Hello,
I need to show some images inside my GTK+ 2.32 application so I decided to
embed them using GResource compiler.
I’ve prepared an XML file like this:
<?xml version="1.0" encoding="UTF-8"?>
<gresources>
<gresource prefix="/myapp/icons">
<file preprocess="to-pixdata">logo.png</file>
<…..>
</gresource>
</gresources>
And after “glib-compile-resources.exe --target=icons.c --generate icons.xml”, I
correctly have a .c file with images encoded inside.
Problem here: i need that images to be shown in About dialog
(gtk_show_about_dialog) and buttons (gtk_button_set_image). As far as I know,
to accomplish this I have to create GdkPixbuf (for gtk_about_dialog_set_logo)
and GtkWidget (for gtk_button_set_image). I tried with this code but got some
issues (see the comments):
-----------
GResource* icons = icons_get_resource();
GBytes* data = g_resource_lookup_data(icons, path,
G_RESOURCE_LOOKUP_FLAGS_NONE, NULL);
gsite size = g_bytes_get_size(data); // <-- this works since I have no
errors and the size is > 0, so I expect data to be ok
// now I need to create a GdkPixbuf, is that the correct way?
GError* e = NULL;
GdkPixbuf* pixbuf;
pixbuf = gdk_pixbuf_new_from_inline(g_bytes_get_size(data), data, FALSE,
&e);
// error here! Message is “Image header corrupt”
// if worked… I’d continue by also getting the GtkWidget image with:
GtkWidget* image;
image = gtk_image_new_from_pixbuf(pixbuf);
-----------
I can’t really understand how Pixbuf expects from the GResource data… also i
read in the docs that “gdk_pixbuf_new_from_inline has been deprecated since
version 2.32 and should not be used in newly-written code. Use GResource
instead.”… so what’s the correct way to create Pixbuf for About boxes and
GdkWidgets for image button?
Thanks for the support
Alessandro
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