On 05/30/2008 10:31 PM, David Boddie wrote:
> I tried your code on three different X servers: the one I use on my display,
> another that's being used via VNC, and a third that is being displayed with
> Xephyr. The first two gave me this traceback:
>
>>>> app = QArgbApplication([])
> screen: 0
> eventBase: 0 errorBase: 180
> nvi: 0
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/home/dboddie/python/pastebin.ca-1034001.py", line 120, in __init__
> self.__visual = visual
> UnboundLocalError: local variable 'visual' referenced before assignment
This seems to be normal, that code does not handle correctly the case when
XRenderQueryExtension fails.
> The one used with Xephyr gave me this before terminated the Python process:
>
> screen: 0
> eventBase: 0 errorBase: 136
> nvi: 1
> visual = 0x08277a48, colormap = 0x00e00001
> ext_data None visualid 57 c_class 4 red_mask 16711680 green_mask 65280
blue_mask 255 bits_per_rgb 8 map_entries 256
> Found ARGB visual, starting app...
> Alarm clock
Could you please test again with the following snippet and commenting out line
#132 from the paste (setting the self-destruction alarm):
from qargb import QArgbApplication
from PyQt4.QtGui import QMainWindow
app = QArgbApplication()
mw = QMainWindow()
mw.show()
app.exec_()
If it draws a window without any complaints on your system this seems to be a
PyQt bug :(
> I have no idea whether your code is doing all the right things with Xlib.
> For testing purposes, I just assumed that it is, but I think you may need to
> ask a Python Xlib guru. (Maybe there are a few reading this list.)
Well, this code is a straightforward translation of sources from
svn://labs.trolltech.com/svn/graphics/dojo/argb so everything seems to be fine
from the Xlib side. Either I've done something wrong with types conversions or
this is a bug.
--
Lev.
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