gtkD load images

[Johnson Jones via Digitalmars-d-learn]

On Thursday, 3 August 2017 at 13:12:03 UTC, Mengu wrote:
> On Thursday, 3 August 2017 at 03:59:40 UTC, Johnson Jones wrote:
>> How can be use gtkD to load images, I assume through 
>> gdkpixbuf? While I am getting errors loading images through 
>> glade's image:
>>
>> (test.exe:8188): Gtk-WARNING **: Could not load 
>> image 'a.jpg': Couldn't recognize the image file format for 
>> file 'test\a.jpg'
>>
>> (loads fine in glade)
>>
>> which needs to be resolved, I'd also like to be able to use 
>> gdkpixbuf to load images programmatically. There seems to be 
>> no demos on the gtkD github page that deals with image loading.
>>
>> I've tried to do something like
>>
>> import gtkc.gdkpixbuf;
>> auto x = c_gdk_pixbuf_get_formats().data;
>>
>> but I don't know how to interpret x.
>>
>> Also something like
>>
>> 		import gtkc.gdkpixbuf;
>> 		void* x;
>> 		auto p = c_gdk_pixbuf_get_formats();
>> 		for(int i = 0; i < 10; i++)
>> 		{			
>> 			x = p.data;
>> 			p = p.next;
>> 		}
>>
>> which doesn't offer any help.
>>
>>
>> Aside: How can we call the gtk functions directly using gtkD? 
>> Seems it uses stuff like
>>
>> Linker.link(gdk_pixbuf_get_formats, "gdk_pixbuf_get_formats", 
>> LIBRARY_GDKPIXBUF);
>>
>> It does seem to alias to these function but something is off 
>> and I'm not sure what.
>
> hi
>
> - is the gtk.Image class not working for you? 
> https://api.gtkd.org/gtkd/gtk/Image.html
>
> - there's also a gdkpixbuf.Pixbuf that you can use. 
> https://api.gtkd.org/gtkd/gdkpixbuf/Pixbuf.html
>
> - you can import those functions from gdkpixbuf.c.functions.

So, like I said, I've tried

import gdkpixbuf.Pixbuf;
auto x = Pixbuf.newFromResource("C:\\a.jpg");

which gives me that error I stated before for x86. For x64 it 
simply crashes and no exception is given.

If I use a dummy image I get the same error:

"Unhandled exception: glib.GException.GException The resource at 
“C:\adf.jpg” does not exist at 
generated\gtkd\glib\GException.d(40)"

The error message makes look like like it should be


"Unhandled exception: glib.GException.GException The resource at 
“C:\adf.jpg” does not exist at “C:\” 
generated\gtkd\glib\GException.d(40)"


I'd rather use Pixbuf than image because I don't need to generate 
a full blow image widget.

If I do

GError* err = null;
auto p = gdk_pixbuf_new_from_resource(Str.toStringz("C:\\a.jpg"), 
&err);

p is null and err is

The resource at “D:\a.jpgâ€. does not exist.

which is clearly not true.

So not sure what is going on ;/ Seems to be a bug in pixbuf or am 
I specifying the path wrong? If gtk.Image uses these internally 
then it is working so...