[PyQt] Windows OpenGL errors

[michael h]

On Sun, Aug 13, 2017 at 1:13 AM, Simon, Stuart A. <ssimo3 at lsuhsc.edu> wrote:

> Can I tell any C++ compiler to look for the Qt executable bundled with
> PyQt? Where is said executable within the structure of the Python of the
> installation, relative to the folder that contains python.exe?
>


What do you mean by "Qt executable" (do you just mean the library dlls?)
and what are you compiling?


> I would like to debug my JavaScript to tell you more. But for that, I
need you to implement the global function entitled “qputenv.” Once that is
done, I can call

You could set the environment variable using other means (perhaps just
through the command line)?


> ________________________________________
> > Dear PyQt Users:
> > I'm a novice developer in the area of desktop apps, but a veteran in the
> world of Web development. I have yet to find in the world of GUI
> programming something as intuitive as HTML and JavaScript, Bootstrap and
> AngularJS. That being said, I have been tasked with creating an application
> whose raison d'​être is to be redistributable and have each copy modify its
> own data. I need to be able to redistribute this to an unknown but small
> number of my coworkers who will each populate a database as they see fit.
> When all is finished, I will collect the data back from them to gather
> information for a report that my department chair will write.
> >
> > I want to use a thin wrapper such as QtWebEngine on a Web GUI that makes
> use of AngularJS and Bootstrap to lay itself out. My application is running
> fine on a Mac, including using qt.webChannelTransport and waiting to
> bootstrap the Angular application until called inside the QtWebChannel init
> callback. But my application is not working on Windows 7, where I am
> getting OpenGL error after OpenGL error. The callback is being fired, but
> it has no access to either console (for debugging) or to the “objects”
> property of the “channel” object passed as an argument to the callback. It
> is as though the argument is not being passed to the callback at all.
>


This doesn't directly help you with your issue but have you considered
Electron or NW.js (or something along those lines) ? Qt and python seems to
be extra layers you don't need (or want?).



- Michael

On Sun, Aug 13, 2017 at 1:13 AM, Simon, Stuart A. <ssimo3 at lsuhsc.edu> wrote:

> Can I tell any C++ compiler to look for the Qt executable bundled with
> PyQt? Where is said executable within the structure of the Python of the
> installation, relative to the folder that contains python.exe?
> ________________________________________
> From: Phil Thompson <phil at riverbankcomputing.com>
> Sent: Saturday, August 12, 2017 3:09:56 AM
> To: Simon, Stuart A.
> Cc: pyqt at riverbankcomputing.com
> Subject: Re: [PyQt] Windows OpenGL errors
>
> *EXTERNAL EMAIL: EVALUATE*
>
> On 12 Aug 2017, at 2:46 am, Simon, Stuart A. <ssimo3 at lsuhsc.edu> wrote:
> >
> > ​Hello!
> > I am not sure why this message is not in the archives. I assume that it
> was not sent because I was not a member of the mailing list at the time. I
> very consciously chose not to subscribe because of all the mass mailings I
> get that are off-topic. I expected that I would have received an ACCESS
> DENIED message (or something similar) in my inbox. Be that as it may, I
> subscribed reluctantly. Many more recent conversations than this one are in
> the archive now.
> >
> > In a nutshell: I am getting LOTS of OpenGL errors on Windows when I try
> to use QtWebEngine on Windows, too many and too redundant for a screenshot.
> I've VERY consciously appealed this problem to the PyQt developers first,
> even though there are fewer of them than those who work with Qt/C++. Why? I
> have good reason to suspect that the PyQt developers were so eager to rush
> out compliance with Qt with respect to the implementation of QtWebEngine
> and the deprecation of QtWebKit that they were unaware that the
> QtDevelopers were running ahead at the same pace. Qt 5.4 was the first to
> use a dynamic OpenGL implementation, which loads ANGLE only as a fallback.
> I suspect that PyQt may still be using ANGLE by default, and I want to
> determine if it is being used and, if so, disable it. And for that, I need
> to know where Qt itself resides in the PyQt structure, if anywhere.
> >
> > Hopefully this will go out, and people won't think it's too long. I
> myself fear that if I am too brief, I am unclear.
>
> PyQt knows nothing about the OpenGL implementation used by Qt, ANGLE or
> otherwise.
>
> You might want to try getting the relevant Qt C++ examples working with
> your setup.
>
> Phil
>
> > From: Simon, Stuart A.
> > Sent: Monday, August 7, 2017 11:07 AM
> > To: pyqt at riverbankcomputing.com
> > Subject: Windows OpenGL errors
> >
> > Dear PyQt Users:
> > I'm a novice developer in the area of desktop apps, but a veteran in the
> world of Web development. I have yet to find in the world of GUI
> programming something as intuitive as HTML and JavaScript, Bootstrap and
> AngularJS. That being said, I have been tasked with creating an application
> whose raison d'​être is to be redistributable and have each copy modify its
> own data. I need to be able to redistribute this to an unknown but small
> number of my coworkers who will each populate a database as they see fit.
> When all is finished, I will collect the data back from them to gather
> information for a report that my department chair will write.
> >
> > I want to use a thin wrapper such as QtWebEngine on a Web GUI that makes
> use of AngularJS and Bootstrap to lay itself out. My application is running
> fine on a Mac, including using qt.webChannelTransport and waiting to
> bootstrap the Angular application until called inside the QtWebChannel init
> callback. But my application is not working on Windows 7, where I am
> getting OpenGL error after OpenGL error. The callback is being fired, but
> it has no access to either console (for debugging) or to the “objects”
> property of the “channel” object passed as an argument to the callback. It
> is as though the argument is not being passed to the callback at all.
> >
> > As far as I can tell, I am using OpenGL_ES.
> >
> > I would like to debug my JavaScript to tell you more. But for that, I
> need you to implement the global function entitled “qputenv.” Once that is
> done, I can call
> >
> > qputenv(“QTWEBENGINE_REMOTE_DEBUGGING”, 12345)
> >
> > and then I will get the Chrome Dev Tools at http://localhost:12345.
> >
> > I am trying to switch to cefpython. But that comes with its own set of
> problems in using py2exe, pyinstaller, and cx_freeze. I want to distribute
> my app to a few people who will need it but who themselves do not have
> Python.
> >
> > Stuart Simon
> > Graphics Specialist
> > LSU Human Development Center
> > 411 S Prieur St
> > New Orleans, LA  70112
> > http://www.hdc.lsuhsc.edu/
> >
> > _______________________________________________
> > PyQt mailing list    PyQt at riverbankcomputing.com
> > https://www.riverbankcomputing.com/mailman/listinfo/pyqt
>
> _______________________________________________
> PyQt mailing list    PyQt at riverbankcomputing.com
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>
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