set_filename
Description:
Makes this load and display the given filename.
This is a utility function that calls [method@Gtk.Picture.set_file].
::: warning Note that this function should not be used with untrusted data. Use a proper image loading framework such as libglycin, which can load many image formats into a `GdkTexture`, and then use [method@Gtk.Image.set_from_paintable].
Parameters:
| this |
a `GtkPicture` |
| filename |
the filename to play |