NULL is returned, then
error will be set. Possible errors are in the GDK_PIXBUF_ERROR and
G_FILE_ERROR domains.gdkPixbufNewFromFileAtSize(filename, width, height, .errwarn = TRUE)filenamewidthheightGdkPixbuf] A newly-created pixbuf with a reference count of 1, or
NULL if any of several error conditions occurred: the file could not
be opened, there was no loader for the file's format, there was not
enough memory to allocate the image buffer, or the image file contained
invalid data.errorwidth x height, if the aspect ratio requires it. To load
and image at the requested size, regardless of aspect ratio, use
gdkPixbufNewFromFileAtScale.
Since 2.4