Re: Limited JavaScript functionality in MSW with wx.html2

I received the following message in my email, but doesn't appear to be 
actually posted?

Check that IE is v.11 and use registry to set compatibility mode to IE 11.
>
> Niki


I have done that, but it does not enable all of the JS features apparently, 
below is the code I use to accomplish that.  If my application user is on 
windows, I call set_ie_emulation_level and set_ie_lockdown_level. Now it's 
possible the IE emulator simply has some JS issues I can't overcome and 
perhaps the loaded javascript itself needs to be changed?  But I'd need the 
JS console output to figure that out.

I have posted on wx-users (topic: Limited JavaScript functionality in MSW 
with wx.html2), but no advice posted yet.
https://groups.google.com/forum/#!topic/wx-users/6sy4AFl_xHY


import winreg
import sys
from os.path import basename


def set_reg(name, reg_path, value):
    try:
        winreg.CreateKey(winreg.HKEY_CURRENT_USER, reg_path)
        registry_key = winreg.OpenKey(winreg.HKEY_CURRENT_USER, reg_path, 0, winreg.KEY_WRITE)
        winreg.SetValueEx(registry_key, name, 0, winreg.REG_DWORD, value)
        winreg.CloseKey(registry_key)
        return True
    except WindowsError:
        return False

def set_ie_emulation_level(value=11001):
    # See this site for information on which values to use
    # https://docs.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/general-info/ee330730(v=vs.85)#browser_emulation
    reg_path = r"Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION"
    set_reg(basename(sys.executable), reg_path, value)


def set_ie_lockdown_level(value=0):
    # Based on info from Venkatakrishnan at
    # https://stackoverflow.com/questions/44513580/powershell-how-to-allow-blocked-content-in-internet-explorer/44514051
    reg_path = r"Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_LOCALMACHINE_LOCKDOWN"
    set_reg(basename(sys.executable), reg_path, value)




On Friday, January 31, 2020 at 4:38:30 PM UTC-6, Dan Cutright wrote:
>
> Thank for your quick reply Scott!
>
> I've noticed the Edge-based webview as well, but looked like it was a bit 
> more involved to get it working.  And since I'll also need to run this 
> through PyInstaller, I was hoping to avoid it if possible since that might 
> open up another can of worms.
>
> I'll be sure to give the webview sample a shot and follow-up on wxWidgets 
> mailing list.
>
> On Friday, January 31, 2020 at 3:51:13 PM UTC-6, Scott Talbert wrote:
>>
>> On Fri, 31 Jan 2020, Dan Cutright wrote: 
>>
>> > I'm having trouble getting wx.html2 on MSW with IE backend to function 
>> > properly.  I've posted this issue on wxWidgets/Phoenix 
>> > (https://github.com/wxWidgets/Phoenix/issues/1319) back in August, but 
>> I've 
>> > yet to get a reply. 
>> > I'm using Bokeh to generate html files to be loaded into a wx.html2 
>> object. 
>> > Everything works fine on Mac and GTK, but MSW is missing some 
>> functionality 
>> > (e.g., cannot drag the plot, draw a box to zoom, or toggle figure 
>> legend 
>> > items).  There is a summary of some things I've tried in the linked 
>> GitHub 
>> > issue above, involving Windows registry or adding "mark of the 
>> internet"... 
>> > but no dice.  Below is a link to an example html file that works 
>> perfectly 
>> > fine when loading with IE directly. 
>> > 
>> > Has anyone else come across this issue?  Is there a work-around, or is 
>> this 
>> > just a bug? 
>> > 
>> > Does anyone know how to get a JS console readout from wx.html2?  Maybe 
>> > there's something about the bokeh generated html file that Bokeh could 
>> help 
>> > me with. 
>>
>> wxPython is (mostly) just a Python binding of the wxWidgets C++ library 
>> and wx.html2 is the Python binding for the wxWebView class of wxWidgets. 
>> As such, you may want to ask for help on the wxWidgets mailing lists as 
>> there may be more expertise there. 
>>
>> You could also try loading your page in the wxWidgets webview sample and 
>> see if it produces any errors there? 
>>
>> Additionally, I know there has been some recent work in wxWidgets on 
>> getting an Edge-based Webview backend supported.  I don't know the exact 
>> status of this, and it may take some time to get enabled in wxPython, but 
>> it may be a possibility down the road. 
>>
>> Scott
>
>

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