Re: PangoWarning: failed to choose a font with 'PangoRenderWin32' renderer

[Behdad Esfahbod <behdad behdad org>]

Hi,

I don't know how to help except for suggesting that you compile pango yourself
and dig into debugging, but guess you already knew that.

behdad

On 03/11/11 09:06, Andreas Sommer wrote:
> Hi all,
> 
> I have been facing this problem with font rendering in multiple PyGTK-based
> programs now and finally want to find out what the real problem is.
> 
> Using the most recent PyGTK all-in-one installer, I get the following warning:
> 
> C:\Projects\Site Deploy\site_deploy\frontend\gui.py:126: PangoWarning: failed
> to choose a font, expect ugly output. engine-type='PangoRenderWin32',
> script='latin'
>   self._mainWindow.show()
> C:\Projects\Site Deploy\site_deploy\frontend\gui.py:126: PangoWarning: failed
> to choose a font, expect ugly output. engine-type='PangoRenderWin32',
> script='common'
>   self._mainWindow.show()
> 
> All text glyphs are then rendered as rectangles. This also happens the older
> versions of GTK+, pycairo, pygtk, pygobject. No problem on Ubuntu. Creating a
> new "pango.modules" file with pango-querymodules.exe does not help (suggested
> in some forums, but modules are built into DLLs on Windows, anyway).
> 
> Today I created a fresh Windows XP installation in VirtualBox. Installed
> Python 2.6, PyGTK all-in-one, and it worked. Just in very few cases, when
> starting the program for the first time after booting, it shows the same font
> rendering problem. Changing the locale to German also did not trigger the
> problem. Copying all fonts from my host to the VM also did not trigger it.
> 
> I'm kind of lost right now, why am I having problems on my host Windows?
> GTK_HOME is correctly set to the PyGTK all-in-one GTK+ runtime, and PATH does
> not contain any other GTK installations.
> 
> Attached to this mail is a ZIP with the following files (all output generated
> with env variable PANGO_WIN32_DEBUG=true set):
> 
>     * failed-stderr.txt / failed-stdout.txt - Output of the program on the
>       host, rendering boxes instead of characters
>     * vm-success.txt - Output of the program in the VM, rendering fonts correctly
> 
> 
> Related thread (which didn't solve the problem for me):
> http://lists.cairographics.org/archives/cairo/2010-January/018918.html
> This problem is related to my program Site Deploy
> <https://launchpad.net/site-deploy>, which is PyGTK-powered (and I don't want
> to switch to Qt because of this...).
> 
> Best regards
> 
> 
> 
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