HtmlWindow doesn't display images correctly

Question

So I have the following problem: HtmlWindow doesn't display the images from HTML files correctly. Instead of the actual image, a red pixelated X appears.

This is my code:

class OpenMail(Inbox):
    def __init__(self, parent, title):
        wx.Frame.__init__(self, None, title='Email')
        wx.InitAllImageHandlers()

        vbox = wx.BoxSizer(wx.HORIZONTAL)
        self.SetSizer(vbox)

        self.htmlwin = wx.html.HtmlWindow(self, style=wx.html.HW_SCROLLBAR_AUTO)
        vbox.Add(self.htmlwin, 1, wx.EXPAND)

    def openEmail2(self,x):
        self.htmlwin.LoadPage(x)

Example Html:

https://pastebin.com/GJJsyDY3

Rolf of Saxony · Accepted Answer

See: Output images to html using python I can't say whether what is said in that discussion is still valid but I have no reason to doubt it.
Since then wx.html2 which supports javascript and css has been added.

import wx
import wx.glcanvas as glcanvas
import wx.html2

class myGLCanvas(glcanvas.GLCanvas):
    def __init__(self, parent):
        glcanvas.GLCanvas.__init__(self, parent,-1)
        sizer = wx.BoxSizer(wx.VERTICAL)
        self.browser = wx.html2.WebView.New(self)
        sizer.Add(self.browser, 1, wx.EXPAND, 10)
        self.SetSizer(sizer)
        self.context = glcanvas.GLContext(self)
        self.browser.LoadURL("file:///home/rolf/d.html")

def main():
    app = wx.App()
    frame = wx.Frame(None,-1,'Web',wx.DefaultPosition,size=(800,800))
    canvas = myGLCanvas(frame)
    frame.Show()
    app.MainLoop()

if __name__ == '__main__':
    main()

or avoid the OpenGL support and simply use a wx.Frame as normal

import wx
import wx.html2

class TestFrame(wx.Frame):
    def __init__(self, *args, **kwargs):
        wx.Frame.__init__(self, *args, **kwargs)
        sizer = wx.BoxSizer(wx.VERTICAL)
        self.browser = wx.html2.WebView.New(self)
        sizer.Add(self.browser, 1, wx.EXPAND, 10)
        self.SetSizer(sizer)
        self.browser.LoadURL("file:///home/rolf/d.html")

def main():
    app = wx.App()
    frame = TestFrame(None,-1,'Web',wx.DefaultPosition,size=(800,800))
    frame.Show()
    app.MainLoop()

if __name__ == '__main__':
    main()

for testing purposes d.html contains your linked html code:

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