Re: g_type_query in gtk-win32

[Tor Lillqvist <tml iki fi>]

> I am, because I get a runtime error if I don;t use
> that flag - even though I'm not linking to any Microsoft libraries.  Is that
> normal?

The run-time error is intentional, to make sure that you did use the
switch. Whether you link to Microsoft libraries or not is not relevant
here. What's relevant is that as the switch has been used when
compiling GTK+ itself, it must also be used when compiling GTK+-using
code so that it uses the same alignment rules for struct bitfields.

The reason why the switch is used when compiling GTK+ itself is so
that the produced binaries are usable from code compiled with
Microsoft's compiler. (Which always uses the alignment rules that gcc
needs the switch for. Why that switch isn't the default for mingw I
don't know, but of course this can't be changed any more now.)

> libgnomecanvas-2 isn't listed and
> I think I might have an old (incompatible) one still present.  Should
> libgnomecanvas-2 have been installed by one of the other packages or do I
> need to obtain it from somewhere else?

The latest one is 2.20.1-1 available at
http://ftp.gnome.org/pub/GNOME/binaries/win32/libgnomecanvas/2.20/ .
It's always a good idea to check the GNOME ftp site for Win32
binaries. The download page might not always be completely up-to-date.

When I run your test program with a PATH that makes it use the latest
Win32 DLLs for the GNOME stack, their full paths are as in the
following gdb printout. The pathnames contain the package versions.
(This is just a convention I use to keep unpacked copies of the zip
files, not some convention I would recommend others to follow)

(gdb) i dll
> From        To          Syms Read   Shared Object Library
...
0x63a41000  0x63a7b550  Yes
c:\devel\dist\win32\glib-2.18.4-1\bin\libgobject-2.0-0.dll
0x685c1000  0x6869ad84  Yes
c:\devel\dist\win32\glib-2.18.4-1\bin\libglib-2.0-0.dll
...
0x61781000  0x61b3779c  Yes
c:\devel\dist\win32\gtk+-2.14.7-1\bin\libgtk-win32-2.0-0.dll
0x65341000  0x6535ba7c  Yes
c:\devel\dist\win32\gtk+-2.14.7-1\bin\libgdk_pixbuf-2.0-0.dll
0x6d581000  0x6d5cd974  Yes
c:\devel\dist\win32\glib-2.18.4-1\bin\libgio-2.0-0.dll
0x6dd01000  0x6dd0921c  Yes
c:\devel\dist\win32\glib-2.18.4-1\bin\libgmodule-2.0-0.dll
0x6c341000  0x6c3e2924  Yes
c:\devel\dist\win32\gtk+-2.14.7-1\bin\libgdk-win32-2.0-0.dll
0x68dc1000  0x68e6347c  Yes
c:\devel\dist\win32\cairo-1.8.6-1\bin\libcairo-2.dll
0x69c81000  0x69cad9d4  Yes
c:\devel\dist\win32\libpng-1.2.34-1\bin\libpng12-0.dll
0x10001000  0x1001134c  Yes         c:\devel\dist\win32\zlib-1.2.3\bin\zlib1.dll
...
0x65581000  0x655bf850  Yes
c:\devel\dist\win32\pango-1.22.4-1\bin\libpango-1.0-0.dll
0x6d4c1000  0x6d4cd410  Yes
c:\devel\dist\win32\pango-1.22.4-1\bin\libpangocairo-1.0-0.dll
0x6b281000  0x6b2927c0  Yes
c:\devel\dist\win32\pango-1.22.4-1\bin\libpangowin32-1.0-0.dll
...
0x62941000  0x6295cea8  Yes
c:\devel\dist\win32\atk-1.24.0-1\bin\libatk-1.0-0.dll
...
0x63f41000  0x63f6e750  Yes
c:\devel\dist\win32\libgnomecanvas-2.20.1\bin\libgnomecanvas-2-0.dll
0x6a181000  0x6a18b254  Yes
c:\devel\dist\win32\gtk+-2.14.7-1\bin\libgailutil-18.dll
0x655c1000  0x655d7358  Yes
c:\devel\dist\win32\libart-lgpl-2.3.20\bin\libart_lgpl_2-2.dll
0x6d701000  0x6d734b80  Yes
c:\devel\dist\win32\pango-1.22.4-1\bin\libpangoft2-1.0-0.dll
0x64f81000  0x64faffa4  Yes
c:\devel\dist\win32\fontconfig-2.6.0-2\bin\libfontconfig-1.dll
0x68f41000  0x68f62064  Yes
c:\devel\dist\win32\expat-2.0.1-1\bin\libexpat-1.dll
0x67cc1000  0x67d33590  Yes
c:\devel\dist\win32\freetype-2.3.8-1\bin\freetype6.dll
0x69001000  0x69016d8c  Yes
c:\devel\dist\win32\gettext-runtime-0.17-1\bin\intl.dll
...

--tml