On Tue, Jun 22, 2010 at 11:44:44AM -0400, Ryan Speller wrote:
> I've been trying to use the libraries provided (in C++) to write a
> program that loads one of the supported file types, and then exports
> to another format. I'm currently using Microsoft Visual Studio 2010 on
> a 64-bit Vista machine. I've run in to some difficulty lately I've
> been unable to resolve as yet - it seems that gwy_file_load fails,
> throwing the error " Cannot load `sample.mi': No module can load this
> file type." This failure persists for any file type I try, supported
> or not.
Please post a complete compilable source, if possible.
The initialisation part looks OK, however, since it seems like no module
is actually loaded the problem might be that the libs fail to find the
module directory when run from something else than Gwyddion. You can
easily see what modules are loaded by doing e.g.
gwy_module_foreach((GHFunc)&print_module, NULL);
with
static void
print_module(const gchar *name)
{
cout << name << endl;
}
> gchar *mpath = gwy_find_self_dir("");
> gchar *importfilenamefull = g_build_filename(mpath, "\\" , filename, NULL);
> gchar *exportfilenamefull = g_build_filename(mpath, "\\" , filename,
> ".", extension, NULL);
> gchar *gfilename =
> g_filename_from_utf8(gwy_canonicalize_path(importfilenamefull), -1,
> NULL, NULL, &err);
I don't understand why you start with gwy_find_self_dir(), is the file
in directory where Gwyddion was installed? Just use normal absolute
path.
> /* Detect File Type -- Crashes! */
> //std::cout << gwy_file_detect(gfilename, TRUE,
> GWY_FILE_OPERATION_LOAD) << std::endl;
Does it really crash in gwy_file_detect()? Because if you get ‘No
module can load this file type.’ you almost surely also get NULL
returned from gwy_file_detect() and then it crashes when trying to print
the NULL pointer as string.
Please always use gwy_file_detect() with only_name=FALSE for loading of
existing files. The detection function unfortunately allows
combinations of arguments that do not make much sense.
> is uncommented, nomatter what filename I put in there - the debugger
> shows this occurs on the following line in the stack:
>
> main_loop:
> mov eax,dword ptr [ecx] ; read 4 bytes
Is this a full stack trace? There does not seem to be any function
named main_loop in Gwyddion, Gtk+ or GLib so I don't know how it got
there.
Regards,
Yeti
------------------------------------------------------------------------------
ThinkGeek and WIRED's GeekDad team up for the Ultimate
GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the
lucky parental unit. See the prize list and enter to win:
http://p.sf.net/sfu/thinkgeek-promo
_______________________________________________
Gwyddion-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/gwyddion-users
