360]

Thank you very much. I will try to test today. -Elliot

…

On Thu, Jan 28, 2021 at 11:40 PM Sébastien M. P. ***@***.***> wrote: OK, I pushed a modification, what does it do? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#1 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AFM6ZUCZHYTCFQRQTJZAIC3S4JQ57ANCNFSM4WVZJ2HQ> .

-- -Elliot

[univox360]

Sorry, got a bit delayed.

I tested on python 3.8 and wxPython 4.1.1

I get the very same error:

Traceback (most recent call last):
File "C:\Users\ejfull\PycharmProjects\pythonProject1\slmPy-master\slmpy.py", line 59, in UpdateImage
self.InitBuffer()
File "C:\Users\ejfull\PycharmProjects\pythonProject1\slmPy-master\slmpy.py", line 52, in InitBuffer
dc = wx.ClientDC(self)
RuntimeError: wrapped C/C++ object of type SLMframe has been deleted

Process finished with exit code -1073741819 (0xC0000005)

[wavefrontshaping]

I cannot make sense of it.
Upon calling InitBuffer, it says SLMframe does not exist anymore, but it happens inside the SLMframe object...
Not having the possibility to reproduce the error, I do not see how I can fix it right now.
Sorry but I have no answer...

[wavefrontshaping]

Hi rewrote a big chunk of the code, could you try again?